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NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track32.950.0.0.0.32.95
road and skidding road13.2100.0.0.0.13.210
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4370.0.0.0.1.437
total47.520.0.0.0.47.52
AIroad and skidding track1.7310.0.1.8283.517
road and skidding road0.0.0.0.0.21000.2100
road and cable line0.21000.4720.0.0.657
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6570.21000.21001.041
total2.5240.6572.2245.310
ARroad and skidding track3.3210.0.1.6324.915
road and skidding road1.1400.0.1.0382.127
road and cable line0.3710.21000.21000.648
road and flight path0.5670.0.0.0.0.567
no access intended0.0.0.0.0.0.0.0.
total5.3130.21002.7228.16
BEroad and skidding track51.452.42924.3878.14
road and skidding road17.3100.210015.41132.97
road and cable line10.6137.31619.81037.77
road and flight path4.2221.0452.4297.616
no access intended5.9182.2304.62112.712
total89.3413.11266.54168.91
BL/BSroad and skidding track10.9100.0.2.52913.48
road and skidding road4.5200.0.0.6565.119
road and cable line0.7580.0.0.9501.637
road and flight path0.0.0.0.0.0.0.0.
no access intended0.31000.0.0.21000.572
total16.360.0.4.12120.43
FRroad and skidding track15.790.0.3.32419.08
road and skidding road5.9180.4713.7229.913
road and cable line3.4230.5575.5179.512
road and flight path0.9490.21000.4731.538
no access intended1.1450.0.0.4711.438
total27.051.04013.41041.43
GEroad and skidding track2.7190.0.0.0.2.719
road and skidding road1.0570.0.0.0.1.057
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.750.0.0.0.3.75
GLroad and skidding track1.3370.0.0.6581.931
road and skidding road0.21000.0.0.4710.658
road and cable line1.5351.9302.2295.616
road and flight path1.0441.0440.5572.527
no access intended1.9311.1401.5354.618
total6.0164.0205.21715.26
GRroad and skidding track14.6112.3299.21426.18
road and skidding road6.6171.2415.71813.512
road and cable line24.1914.11142.9681.24
road and flight path6.0182.3296.21814.511
no access intended18.5102.72714.91136.27
total69.8522.7979.04171.52
JUroad and skidding track11.9110.4713.72216.08
road and skidding road8.4130.21005.61714.29
road and cable line0.0.0.0.0.4700.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.4710.8502.726
total21.960.94310.51133.43
LUroad and skidding track17.980.0.3.42321.37
road and skidding road9.3130.0.1.53710.812
road and cable line4.7190.6581.7337.115
road and flight path0.21000.0.0.0.0.2100
no access intended0.6570.0.0.4711.044
total32.840.6587.01640.42
NEroad and skidding track15.290.9501.43517.57
road and skidding road7.8140.21001.1419.013
road and cable line0.4700.0.0.21000.558
road and flight path0.21000.0.0.0.0.2100
no access intended0.6590.0.0.21000.851
total24.151.0442.82428.03
NWroad and skidding track0.6590.31000.6581.536
road and skidding road0.4720.21000.21000.848
road and cable line1.8330.4721.8334.119
road and flight path1.3420.31000.31001.934
no access intended0.0.0.0.0.0.0.0.
total4.3181.2442.8248.27
OWroad and skidding track0.8450.0.0.21001.041
road and skidding road1.4350.21001.6343.223
road and cable line4.4200.8453.2238.512
road and flight path2.8240.6592.3285.716
no access intended0.4710.0.0.21000.658
total9.9111.7337.51319.04
SGroad and skidding track13.0111.14410.01324.17
road and skidding road3.9231.0455.31810.213
road and cable line1.6351.3418.41511.312
road and flight path1.4380.5710.4722.330
no access intended2.4290.5702.3305.219
total22.484.42126.5753.33
SHroad and skidding track10.660.0.0.46911.05
road and skidding road1.3390.0.0.0.1.339
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOroad and skidding track21.060.0.1.43822.46
road and skidding road6.7150.0.1.1457.814
road and cable line0.6590.0.0.4721.045
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7570.21000.0.0.950
total29.030.21002.92632.12
SZroad and skidding track4.2210.0.1.3405.418
road and skidding road1.6350.0.1.8333.523
road and cable line5.4171.2416.91513.49
road and flight path2.5280.4710.9443.822
no access intended1.6350.0.0.8492.428
total15.391.63511.71128.54
TGroad and skidding track15.360.0.1.43516.85
road and skidding road2.2280.0.0.8453.024
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.11000.0.0.21000.473
total17.740.0.2.42620.12
TIroad and skidding track5.4190.6588.01513.911
road and skidding road0.8500.8503.5245.120
road and cable line1.8331.33715.51118.610
road and flight path0.8501.8335.5198.115
no access intended16.9105.01953.6575.54
total25.689.51486.23121.32
URroad and skidding track1.2400.0.0.6581.832
road and skidding road0.4710.21000.8501.437
road and cable line0.21001.9291.8323.919
road and flight path1.9310.8491.7334.519
no access intended3.2240.7500.4714.320
total6.8153.7215.31615.86
VDroad and skidding track49.451.8335.61856.94
road and skidding road16.5100.0.1.73318.29
road and cable line2.4292.6284.6209.614
road and flight path1.0450.0.0.8501.833
no access intended5.4190.8502.9269.114
total74.735.21915.61095.62
VSroad and skidding track7.5162.32910.51320.39
road and skidding road2.2300.4713.6236.118
road and cable line7.31611.81218.21037.26
road and flight path7.2165.91811.01324.18
no access intended10.1143.32412.61226.18
total34.3723.7855.84113.82
ZGroad and skidding track1.1390.0.0.8411.926
road and skidding road2.0270.0.0.5672.422
road and cable line0.21000.21001.0361.431
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.3170.21002.3225.76
ZHroad and skidding track37.240.0.0.47137.64
road and skidding road7.3160.0.0.4727.715
road and cable line2.7270.0.0.8503.523
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total47.820.0.1.63549.42
Switzerlandroad and skidding track347.0212.01392.94451.92
road and skidding road121.844.92056.36183.13
road and cable line74.4546.56136.53257.32
road and flight path32.0814.81232.5879.45
no access intended73.9517.21196.24187.43
total649.2195.44414.521159.11
© WSL, Swiss National Forest Inventory, 18.06.2020 #862394/328725
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track33.440.0.0.0.33.44
road and skidding road12.6100.0.0.0.12.610
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4350.0.0.0.1.435
total47.520.0.0.0.47.52
AIroad and skidding track1.6300.0.1.9243.516
road and skidding road0.11000.0.0.3720.458
road and cable line0.21000.3720.0.0.557
road and flight path0.0.0.0.0.0.0.0.
no access intended0.5570.3690.21001.037
total2.4230.6482.4205.48
ARroad and skidding track3.4200.0.1.4324.815
road and skidding road1.2360.0.0.9382.126
road and cable line0.4570.4720.11000.940
road and flight path0.4680.0.0.0.0.468
no access intended0.0.0.0.0.0.0.0.
total5.5120.4722.4228.36
BEroad and skidding track50.252.32824.3876.74
road and skidding road16.7100.55816.61033.97
road and cable line10.2138.21421.2939.66
road and flight path4.2200.9452.4277.515
no access intended6.5162.1294.71913.411
total87.8314.01169.34171.11
BL/BSroad and skidding track10.8100.0.2.62713.58
road and skidding road4.6190.0.0.5565.118
road and cable line0.7590.0.0.8501.438
road and flight path0.0.0.0.0.0.0.0.
no access intended0.31000.0.0.21000.472
total16.460.0.4.12020.53
FRroad and skidding track15.090.0.3.32218.47
road and skidding road5.8160.3714.22010.312
road and cable line3.5210.5575.7169.711
road and flight path0.8490.3700.6581.733
no access intended1.1410.0.0.3711.435
total26.251.13614.1941.42
GEroad and skidding track2.8170.0.0.0.2.817
road and skidding road0.9570.0.0.0.0.957
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.750.0.0.0.3.75
GLroad and skidding track1.6330.0.0.7502.227
road and skidding road0.21000.0.0.3710.558
road and cable line2.1271.6312.2276.015
road and flight path1.0410.9450.5572.426
no access intended1.8301.3351.5334.617
total6.8143.8195.11615.76
GRroad and skidding track15.0112.32810.21327.48
road and skidding road7.2151.1416.21714.511
road and cable line24.1815.21041.4680.74
road and flight path6.1172.4276.21714.811
no access intended19.992.62615.01037.66
total72.2423.6879.14175.01
JUroad and skidding track12.3100.3723.62116.28
road and skidding road8.4130.11005.31713.99
road and cable line0.0.0.0.0.5570.557
road and flight path0.0.0.0.0.0.0.0.
no access intended1.8310.3710.7502.824
total22.560.84310.11133.42
LUroad and skidding track18.580.0.3.22221.77
road and skidding road9.5120.0.1.23710.711
road and cable line4.6170.5571.7316.814
road and flight path0.4700.0.0.0.0.470
no access intended0.9440.0.0.3711.237
total33.840.5576.51540.82
NEroad and skidding track15.080.7501.73117.47
road and skidding road8.1130.21001.2379.512
road and cable line0.3700.0.0.21000.557
road and flight path0.21000.0.0.0.0.2100
no access intended0.9450.21000.21001.337
total24.541.1403.22228.83
NWroad and skidding track0.6590.21000.6581.436
road and skidding road0.4720.21000.21000.748
road and cable line1.5340.8502.0304.316
road and flight path1.3380.21000.21001.832
no access intended0.0.0.21000.0.0.2100
total3.8181.6332.9228.36
OWroad and skidding track1.0410.0.0.21001.138
road and skidding road1.7310.21001.5343.422
road and cable line4.3190.8453.5218.611
road and flight path3.0230.5592.4276.015
no access intended0.4710.0.0.21000.658
total10.3111.5337.81219.64
SGroad and skidding track13.0111.14110.51224.77
road and skidding road4.3200.9455.71610.912
road and cable line1.8311.1418.61311.611
road and flight path1.3380.4710.4712.030
no access intended2.5270.4702.7265.717
total23.084.02128.0654.93
SHroad and skidding track10.660.0.0.55711.15
road and skidding road1.1390.0.0.0.1.139
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total11.740.0.0.55712.23
SOroad and skidding track20.660.0.1.43622.06
road and skidding road6.5150.0.1.1417.613
road and cable line0.9450.0.0.6581.535
road and flight path0.0.0.0.0.0.0.0.
no access intended1.2400.21000.0.1.437
total29.230.21003.12432.42
SZroad and skidding track4.3190.0.2.2276.515
road and skidding road2.0300.0.1.6333.622
road and cable line5.0171.0406.71412.79
road and flight path2.4270.4710.8443.622
no access intended1.4350.0.0.9442.327
total15.191.43512.21028.73
TGroad and skidding track15.660.0.1.43217.05
road and skidding road2.0280.0.0.7442.723
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.11000.0.0.4700.558
total17.740.0.2.52320.23
TIroad and skidding track5.0190.5587.61513.111
road and skidding road0.9450.7503.7225.318
road and cable line1.6331.23715.51018.39
road and flight path1.1411.8325.8178.614
no access intended17.1105.91754.7577.73
total25.6810.11387.33123.02
URroad and skidding track1.1390.0.0.7501.830
road and skidding road0.3710.21000.7501.337
road and cable line0.5581.9271.7324.118
road and flight path2.1281.1401.8315.017
no access intended3.2220.9450.3714.419
total7.3134.1195.21616.65
VDroad and skidding track49.851.8315.91757.54
road and skidding road17.290.0.1.93019.19
road and cable line2.5272.5264.5199.513
road and flight path1.1410.0.0.7501.832
no access intended5.7170.9453.2249.813
total76.335.21816.21097.82
VSroad and skidding track8.1142.52610.61221.18
road and skidding road2.1290.3713.3235.817
road and cable line7.31511.61217.3936.26
road and flight path7.9155.81710.91224.68
no access intended11.3123.72111.91226.97
total36.8623.9854.04114.72
ZGroad and skidding track1.0390.0.0.8411.826
road and skidding road2.0250.0.0.4682.421
road and cable line0.4680.21001.2321.726
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.4150.21002.4206.05
ZHroad and skidding track37.240.0.0.47137.64
road and skidding road6.8150.0.0.4717.215
road and cable line2.8250.0.0.8503.622
road and flight path0.0.0.0.0.0.0.0.
no access intended0.5580.0.0.0.0.558
total47.420.0.1.53548.92
Switzerlandroad and skidding track347.5211.81295.84455.11
road and skidding road122.644.71958.05185.33
road and cable line74.8547.86136.13258.72
road and flight path33.2714.81132.7780.64
no access intended78.7519.0997.54195.13
total656.8198.14420.021174.90
© WSL, Swiss National Forest Inventory, 18.06.2020 #862395/328726
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track32.950.0.0.0.32.95
road and skidding road13.2100.0.0.0.13.210
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.0.0.0.1.635
total47.720.0.0.0.47.72
AIroad and skidding track1.7310.0.1.8283.517
road and skidding road0.0.0.0.0.21000.2100
road and cable line0.21000.4720.0.0.657
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6570.21000.21001.041
total2.5240.6572.2245.310
ARroad and skidding track3.3210.0.1.6324.915
road and skidding road1.1400.0.1.0382.127
road and cable line0.3710.21000.21000.648
road and flight path0.5670.0.0.0.0.567
no access intended0.0.0.0.0.0.0.0.
total5.3130.21002.7228.16
BEroad and skidding track52.252.42924.9879.54
road and skidding road17.5100.47115.81133.77
road and cable line10.6137.31620.2938.16
road and flight path4.6211.0452.4298.015
no access intended6.3182.2304.62113.112
total91.1413.31267.94172.31
BL/BSroad and skidding track10.9100.0.2.52913.48
road and skidding road4.5200.0.0.6565.119
road and cable line0.7580.0.0.9501.637
road and flight path0.0.0.0.0.0.0.0.
no access intended0.31000.0.0.21000.572
total16.360.0.4.12120.43
FRroad and skidding track15.790.0.3.32419.08
road and skidding road6.1170.4713.72210.113
road and cable line3.4230.5575.7179.612
road and flight path0.9490.21000.4731.538
no access intended1.1450.0.0.4711.438
total27.251.04013.51041.72
GEroad and skidding track2.7190.0.0.0.2.719
road and skidding road1.0570.0.0.0.1.057
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.750.0.0.0.3.75
GLroad and skidding track1.6350.0.0.6582.129
road and skidding road0.21000.0.0.4710.658
road and cable line1.5351.9302.2295.616
road and flight path1.0441.0440.5572.527
no access intended1.9311.1401.5354.618
total6.2164.0205.21715.46
GRroad and skidding track15.2112.3299.41426.98
road and skidding road6.6171.2416.11813.912
road and cable line24.5914.51142.9682.04
road and flight path6.2182.5286.21814.911
no access intended19.9102.72715.51138.27
total72.4423.3980.14175.82
JUroad and skidding track12.1110.4713.72216.28
road and skidding road8.4130.21005.61714.29
road and cable line0.0.0.0.0.4700.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.4710.8502.726
total22.160.94310.51133.52
LUroad and skidding track18.580.0.3.42321.97
road and skidding road9.5130.0.1.53711.012
road and cable line4.7190.6581.7337.115
road and flight path0.21000.0.0.0.0.2100
no access intended0.6570.0.0.4711.044
total33.540.6587.01641.22
NEroad and skidding track15.480.9501.63317.87
road and skidding road7.8140.21001.1419.013
road and cable line0.4700.0.0.21000.558
road and flight path0.21000.0.0.0.0.2100
no access intended0.8510.0.0.21001.045
total24.551.0443.02328.63
NWroad and skidding track0.6590.31000.6581.536
road and skidding road0.4720.21000.21000.848
road and cable line1.8330.4721.8334.119
road and flight path1.3420.31000.31001.934
no access intended0.0.0.0.0.0.0.0.
total4.3181.2442.8248.27
OWroad and skidding track0.8450.0.0.21001.041
road and skidding road1.4350.21001.6343.223
road and cable line4.4200.8453.2238.512
road and flight path2.8240.6592.3285.716
no access intended0.4710.0.0.21000.658
total9.9111.7337.51319.04
SGroad and skidding track13.0111.14410.21224.37
road and skidding road4.3211.0456.11711.512
road and cable line1.6351.3418.41511.312
road and flight path1.4380.5710.4722.330
no access intended2.4290.5702.5295.419
total22.884.42127.7654.83
SHroad and skidding track10.660.0.0.46911.05
road and skidding road1.3390.0.0.0.1.339
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOroad and skidding track21.260.0.1.63622.86
road and skidding road6.7150.0.1.1457.814
road and cable line0.6590.0.0.4721.045
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7570.21000.0.0.950
total29.230.21003.12532.52
SZroad and skidding track4.2210.0.1.3405.418
road and skidding road2.0310.0.1.8333.922
road and cable line5.4171.2416.91513.49
road and flight path2.5280.4710.9443.822
no access intended1.6350.0.0.8492.428
total15.791.63511.71129.04
TGroad and skidding track15.760.0.1.43517.15
road and skidding road2.2280.0.0.8453.024
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.11000.0.0.21000.473
total18.140.0.2.42620.53
TIroad and skidding track5.6190.6588.01514.111
road and skidding road0.8500.8503.7235.319
road and cable line1.8331.33715.71118.810
road and flight path0.8501.8335.7198.315
no access intended17.2105.21954.4576.94
total26.289.71487.53123.42
URroad and skidding track1.2400.0.0.6581.832
road and skidding road0.4710.21000.8501.437
road and cable line0.21001.9291.8323.919
road and flight path1.9310.8491.7334.519
no access intended3.6220.7500.4714.719
total7.3143.7215.31616.35
VDroad and skidding track50.451.8335.81858.04
road and skidding road16.7100.0.1.93118.69
road and cable line2.4292.6284.6209.614
road and flight path1.2410.0.0.8502.032
no access intended6.0180.8502.9269.714
total76.835.21916.01097.92
VSroad and skidding track7.7162.32910.51320.59
road and skidding road2.2300.4713.6236.118
road and cable line7.31611.81218.21037.26
road and flight path7.8165.91811.01324.78
no access intended10.3143.32412.61226.28
total35.3723.7855.84114.82
ZGroad and skidding track1.1390.0.0.8411.926
road and skidding road2.0270.0.0.5672.422
road and cable line0.21000.21001.2321.628
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.3170.21002.5205.95
ZHroad and skidding track37.240.0.0.47137.64
road and skidding road7.3160.0.0.4727.715
road and cable line2.7270.0.0.8503.523
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total47.820.0.1.63549.42
Switzerlandroad and skidding track351.5212.01394.54458.02
road and skidding road123.545.12058.36186.93
road and cable line74.8546.86137.43259.02
road and flight path33.4815.01132.7881.15
no access intended77.7517.51197.84192.93
total660.9196.44420.721178.01
© WSL, Swiss National Forest Inventory, 18.06.2020 #862396/328727
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track32.950.0.0.0.32.95
road and skidding road13.2100.0.0.0.13.210
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4370.0.0.0.1.437
total47.520.0.0.0.47.52
AIroad and skidding track1.7310.0.1.8283.517
road and skidding road0.0.0.0.0.21000.2100
road and cable line0.21000.4720.0.0.657
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6570.21000.21001.041
total2.5240.6572.2245.310
ARroad and skidding track3.3210.0.1.6324.915
road and skidding road1.1400.0.1.0382.127
road and cable line0.3710.21000.21000.648
road and flight path0.5670.0.0.0.0.567
no access intended0.0.0.0.0.0.0.0.
total5.3130.21002.7228.16
BEroad and skidding track51.452.42924.3878.14
road and skidding road17.3100.210015.41132.97
road and cable line10.6137.31619.81037.77
road and flight path6.0181.0452.4299.414
no access intended8.1162.2304.62114.911
total93.4413.11266.54172.91
BL/BSroad and skidding track10.9100.0.2.52913.48
road and skidding road4.5200.0.0.6565.119
road and cable line0.7580.0.0.9501.637
road and flight path0.0.0.0.0.0.0.0.
no access intended0.31000.0.0.21000.572
total16.360.0.4.12120.43
FRroad and skidding track15.790.0.3.32419.08
road and skidding road5.9180.4713.7229.913
road and cable line3.4230.5575.5179.512
road and flight path0.9490.21000.4731.538
no access intended1.1450.0.0.6581.636
total27.051.04013.61041.63
GEroad and skidding track2.7190.0.0.0.2.719
road and skidding road1.0570.0.0.0.1.057
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.750.0.0.0.3.75
GLroad and skidding track1.3370.0.0.6581.931
road and skidding road0.21000.0.0.4710.658
road and cable line1.9311.9302.2296.015
road and flight path1.6351.0440.5573.124
no access intended4.2201.1401.5356.915
total9.3124.0205.21718.55
GRroad and skidding track14.8112.3299.41426.58
road and skidding road6.6171.2415.91813.712
road and cable line26.2814.11143.2683.44
road and flight path8.6152.3296.21817.111
no access intended35.073.32416.31154.76
total91.1423.3980.94195.42
JUroad and skidding track11.9110.4713.72216.08
road and skidding road8.4130.21005.61714.29
road and cable line0.0.0.0.0.4700.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.4710.8502.726
total21.960.94310.51133.43
LUroad and skidding track18.180.0.3.42321.57
road and skidding road9.3130.0.1.53710.812
road and cable line4.7190.6581.7337.115
road and flight path0.21000.0.0.0.0.2100
no access intended0.8490.0.0.4711.241
total33.140.6587.01640.82
NEroad and skidding track15.290.9501.43517.57
road and skidding road7.8140.21001.1419.013
road and cable line0.4700.0.0.21000.558
road and flight path0.21000.0.0.0.0.2100
no access intended0.6590.0.0.21000.851
total24.151.0442.82428.03
NWroad and skidding track0.6590.31000.6581.536
road and skidding road0.4720.21000.21000.848
road and cable line1.8330.4721.8334.119
road and flight path1.3420.31000.31001.934
no access intended0.0.0.0.0.0.0.0.
total4.3181.2442.8248.27
OWroad and skidding track0.8450.0.0.21001.041
road and skidding road1.4350.21001.6343.223
road and cable line4.4200.8453.2238.512
road and flight path2.8240.6592.3285.716
no access intended0.8500.0.0.21001.045
total10.3111.7337.51319.44
SGroad and skidding track13.0111.14410.01324.17
road and skidding road3.9231.0455.31810.213
road and cable line1.8331.3418.61411.712
road and flight path1.4380.5710.4722.330
no access intended4.2220.5702.3307.117
total24.484.42126.7755.53
SHroad and skidding track10.660.0.0.46911.05
road and skidding road1.3390.0.0.0.1.339
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOroad and skidding track21.060.0.1.43822.46
road and skidding road6.7150.0.1.1457.814
road and cable line0.6590.0.0.4721.045
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7570.21000.0.0.950
total29.030.21002.92632.12
SZroad and skidding track4.2210.0.1.3405.418
road and skidding road1.6350.0.1.8333.523
road and cable line5.4171.2416.91513.49
road and flight path2.5280.4710.9443.822
no access intended1.6350.0.0.8492.428
total15.391.63511.71128.54
TGroad and skidding track15.360.0.1.43516.85
road and skidding road2.2280.0.0.8453.024
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.11000.0.0.21000.473
total17.740.0.2.42620.12
TIroad and skidding track5.6190.6588.21514.311
road and skidding road0.8500.8503.9235.519
road and cable line1.8331.33715.51118.610
road and flight path1.0451.8335.9188.715
no access intended25.085.41958.7589.13
total34.179.91392.23136.22
URroad and skidding track1.2400.0.0.6581.832
road and skidding road0.4710.21000.8501.437
road and cable line0.3701.9291.8324.019
road and flight path2.5271.0442.1295.617
no access intended4.9190.9440.8506.616
total9.3134.0206.11519.56
VDroad and skidding track49.451.8335.61856.94
road and skidding road16.7100.0.1.73318.49
road and cable line2.4292.6284.6209.614
road and flight path1.0450.0.0.8501.833
no access intended6.2180.8502.9269.914
total75.835.21915.61096.62
VSroad and skidding track7.5162.32910.51320.39
road and skidding road2.4290.4713.6236.317
road and cable line7.71612.01218.21037.96
road and flight path8.8156.11811.01325.98
no access intended14.0123.52312.61230.17
total40.4624.3855.84120.62
ZGroad and skidding track1.1390.0.0.8411.926
road and skidding road2.0270.0.0.5672.422
road and cable line0.21000.21001.0361.431
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.3170.21002.3225.76
ZHroad and skidding track37.240.0.0.47137.64
road and skidding road7.3160.0.0.4727.715
road and cable line2.7270.0.0.8503.523
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total47.820.0.1.63549.42
Switzerlandroad and skidding track347.6212.01393.34452.92
road and skidding road122.344.92056.96184.13
road and cable line77.6546.76136.93261.22
road and flight path39.4715.21133.3887.85
no access intended111.9418.610103.34233.83
total698.8197.44423.721219.81
© WSL, Swiss National Forest Inventory, 18.06.2020 #862397/328728
NFI4
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: production region
unit: %
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectconcept of transportation system %± %± %± %± %± %±
n/aroad and skidding track57.11.776.41.326.91.916.41.21.40.743.30.8
road and skidding road30.51.613.91.118.11.75.80.814.32.116.20.6
road and cable line2.70.62.60.523.21.828.31.511.71.913.20.5
road and flight path0.10.10.10.17.41.133.21.526.52.711.80.5
no access intended9.51.07.00.824.41.816.31.246.13.015.60.6
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterroad and skidding track17.78.00.0.8.03.58.31.51.31.37.81.2
road and skidding road43.610.40.0.4.42.52.20.82.71.94.50.9
road and cable line21.68.60.0.54.06.251.22.732.55.547.62.2
road and flight path4.24.10.0.21.45.131.72.556.55.832.52.1
no access intended12.97.00.0.12.24.16.51.37.03.07.61.2
total100.0.0.0.100.0.100.0.100.0.100.0.
outside perimeterroad and skidding track26.93.545.34.923.51.914.31.21.70.515.30.7
road and skidding road48.53.928.64.518.41.75.00.79.01.213.30.7
road and cable line13.62.78.72.841.42.248.61.724.31.736.21.0
road and flight path1.20.83.01.74.80.923.81.449.22.023.70.9
no access intended9.82.314.53.511.91.58.30.915.91.511.50.7
total100.0.100.0.100.0.100.0.100.0.100.0.
totalroad and skidding track51.31.673.71.324.31.314.30.71.60.430.60.5
road and skidding road33.71.515.21.117.41.14.90.510.01.014.20.4
road and cable line4.90.73.10.533.21.440.21.021.31.324.00.5
road and flight path0.40.20.30.27.10.829.21.043.21.617.70.4
no access intended9.60.97.70.818.11.211.50.723.91.413.50.4
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862398/328729
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track32.950.0.0.0.32.95
road and skidding road13.2100.0.0.0.13.210
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.0.0.0.1.635
total47.720.0.0.0.47.72
AIroad and skidding track1.7310.0.1.8283.517
road and skidding road0.0.0.0.0.21000.2100
road and cable line0.21000.4720.0.0.657
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6570.21000.21001.041
total2.5240.6572.2245.310
ARroad and skidding track3.3210.0.1.6324.915
road and skidding road1.1400.0.1.0382.127
road and cable line0.3710.21000.21000.648
road and flight path0.5670.0.0.0.0.567
no access intended0.0.0.0.0.0.0.0.
total5.3130.21002.7228.16
BEroad and skidding track52.452.42925.3880.04
road and skidding road17.5100.47116.01133.97
road and cable line11.0137.31620.7938.96
road and flight path7.0171.0452.62810.613
no access intended11.5132.4294.82018.710
total99.4313.51269.34182.21
BL/BSroad and skidding track11.1100.0.2.52913.68
road and skidding road4.5200.0.0.6565.119
road and cable line0.7580.0.0.9501.637
road and flight path0.0.0.0.0.0.0.0.
no access intended0.31000.0.0.21000.572
total16.660.0.4.12120.73
FRroad and skidding track15.790.0.3.32419.08
road and skidding road6.1170.4713.72210.113
road and cable line3.7220.5575.7179.912
road and flight path0.9490.21000.4731.538
no access intended1.6350.0.0.6582.230
total28.051.04013.71042.82
GEroad and skidding track2.7190.0.0.0.2.719
road and skidding road1.0570.0.0.0.1.057
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.21000.0.0.0.0.2100
total3.970.0.0.0.3.97
GLroad and skidding track1.6350.0.0.6582.129
road and skidding road0.21000.0.0.4710.658
road and cable line2.3281.9302.8247.014
road and flight path1.8331.2400.5573.522
no access intended4.2201.1401.9317.314
total10.0124.2196.31520.54
GRroad and skidding track15.2112.5289.81427.58
road and skidding road6.6171.2416.11813.912
road and cable line26.9814.71143.9685.64
road and flight path9.2152.7276.21818.110
no access intended38.873.72319.01061.65
total96.7424.9885.04206.71
JUroad and skidding track12.1110.4713.72216.28
road and skidding road8.4130.21005.61714.29
road and cable line0.0.0.0.0.4700.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.4710.8502.726
total22.160.94310.51133.52
LUroad and skidding track18.780.0.3.42322.07
road and skidding road9.5130.0.1.53711.012
road and cable line4.9190.6581.9317.515
road and flight path0.4710.0.0.0.0.471
no access intended1.0440.0.0.4711.438
total34.540.6587.21542.42
NEroad and skidding track15.480.9501.63317.87
road and skidding road7.8140.21001.2379.213
road and cable line0.4700.0.0.21000.558
road and flight path0.21000.0.0.0.0.2100
no access intended0.8510.0.0.21001.045
total24.551.0443.22228.73
NWroad and skidding track0.6590.31000.6581.536
road and skidding road0.4720.21000.21000.848
road and cable line1.8330.4721.8334.119
road and flight path1.3420.31000.31001.934
no access intended0.21000.0.0.0.0.2100
total4.4171.2442.8248.46
OWroad and skidding track0.8450.0.0.4711.338
road and skidding road1.4350.21001.6343.223
road and cable line4.4200.8453.2238.512
road and flight path2.8240.8512.5276.115
no access intended0.8500.0.0.21001.045
total10.3111.9317.91220.03
SGroad and skidding track13.0111.14410.61224.77
road and skidding road4.3211.0456.31711.712
road and cable line2.0311.5389.31412.811
road and flight path1.4380.5710.4722.330
no access intended4.6210.5703.8238.915
total25.484.52130.5660.43
SHroad and skidding track10.660.0.0.46911.05
road and skidding road1.3390.0.0.0.1.339
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOroad and skidding track21.260.0.1.63622.86
road and skidding road6.7150.0.1.1457.814
road and cable line0.6590.0.0.4721.045
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7570.21000.0.0.950
total29.230.21003.12532.52
SZroad and skidding track4.2210.0.1.5375.618
road and skidding road2.0310.0.1.8333.922
road and cable line5.4171.5357.31514.29
road and flight path2.5280.6580.9444.022
no access intended2.0310.0.0.8492.826
total16.192.12912.31030.53
TGroad and skidding track15.760.0.1.43517.15
road and skidding road2.2280.0.0.8453.024
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.11000.0.0.21000.473
total18.140.0.2.42620.53
TIroad and skidding track6.0180.6588.31514.911
road and skidding road1.0450.8503.9235.719
road and cable line1.8331.33715.91119.010
road and flight path1.0451.8335.9188.715
no access intended33.275.61865.24104.13
total42.9610.11399.33152.41
URroad and skidding track1.2400.0.0.6581.832
road and skidding road0.4710.21000.8501.437
road and cable line0.3701.9291.8324.019
road and flight path2.8251.0442.2286.116
no access intended7.0160.9441.4389.313
total11.7114.0206.91422.65
VDroad and skidding track50.451.8335.81858.04
road and skidding road16.9100.0.1.93118.89
road and cable line2.4292.7264.6209.814
road and flight path1.2410.0.0.8502.032
no access intended7.8161.0453.32412.112
total78.835.51816.410100.71
VSroad and skidding track8.1152.32910.71321.19
road and skidding road2.4290.4713.6236.317
road and cable line7.71612.01218.21037.96
road and flight path9.8146.31711.81227.98
no access intended17.0104.12213.41234.57
total45.0625.1857.64127.72
ZGroad and skidding track1.1390.0.0.8411.926
road and skidding road2.0270.0.0.5672.422
road and cable line0.21000.21001.2321.628
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.3170.21002.5205.95
ZHroad and skidding track37.240.0.0.47137.64
road and skidding road7.3160.0.0.4727.715
road and cable line2.7270.0.0.8503.523
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total47.820.0.1.63549.42
Switzerlandroad and skidding track352.9212.21396.74461.82
road and skidding road124.145.12059.16188.33
road and cable line79.8548.06141.23269.02
road and flight path42.9716.41134.6793.94
no access intended136.4420.210116.44272.92
total736.11101.84448.021285.80
© WSL, Swiss National Forest Inventory, 18.06.2020 #862399/328730
NFI4
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track29.750.0.0.0.29.75
road and skidding road12.2110.0.0.0.12.211
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended5.4180.0.0.0.5.418
total47.520.0.0.0.47.52
AIroad and skidding track1.3340.0.1.5332.820
road and skidding road0.4700.21000.4721.044
road and cable line0.21000.21000.4720.848
road and flight path0.6570.21000.0.0.849
no access intended0.0.0.0.0.0.0.0.
total2.5240.6572.2245.310
ARroad and skidding track3.2220.0.1.9295.215
road and skidding road1.0440.0.0.3691.337
road and cable line1.1420.21000.5551.731
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total5.3130.21002.7228.16
BEroad and skidding track44.360.65814.11259.05
road and skidding road16.4111.04515.71133.27
road and cable line15.1117.81525.2848.16
road and flight path0.8502.3301.4384.521
no access intended12.7121.43810.21424.29
total89.3413.11266.54168.91
BL/BSroad and skidding track10.3110.0.1.83512.09
road and skidding road4.8190.0.1.1445.916
road and cable line0.5710.0.0.8501.341
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7560.0.0.4711.243
total16.360.0.4.12120.43
FRroad and skidding track16.980.0.3.22320.17
road and skidding road2.8260.0.2.2295.019
road and cable line3.0240.5576.3169.812
road and flight path0.4710.21000.0.0.658
no access intended3.8230.3701.7365.818
total27.051.04013.41041.43
GEroad and skidding track3.3130.0.0.0.3.313
road and skidding road0.0.0.0.0.0.0.0.
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.41000.0.0.0.0.4100
total3.750.0.0.0.3.75
GLroad and skidding track0.4710.21000.9471.635
road and skidding road0.0.0.0.0.0.0.0.
road and cable line3.6212.1292.6258.312
road and flight path1.1401.1390.8493.024
no access intended0.8500.6580.9442.328
total6.0164.0205.21715.26
GRroad and skidding track17.9103.32412.01233.27
road and skidding road5.2190.21004.5219.914
road and cable line25.5812.21245.1682.84
road and flight path18.3106.71715.21140.26
no access intended2.8270.4712.2305.419
total69.8522.7979.04171.52
JUroad and skidding track10.6120.21001.93112.710
road and skidding road9.6120.5567.61417.77
road and cable line0.21000.0.0.4710.657
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.21000.6582.428
total21.960.94310.51133.43
LUroad and skidding track11.1120.0.1.43712.511
road and skidding road6.1170.0.0.9506.916
road and cable line3.7230.21002.0315.917
road and flight path0.0.0.21000.4710.757
no access intended11.9110.21002.42814.510
total32.840.6587.01640.42
NEroad and skidding track13.690.21000.55814.39
road and skidding road8.8130.9502.02911.710
road and cable line0.4700.0.0.0.0.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4380.0.0.3711.733
total24.151.0442.82428.03
NWroad and skidding track0.0.0.31000.4720.759
road and skidding road0.4720.0.0.5681.047
road and cable line1.8350.4721.4353.621
road and flight path0.8560.31000.31001.342
no access intended1.2420.21000.21001.636
total4.3181.2442.8248.27
OWroad and skidding track0.7500.0.0.5591.337
road and skidding road0.7510.0.0.8491.534
road and cable line4.5191.0454.41910.010
road and flight path1.3380.7510.9492.825
no access intended2.6260.0.0.9443.521
total9.9111.7337.51319.04
SGroad and skidding track9.7130.7588.91319.38
road and skidding road5.3190.4714.1209.813
road and cable line3.0261.9339.61414.511
road and flight path4.3221.1453.7239.114
no access intended0.0.0.21000.21000.571
total22.484.42126.5753.33
SHroad and skidding track10.360.0.0.46910.76
road and skidding road1.2390.0.0.0.1.239
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended0.21000.0.0.0.0.2100
total11.940.0.0.46912.33
SOroad and skidding track18.070.0.0.94518.97
road and skidding road6.1160.0.1.2447.315
road and cable line2.0320.0.0.21002.230
road and flight path0.0.0.0.0.0.0.0.
no access intended2.9250.21000.6593.722
total29.030.21002.92632.12
SZroad and skidding track1.6350.0.0.8502.428
road and skidding road1.8330.0.1.6353.423
road and cable line3.6231.2407.01511.810
road and flight path0.6580.21000.21001.044
no access intended7.6150.21002.1319.913
total15.391.63511.71128.54
TGroad and skidding track14.670.0.1.23515.86
road and skidding road2.4280.0.0.8503.123
road and cable line0.21000.0.0.4730.658
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total17.740.0.2.42620.12
TIroad and skidding track0.6580.0.1.2411.833
road and skidding road6.4170.4708.01514.811
road and cable line3.3242.23018.91024.38
road and flight path9.4146.41748.7564.54
no access intended5.9180.6589.51415.911
total25.689.51486.23121.32
URroad and skidding track1.2390.0.0.8502.031
road and skidding road0.5570.0.0.21000.750
road and cable line1.3382.3272.8246.413
road and flight path1.8321.1400.8503.821
no access intended1.9310.21000.7492.924
total6.8153.7215.31615.86
VDroad and skidding track46.550.4702.72649.65
road and skidding road13.8110.4711.93116.110
road and cable line3.8232.9257.11613.811
road and flight path3.4241.5371.6356.517
no access intended7.3160.0.2.4299.614
total74.735.21915.61095.62
VSroad and skidding track6.8171.8337.01615.611
road and skidding road2.8270.4713.0266.218
road and cable line7.21611.51220.1938.86
road and flight path12.1138.21520.8941.06
no access intended5.5191.8334.92012.212
total34.3723.7855.84113.82
ZGroad and skidding track1.8280.0.0.7462.522
road and skidding road1.2360.0.0.5671.728
road and cable line0.21000.21001.1331.629
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.3170.21002.3225.76
ZHroad and skidding track37.240.0.0.65837.94
road and skidding road5.2190.0.0.4705.718
road and cable line4.3210.0.0.6584.820
road and flight path0.0.0.0.0.0.0.0.
no access intended1.0450.0.0.0.1.045
total47.820.0.1.63549.42
Switzerlandroad and skidding track311.727.61665.45384.72
road and skidding road115.244.42157.76177.33
road and cable line89.0546.96156.63292.52
road and flight path55.1630.0894.84179.83
no access intended78.256.51740.17124.84
total649.2195.44414.521159.11
© WSL, Swiss National Forest Inventory, 18.06.2020 #862400/328731
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest
grid: 1.4 x 1.4 km grid
state2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track32.950.0.0.0.32.95
road and skidding road13.2100.0.0.0.13.210
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.0.0.0.1.635
total47.720.0.0.0.47.72
AIroad and skidding track1.7310.0.1.8283.517
road and skidding road0.0.0.0.0.21000.2100
road and cable line0.21000.4720.0.0.657
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6570.21000.21001.041
total2.5240.6572.2245.310
ARroad and skidding track3.3210.0.1.6324.915
road and skidding road1.1400.0.1.0382.127
road and cable line0.3710.21000.21000.648
road and flight path0.5670.0.0.0.0.567
no access intended0.0.0.0.0.0.0.0.
total5.3130.21002.7228.16
BEroad and skidding track52.252.42924.9879.54
road and skidding road17.5100.47115.81133.77
road and cable line10.6137.31620.2938.16
road and flight path6.2181.0452.4299.614
no access intended8.5152.2304.62115.311
total94.9313.31267.94176.11
BL/BSroad and skidding track10.9100.0.2.52913.48
road and skidding road4.5200.0.0.6565.119
road and cable line0.7580.0.0.9501.637
road and flight path0.0.0.0.0.0.0.0.
no access intended0.31000.0.0.21000.572
total16.360.0.4.12120.43
FRroad and skidding track15.790.0.3.32419.08
road and skidding road6.1170.4713.72210.113
road and cable line3.4230.5575.7179.612
road and flight path0.9490.21000.4731.538
no access intended1.1450.0.0.6581.636
total27.251.04013.71041.93
GEroad and skidding track2.7190.0.0.0.2.719
road and skidding road1.0570.0.0.0.1.057
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.750.0.0.0.3.75
GLroad and skidding track1.6350.0.0.6582.129
road and skidding road0.21000.0.0.4710.658
road and cable line1.9311.9302.2296.015
road and flight path1.6351.0440.5573.124
no access intended4.2201.1401.5356.915
total9.5124.0205.21718.75
GRroad and skidding track15.2112.3299.61427.18
road and skidding road6.6171.2416.11813.912
road and cable line26.6814.71143.2684.44
road and flight path8.8152.5286.21817.510
no access intended36.673.32416.91056.85
total93.7424.1881.94199.72
JUroad and skidding track12.1110.4713.72216.28
road and skidding road8.4130.21005.61714.29
road and cable line0.0.0.0.0.4700.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.4710.8502.726
total22.160.94310.51133.52
LUroad and skidding track18.580.0.3.42321.97
road and skidding road9.5130.0.1.53711.012
road and cable line4.7190.6581.7337.115
road and flight path0.21000.0.0.0.0.2100
no access intended0.8490.0.0.4711.241
total33.740.6587.01641.42
NEroad and skidding track15.480.9501.63317.87
road and skidding road7.8140.21001.1419.013
road and cable line0.4700.0.0.21000.558
road and flight path0.21000.0.0.0.0.2100
no access intended0.8510.0.0.21001.045
total24.551.0443.02328.63
NWroad and skidding track0.6590.31000.6581.536
road and skidding road0.4720.21000.21000.848
road and cable line1.8330.4721.8334.119
road and flight path1.3420.31000.31001.934
no access intended0.0.0.0.0.0.0.0.
total4.3181.2442.8248.27
OWroad and skidding track0.8450.0.0.21001.041
road and skidding road1.4350.21001.6343.223
road and cable line4.4200.8453.2238.512
road and flight path2.8240.6592.3285.716
no access intended0.8500.0.0.21001.045
total10.3111.7337.51319.44
SGroad and skidding track13.0111.14410.21224.37
road and skidding road4.3211.0456.11711.512
road and cable line1.8331.3418.61411.712
road and flight path1.4380.5710.4722.330
no access intended4.2220.5702.5297.216
total24.884.42127.9657.13
SHroad and skidding track10.660.0.0.46911.05
road and skidding road1.3390.0.0.0.1.339
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOroad and skidding track21.260.0.1.63622.86
road and skidding road6.7150.0.1.1457.814
road and cable line0.6590.0.0.4721.045
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7570.21000.0.0.950
total29.230.21003.12532.52
SZroad and skidding track4.2210.0.1.3405.418
road and skidding road2.0310.0.1.8333.922
road and cable line5.4171.2416.91513.49
road and flight path2.5280.4710.9443.822
no access intended1.6350.0.0.8492.428
total15.791.63511.71129.04
TGroad and skidding track15.760.0.1.43517.15
road and skidding road2.2280.0.0.8453.024
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.11000.0.0.21000.473
total18.140.0.2.42620.53
TIroad and skidding track5.8180.6588.21514.511
road and skidding road0.8500.8503.9235.519
road and cable line1.8331.33715.71118.810
road and flight path1.0451.8335.9188.715
no access intended25.485.61859.1590.13
total34.7710.11392.83137.62
URroad and skidding track1.2400.0.0.6581.832
road and skidding road0.4710.21000.8501.437
road and cable line0.3701.9291.8324.019
road and flight path2.5271.0442.1295.617
no access intended5.6180.9440.8507.315
total10.0124.0206.11520.16
VDroad and skidding track50.451.8335.81858.04
road and skidding road16.9100.0.1.93118.89
road and cable line2.4292.6284.6209.614
road and flight path1.2410.0.0.8502.032
no access intended6.6170.8502.92610.313
total77.635.21916.01098.72
VSroad and skidding track7.7162.32910.51320.59
road and skidding road2.4290.4713.6236.317
road and cable line7.71612.01218.21037.96
road and flight path9.2156.11811.01326.38
no access intended14.2123.52312.61230.37
total41.2624.3855.84121.32
ZGroad and skidding track1.1390.0.0.8411.926
road and skidding road2.0270.0.0.5672.422
road and cable line0.21000.21001.2321.628
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.3170.21002.5205.95
ZHroad and skidding track37.240.0.0.47137.64
road and skidding road7.3160.0.0.4727.715
road and cable line2.7270.0.0.8503.523
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total47.820.0.1.63549.42
Switzerlandroad and skidding track351.7212.01394.94458.62
road and skidding road123.945.12058.56187.53
road and cable line78.0547.26137.83263.12
road and flight path40.4715.41133.3889.05
no access intended116.0418.810104.44239.22
total709.9198.54428.921237.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #862401/328732
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: forest
grid: terrestrial grid NFI3
state2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track33.440.0.0.0.33.44
road and skidding road12.6100.0.0.0.12.610
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4350.0.0.0.1.435
total47.520.0.0.0.47.52
AIroad and skidding track1.6300.0.1.9243.516
road and skidding road0.11000.0.0.3720.458
road and cable line0.21000.3720.0.0.557
road and flight path0.0.0.0.0.0.0.0.
no access intended0.5570.3690.21001.037
total2.4230.6482.4205.48
ARroad and skidding track3.4200.0.1.4324.815
road and skidding road1.2360.0.0.9382.126
road and cable line0.4570.4720.11000.940
road and flight path0.4680.0.0.0.0.468
no access intended0.0.0.0.0.0.0.0.
total5.5120.4722.4228.36
BEroad and skidding track50.352.32824.6877.24
road and skidding road16.9100.55816.91034.46
road and cable line10.9128.21421.6940.76
road and flight path6.7160.9452.62610.213
no access intended11.9122.3285.21819.49
total96.7314.11171.04181.91
BL/BSroad and skidding track11.1100.0.2.62713.78
road and skidding road4.6190.0.0.5565.118
road and cable line0.7590.0.0.8501.438
road and flight path0.0.0.0.0.0.0.0.
no access intended0.31000.0.0.21000.472
total16.660.0.4.12020.73
FRroad and skidding track15.090.0.3.32218.47
road and skidding road5.9160.3714.22010.512
road and cable line3.9210.5575.71610.011
road and flight path0.8490.3700.6581.733
no access intended1.8310.0.0.5582.327
total27.451.13614.3942.92
GEroad and skidding track2.8170.0.0.0.2.817
road and skidding road0.9570.0.0.0.0.957
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.21000.0.0.0.0.2100
total3.960.0.0.0.3.96
GLroad and skidding track1.6330.0.0.9452.426
road and skidding road0.21000.0.0.3710.558
road and cable line2.8231.6312.8247.213
road and flight path1.7311.3370.5573.521
no access intended4.2191.3351.8307.413
total10.5104.3186.31421.14
GRroad and skidding track15.1112.42710.61328.17
road and skidding road7.2151.1416.21714.511
road and cable line26.6815.41042.3684.33
road and flight path9.8132.8256.41619.09
no access intended37.773.52218.7959.95
total96.4425.2884.24205.91
JUroad and skidding track12.5100.3723.62116.48
road and skidding road8.4130.11005.31713.99
road and cable line0.0.0.0.0.5570.557
road and flight path0.0.0.0.0.0.0.0.
no access intended1.8310.3710.7502.824
total22.660.84310.11133.62
LUroad and skidding track18.780.0.3.22221.97
road and skidding road9.5120.0.1.23710.711
road and cable line4.8170.5571.9307.214
road and flight path0.5570.0.0.0.0.557
no access intended1.4350.0.0.3711.731
total34.940.5576.61542.02
NEroad and skidding track15.080.7501.73117.47
road and skidding road8.1130.21001.3349.612
road and cable line0.3700.0.0.21000.557
road and flight path0.21000.0.0.0.0.2100
no access intended0.9450.21000.21001.337
total24.541.1403.32128.93
NWroad and skidding track0.6590.21000.6581.436
road and skidding road0.4720.21000.21000.748
road and cable line1.5340.8502.0304.316
road and flight path1.5360.21000.21001.930
no access intended0.21000.21000.0.0.367
total4.2181.6332.9228.75
OWroad and skidding track1.0410.0.0.4711.435
road and skidding road1.7310.21001.5343.422
road and cable line4.3190.8453.5218.611
road and flight path3.0230.8502.5266.315
no access intended0.7500.0.0.21000.945
total10.7111.8318.11220.53
SGroad and skidding track13.2101.14110.81125.27
road and skidding road4.3200.9455.91611.112
road and cable line2.2291.5359.51313.111
road and flight path1.3380.4710.4712.030
no access intended4.7190.6573.8219.114
total25.674.52030.4660.62
SHroad and skidding track10.660.0.0.55711.15
road and skidding road1.1390.0.0.0.1.139
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total11.740.0.0.55712.23
SOroad and skidding track20.660.0.1.43622.06
road and skidding road6.5150.0.1.1417.613
road and cable line0.9450.0.0.6581.535
road and flight path0.0.0.0.0.0.0.0.
no access intended1.2400.21000.0.1.437
total29.230.21003.12432.42
SZroad and skidding track4.3190.0.2.3266.715
road and skidding road2.0300.0.1.6333.622
road and cable line5.0171.4357.11413.49
road and flight path2.4270.5580.8443.721
no access intended1.8310.0.0.9442.725
total15.581.92912.8930.13
TGroad and skidding track15.660.0.1.43217.05
road and skidding road2.0280.0.0.7442.723
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.11000.0.0.4700.558
total17.740.0.2.52320.23
TIroad and skidding track5.3180.5588.01513.811
road and skidding road1.1410.7503.8225.618
road and cable line1.6331.23715.91018.79
road and flight path1.2381.8326.0179.014
no access intended32.676.21665.64104.53
total41.9610.41299.33151.61
URroad and skidding track1.1390.0.0.7501.830
road and skidding road0.3710.21000.7501.337
road and cable line0.7491.9271.7324.218
road and flight path3.1231.3372.2276.714
no access intended6.9151.0401.3389.213
total12.1104.4186.61423.14
VDroad and skidding track49.851.8315.91757.54
road and skidding road17.490.0.1.93019.39
road and cable line2.5272.7264.5199.713
road and flight path1.1410.0.0.7501.832
no access intended7.5151.1413.62212.212
total78.235.61716.69100.41
VSroad and skidding track8.4142.52610.81221.68
road and skidding road2.3280.3713.3236.017
road and cable line7.71511.81117.3936.86
road and flight path9.9136.11711.81227.87
no access intended18.1104.42012.81135.36
total46.4525.1756.04127.52
ZGroad and skidding track1.0390.0.0.8411.826
road and skidding road2.0250.0.0.4682.421
road and cable line0.4680.21001.2321.726
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.4150.21002.4206.05
ZHroad and skidding track37.240.0.0.47137.64
road and skidding road6.8150.0.0.4717.215
road and cable line2.8250.0.0.8503.622
road and flight path0.0.0.0.0.0.0.0.
no access intended0.5580.0.0.0.0.558
total47.420.0.1.53548.92
Switzerlandroad and skidding track349.3211.91297.94459.21
road and skidding road123.544.71958.85187.13
road and cable line80.1549.06139.63268.82
road and flight path43.5616.51034.7794.74
no access intended136.5321.69116.43274.52
total732.91103.84447.521284.20
© WSL, Swiss National Forest Inventory, 18.06.2020 #862402/328733
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track32.950.0.0.0.32.95
road and skidding road13.2100.0.0.0.13.210
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4370.0.0.0.1.437
total47.520.0.0.0.47.52
AIroad and skidding track1.7310.0.1.8283.517
road and skidding road0.0.0.0.0.21000.2100
road and cable line0.21000.4720.0.0.657
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6570.21000.21001.041
total2.5240.6572.2245.310
ARroad and skidding track3.3210.0.1.6324.915
road and skidding road1.1400.0.1.0382.127
road and cable line0.3710.21000.21000.648
road and flight path0.5670.0.0.0.0.567
no access intended0.0.0.0.0.0.0.0.
total5.3130.21002.7228.16
BEroad and skidding track51.852.42924.9879.14
road and skidding road17.3100.210015.61133.17
road and cable line11.0137.31620.2938.56
road and flight path6.8171.0452.62810.414
no access intended10.9132.4294.82018.110
total97.8313.31268.14179.21
BL/BSroad and skidding track11.1100.0.2.52913.68
road and skidding road4.5200.0.0.6565.119
road and cable line0.7580.0.0.9501.637
road and flight path0.0.0.0.0.0.0.0.
no access intended0.31000.0.0.21000.572
total16.660.0.4.12120.73
FRroad and skidding track15.790.0.3.32419.08
road and skidding road5.9180.4713.7229.913
road and cable line3.7220.5575.5179.712
road and flight path0.9490.21000.4731.538
no access intended1.6350.0.0.6582.230
total27.851.04013.61042.42
GEroad and skidding track2.7190.0.0.0.2.719
road and skidding road1.0570.0.0.0.1.057
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.21000.0.0.0.0.2100
total3.970.0.0.0.3.97
GLroad and skidding track1.3370.0.0.6581.931
road and skidding road0.21000.0.0.4710.658
road and cable line2.3281.9302.8247.014
road and flight path1.8331.2400.5573.522
no access intended4.2201.1401.9317.314
total9.8124.2196.31520.34
GRroad and skidding track14.8112.5289.61426.98
road and skidding road6.6171.2415.91813.712
road and cable line26.5814.11143.9684.64
road and flight path9.0152.7276.21817.910
no access intended37.673.72319.01060.45
total94.5424.3884.74203.51
JUroad and skidding track11.9110.4713.72216.08
road and skidding road8.4130.21005.61714.29
road and cable line0.0.0.0.0.4700.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.4710.8502.726
total21.960.94310.51133.43
LUroad and skidding track18.380.0.3.42321.67
road and skidding road9.3130.0.1.53710.812
road and cable line4.9190.6581.9317.515
road and flight path0.4710.0.0.0.0.471
no access intended0.8490.0.0.4711.241
total33.740.6587.21541.62
NEroad and skidding track15.290.9501.43517.57
road and skidding road7.8140.21001.2379.213
road and cable line0.4700.0.0.21000.558
road and flight path0.21000.0.0.0.0.2100
no access intended0.6590.0.0.21000.851
total24.151.0443.02328.23
NWroad and skidding track0.6590.31000.6581.536
road and skidding road0.4720.21000.21000.848
road and cable line1.8330.4721.8334.119
road and flight path1.3420.31000.31001.934
no access intended0.21000.0.0.0.0.2100
total4.4171.2442.8248.46
OWroad and skidding track0.8450.0.0.4711.338
road and skidding road1.4350.21001.6343.223
road and cable line4.4200.8453.2238.512
road and flight path2.8240.6592.5275.916
no access intended0.8500.0.0.21001.045
total10.3111.7337.91219.84
SGroad and skidding track13.0111.14410.61224.77
road and skidding road3.9231.0455.31810.213
road and cable line2.0311.5389.31412.811
road and flight path1.4380.5710.4722.330
no access intended4.6210.5703.8238.915
total25.084.52129.5659.03
SHroad and skidding track10.660.0.0.46911.05
road and skidding road1.3390.0.0.0.1.339
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOroad and skidding track21.060.0.1.43822.46
road and skidding road6.7150.0.1.1457.814
road and cable line0.6590.0.0.4721.045
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7570.21000.0.0.950
total29.030.21002.92632.12
SZroad and skidding track4.2210.0.1.3405.418
road and skidding road1.6350.0.1.8333.523
road and cable line5.4171.5357.31514.29
road and flight path2.5280.6580.9444.022
no access intended2.0310.0.0.8492.826
total15.792.12912.11029.93
TGroad and skidding track15.360.0.1.43516.85
road and skidding road2.2280.0.0.8453.024
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.11000.0.0.21000.473
total17.740.0.2.42620.12
TIroad and skidding track5.6190.6588.31514.511
road and skidding road1.0450.8503.9235.719
road and cable line1.8331.33715.91119.010
road and flight path1.0451.8335.9188.715
no access intended32.675.41964.74102.73
total41.969.91398.73150.61
URroad and skidding track1.2400.0.0.6581.832
road and skidding road0.4710.21000.8501.437
road and cable line0.3701.9291.8324.019
road and flight path2.8251.0442.2286.116
no access intended6.3170.9441.4388.614
total11.1114.0206.91422.05
VDroad and skidding track49.451.8335.61856.94
road and skidding road16.7100.0.1.73318.49
road and cable line2.4292.7264.6209.814
road and flight path1.0450.0.0.8501.833
no access intended7.4161.0453.32411.612
total76.935.51816.11098.52
VSroad and skidding track7.9152.32910.51320.79
road and skidding road2.4290.4713.6236.317
road and cable line7.71612.01218.21037.96
road and flight path9.4146.31711.61227.38
no access intended16.6114.12213.41234.17
total44.0625.1857.24126.32
ZGroad and skidding track1.1390.0.0.8411.926
road and skidding road2.0270.0.0.5672.422
road and cable line0.21000.21001.2321.628
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.3170.21002.5205.95
ZHroad and skidding track37.240.0.0.47137.64
road and skidding road7.3160.0.0.4727.715
road and cable line2.7270.0.0.8503.523
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total47.820.0.1.63549.42
Switzerlandroad and skidding track348.8212.21395.14456.12
road and skidding road122.444.92057.36184.73
road and cable line79.4547.46140.63267.42
road and flight path41.9716.21134.4792.54
no access intended131.9420.010115.84267.72
total724.51100.64443.221268.40
© WSL, Swiss National Forest Inventory, 18.06.2020 #862403/328734
NFI4
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track29.750.0.0.0.29.75
road and skidding road12.2110.0.0.0.12.211
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended5.4180.0.0.0.5.418
total47.520.0.0.0.47.52
AIroad and skidding track1.3340.0.1.5332.820
road and skidding road0.4700.21000.4721.044
road and cable line0.21000.21000.4720.848
road and flight path0.6570.21000.0.0.849
no access intended0.0.0.0.0.0.0.0.
total2.5240.6572.2245.310
ARroad and skidding track3.4210.0.1.9295.314
road and skidding road1.0440.0.0.3691.337
road and cable line1.2380.21000.5551.830
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total5.6120.21002.7228.46
BEroad and skidding track45.360.65814.11260.05
road and skidding road16.8111.04515.71133.67
road and cable line16.3117.81525.6849.75
road and flight path1.4382.3301.4385.120
no access intended14.3121.43810.41426.08
total94.2313.11267.14174.31
BL/BSroad and skidding track10.7110.0.1.83512.49
road and skidding road4.8190.0.1.1445.916
road and cable line0.5710.0.0.8501.341
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7560.0.0.4711.243
total16.760.0.4.12120.83
FRroad and skidding track16.980.0.3.22320.17
road and skidding road3.2250.0.2.2295.418
road and cable line3.0240.5576.3169.812
road and flight path0.4710.21000.0.0.658
no access intended3.8230.3701.7365.818
total27.451.04013.41041.83
GEroad and skidding track3.3130.0.0.0.3.313
road and skidding road0.0.0.0.0.0.0.0.
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.41000.0.0.0.0.4100
total3.750.0.0.0.3.75
GLroad and skidding track0.6580.21000.9471.833
road and skidding road0.0.0.0.0.0.0.0.
road and cable line4.0202.1292.6258.711
road and flight path1.5351.3370.8493.722
no access intended1.0450.6580.9442.527
total7.1154.2195.21716.66
GRroad and skidding track17.9103.62312.61234.07
road and skidding road5.8180.21004.52110.513
road and cable line27.1812.21246.5685.84
road and flight path22.796.91716.21145.86
no access intended3.8230.4712.2306.418
total77.4423.1981.94182.51
JUroad and skidding track10.7120.21002.12913.010
road and skidding road9.6120.5567.61417.77
road and cable line0.21000.0.0.4710.657
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.21000.6582.428
total22.160.94310.71133.72
LUroad and skidding track11.1120.0.1.43712.511
road and skidding road6.1170.0.0.9506.916
road and cable line4.1210.21002.0316.317
road and flight path0.0.0.21000.4710.757
no access intended11.9110.21002.42814.510
total33.240.6587.01640.82
NEroad and skidding track14.090.21000.55814.79
road and skidding road8.8130.9502.02911.710
road and cable line0.4700.0.0.0.0.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4380.0.0.3711.733
total24.651.0442.82428.53
NWroad and skidding track0.0.0.31000.4720.759
road and skidding road0.4720.0.0.5681.047
road and cable line1.8350.4721.4353.621
road and flight path1.0490.31000.31001.539
no access intended1.2420.21000.21001.636
total4.5181.2442.8248.47
OWroad and skidding track0.9450.0.0.8511.733
road and skidding road0.7510.0.0.8491.534
road and cable line4.5191.4384.41910.39
road and flight path1.3380.7510.9492.825
no access intended3.0240.0.1.1404.120
total10.5112.0308.01320.44
SGroad and skidding track10.2130.7588.91319.88
road and skidding road5.9180.4714.12010.513
road and cable line3.2251.93310.21315.410
road and flight path5.3191.1453.92310.313
no access intended0.0.0.21000.21000.571
total24.784.42127.4756.53
SHroad and skidding track10.560.0.0.46910.96
road and skidding road1.2390.0.0.0.1.239
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended0.21000.0.0.0.0.2100
total12.140.0.0.46912.53
SOroad and skidding track18.070.0.0.94518.97
road and skidding road6.3160.0.1.2447.515
road and cable line2.0320.0.0.21002.230
road and flight path0.0.0.0.0.0.0.0.
no access intended3.2250.21000.6593.922
total29.530.21002.92632.62
SZroad and skidding track1.6350.0.0.8502.428
road and skidding road1.8330.0.1.6353.423
road and cable line3.8221.2407.21412.210
road and flight path0.6580.21000.21001.044
no access intended7.6150.4712.13110.013
total15.591.73311.91029.14
TGroad and skidding track14.670.0.1.23515.86
road and skidding road2.6260.0.0.8503.422
road and cable line0.21000.0.0.4730.658
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total17.940.0.2.42620.32
TIroad and skidding track0.6580.0.1.2411.833
road and skidding road7.2160.4708.21515.811
road and cable line3.3242.23018.91024.38
road and flight path10.4136.41750.3567.04
no access intended8.0150.6589.81418.510
total29.589.51488.33127.42
URroad and skidding track1.4370.0.0.8502.229
road and skidding road0.5570.0.0.21000.750
road and cable line1.3382.3272.8246.413
road and flight path1.8321.1400.8503.821
no access intended2.1290.21001.1403.422
total7.2143.7215.71616.55
VDroad and skidding track47.550.4702.72650.65
road and skidding road13.8110.4711.93116.110
road and cable line4.2222.9257.11614.211
road and flight path3.6231.5371.8336.917
no access intended7.3160.0.2.4299.614
total76.435.21915.81097.42
VSroad and skidding track7.2161.8337.21616.210
road and skidding road3.8230.4713.0267.216
road and cable line7.81611.71220.4939.96
road and flight path14.7118.21521.4944.36
no access intended6.7171.8335.11913.612
total40.2623.9857.04121.12
ZGroad and skidding track2.0260.0.0.7462.721
road and skidding road1.2360.0.0.5671.728
road and cable line0.21000.21001.1331.629
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.5150.21002.3226.05
ZHroad and skidding track37.840.0.0.65838.44
road and skidding road5.4190.0.0.4705.918
road and cable line4.7200.0.0.6585.219
road and flight path0.0.0.0.0.0.0.0.
no access intended1.0450.0.0.0.1.045
total48.920.0.1.63550.51
Switzerlandroad and skidding track317.327.81666.65391.82
road and skidding road119.744.42157.86182.03
road and cable line94.5447.46159.63301.52
road and flight path65.6530.4898.34194.33
no access intended85.156.71741.47133.24
total682.2196.84423.721202.71
© WSL, Swiss National Forest Inventory, 18.06.2020 #862404/328735
NFI4
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track29.750.0.0.0.29.75
road and skidding road12.2110.0.0.0.12.211
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended5.4180.0.0.0.5.418
total47.520.0.0.0.47.52
AIroad and skidding track1.3340.0.1.5332.820
road and skidding road0.4700.21000.4721.044
road and cable line0.21000.21000.4720.848
road and flight path0.6570.21000.0.0.849
no access intended0.0.0.0.0.0.0.0.
total2.5240.6572.2245.310
ARroad and skidding track3.2220.0.1.9295.215
road and skidding road1.0440.0.0.3691.337
road and cable line1.1420.21000.5551.731
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total5.3130.21002.7228.16
BEroad and skidding track44.360.65814.11259.05
road and skidding road16.6111.04515.71133.47
road and cable line15.3117.81525.2848.36
road and flight path1.8332.3301.4385.519
no access intended15.3111.43810.21426.88
total93.4413.11266.54172.91
BL/BSroad and skidding track10.3110.0.1.83512.09
road and skidding road4.8190.0.1.1445.916
road and cable line0.5710.0.0.8501.341
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7560.0.0.4711.243
total16.360.0.4.12120.43
FRroad and skidding track16.980.0.3.22320.17
road and skidding road2.8260.0.2.2295.019
road and cable line3.0240.5576.3169.812
road and flight path0.4710.21000.0.0.658
no access intended3.8230.3701.9346.018
total27.051.04013.61041.63
GEroad and skidding track3.3130.0.0.0.3.313
road and skidding road0.0.0.0.0.0.0.0.
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.41000.0.0.0.0.4100
total3.750.0.0.0.3.75
GLroad and skidding track0.4710.21000.9471.635
road and skidding road0.0.0.0.0.0.0.0.
road and cable line4.0202.1292.6258.711
road and flight path2.9251.1390.8494.819
no access intended1.9310.6580.9443.422
total9.3124.0205.21718.55
GRroad and skidding track18.9103.32412.21234.47
road and skidding road5.2190.21004.5219.914
road and cable line28.8812.61245.9687.24
road and flight path31.886.91716.01154.76
no access intended6.4180.4712.4299.215
total91.1423.3980.94195.42
JUroad and skidding track10.6120.21001.93112.710
road and skidding road9.6120.5567.61417.77
road and cable line0.21000.0.0.4710.657
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.21000.6582.428
total21.960.94310.51133.43
LUroad and skidding track11.3110.0.1.43712.710
road and skidding road6.1170.0.0.9506.916
road and cable line3.9220.21002.0316.117
road and flight path0.0.0.21000.4710.757
no access intended11.9110.21002.42814.510
total33.140.6587.01640.82
NEroad and skidding track13.690.21000.55814.39
road and skidding road8.8130.9502.02911.710
road and cable line0.4700.0.0.0.0.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4380.0.0.3711.733
total24.151.0442.82428.03
NWroad and skidding track0.0.0.31000.4720.759
road and skidding road0.4720.0.0.5681.047
road and cable line1.8350.4721.4353.621
road and flight path0.8560.31000.31001.342
no access intended1.2420.21000.21001.636
total4.3181.2442.8248.27
OWroad and skidding track0.7500.0.0.5591.337
road and skidding road0.7510.0.0.8491.534
road and cable line4.5191.0454.41910.010
road and flight path1.3380.7510.9492.825
no access intended3.0240.0.0.9443.920
total10.3111.7337.51319.44
SGroad and skidding track9.7130.7588.91319.38
road and skidding road5.3190.4714.1209.813
road and cable line3.2251.9339.81314.910
road and flight path5.9181.1453.72310.713
no access intended0.21000.21000.21000.758
total24.484.42126.7755.53
SHroad and skidding track10.360.0.0.46910.76
road and skidding road1.2390.0.0.0.1.239
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended0.21000.0.0.0.0.2100
total11.940.0.0.46912.33
SOroad and skidding track18.070.0.0.94518.97
road and skidding road6.1160.0.1.2447.315
road and cable line2.0320.0.0.21002.230
road and flight path0.0.0.0.0.0.0.0.
no access intended2.9250.21000.6593.722
total29.030.21002.92632.12
SZroad and skidding track1.6350.0.0.8502.428
road and skidding road1.8330.0.1.6353.423
road and cable line3.6231.2407.01511.810
road and flight path0.6580.21000.21001.044
no access intended7.6150.21002.1319.913
total15.391.63511.71128.54
TGroad and skidding track14.670.0.1.23515.86
road and skidding road2.4280.0.0.8503.123
road and cable line0.21000.0.0.4730.658
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total17.740.0.2.42620.12
TIroad and skidding track0.6580.0.1.2411.833
road and skidding road7.0170.4708.41515.811
road and cable line3.5232.23019.3924.98
road and flight path10.4136.81651.8568.94
no access intended12.7120.65811.61324.88
total34.179.91392.23136.22
URroad and skidding track1.2390.0.0.8502.031
road and skidding road0.5570.0.0.21000.750
road and cable line1.5352.3272.8246.613
road and flight path2.3291.1401.0454.420
no access intended3.9220.6581.3375.817
total9.3134.0206.11519.56
VDroad and skidding track46.550.4702.72649.65
road and skidding road13.8110.4711.93116.110
road and cable line3.8232.9257.11613.811
road and flight path4.2211.5371.6357.316
no access intended7.5160.0.2.4299.914
total75.835.21915.61096.62
VSroad and skidding track7.0171.8337.01615.811
road and skidding road2.8270.4713.0266.218
road and cable line7.61611.71220.1939.46
road and flight path15.3118.61520.8944.76
no access intended7.7161.8334.92014.411
total40.4624.3855.84120.62
ZGroad and skidding track1.8280.0.0.7462.522
road and skidding road1.2360.0.0.5671.728
road and cable line0.21000.21001.1331.629
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.3170.21002.3225.76
ZHroad and skidding track37.240.0.0.65837.94
road and skidding road5.2190.0.0.4705.718
road and cable line4.3210.0.0.6584.820
road and flight path0.0.0.0.0.0.0.0.
no access intended1.0450.0.0.0.1.045
total47.820.0.1.63549.42
Switzerlandroad and skidding track313.127.61665.65386.32
road and skidding road116.044.42158.06178.53
road and cable line94.0447.56158.13299.52
road and flight path78.4531.0898.94208.23
no access intended97.346.91743.27147.33
total698.8197.44423.721219.81
© WSL, Swiss National Forest Inventory, 18.06.2020 #862405/328736
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest
grid: terrestrial grid NFI3
state2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track33.440.0.0.0.33.44
road and skidding road12.6100.0.0.0.12.610
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4350.0.0.0.1.435
total47.520.0.0.0.47.52
AIroad and skidding track1.6300.0.1.9243.516
road and skidding road0.11000.0.0.3720.458
road and cable line0.21000.3720.0.0.557
road and flight path0.0.0.0.0.0.0.0.
no access intended0.5570.3690.21001.037
total2.4230.6482.4205.48
ARroad and skidding track3.4200.0.1.4324.815
road and skidding road1.2360.0.0.9382.126
road and cable line0.4570.4720.11000.940
road and flight path0.4680.0.0.0.0.468
no access intended0.0.0.0.0.0.0.0.
total5.5120.4722.4228.36
BEroad and skidding track50.252.32824.3876.74
road and skidding road16.7100.55816.61033.97
road and cable line10.4138.21421.2939.86
road and flight path5.8170.9452.4279.114
no access intended8.8142.1294.71915.710
total91.9314.01169.34175.21
BL/BSroad and skidding track10.8100.0.2.62713.58
road and skidding road4.6190.0.0.5565.118
road and cable line0.7590.0.0.8501.438
road and flight path0.0.0.0.0.0.0.0.
no access intended0.31000.0.0.21000.472
total16.460.0.4.12020.53
FRroad and skidding track15.090.0.3.32218.47
road and skidding road5.8160.3714.22010.312
road and cable line3.5210.5575.7169.711
road and flight path0.8490.3700.6581.733
no access intended1.1410.0.0.5581.633
total26.251.13614.3941.62
GEroad and skidding track2.8170.0.0.0.2.817
road and skidding road0.9570.0.0.0.0.957
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.750.0.0.0.3.75
GLroad and skidding track1.6330.0.0.9452.426
road and skidding road0.21000.0.0.3710.558
road and cable line2.5251.6312.2276.314
road and flight path1.6330.9450.5572.923
no access intended4.2191.3351.5337.014
total10.1113.8195.31619.25
GRroad and skidding track15.1112.32810.41327.87
road and skidding road7.2151.1416.21714.511
road and cable line26.1815.41041.6683.14
road and flight path9.4142.4276.41618.310
no access intended35.673.22316.61055.35
total93.4424.3881.24199.01
JUroad and skidding track12.3100.3723.62116.28
road and skidding road8.4130.11005.31713.99
road and cable line0.0.0.0.0.5570.557
road and flight path0.0.0.0.0.0.0.0.
no access intended1.8310.3710.7502.824
total22.560.84310.11133.42
LUroad and skidding track18.580.0.3.22221.77
road and skidding road9.5120.0.1.23710.711
road and cable line4.6170.5571.7316.814
road and flight path0.4700.0.0.0.0.470
no access intended1.2370.0.0.3711.633
total34.240.5576.51541.22
NEroad and skidding track15.080.7501.73117.47
road and skidding road8.1130.21001.2379.512
road and cable line0.3700.0.0.21000.557
road and flight path0.21000.0.0.0.0.2100
no access intended0.9450.21000.21001.337
total24.541.1403.22228.83
NWroad and skidding track0.6590.21000.6581.436
road and skidding road0.4720.21000.21000.748
road and cable line1.5340.8502.0304.316
road and flight path1.3380.21000.21001.832
no access intended0.0.0.21000.0.0.2100
total3.8181.6332.9228.36
OWroad and skidding track1.0410.0.0.21001.138
road and skidding road1.7310.21001.5343.422
road and cable line4.3190.8453.5218.611
road and flight path3.0230.5592.4276.015
no access intended0.7500.0.0.21000.945
total10.7111.5337.81220.04
SGroad and skidding track13.0111.14110.51224.77
road and skidding road4.3200.9455.71610.912
road and cable line2.0301.1418.81312.011
road and flight path1.3380.4710.4712.030
no access intended4.3200.4702.7267.415
total24.974.02128.1657.13
SHroad and skidding track10.660.0.0.55711.15
road and skidding road1.1390.0.0.0.1.139
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total11.740.0.0.55712.23
SOroad and skidding track20.660.0.1.43622.06
road and skidding road6.5150.0.1.1417.613
road and cable line0.9450.0.0.6581.535
road and flight path0.0.0.0.0.0.0.0.
no access intended1.2400.21000.0.1.437
total29.230.21003.12432.42
SZroad and skidding track4.3190.0.2.2276.515
road and skidding road2.0300.0.1.6333.622
road and cable line5.0171.0406.71412.79
road and flight path2.4270.4710.8443.622
no access intended1.4350.0.0.9442.327
total15.191.43512.21028.73
TGroad and skidding track15.660.0.1.43217.05
road and skidding road2.0280.0.0.7442.723
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.11000.0.0.4700.558
total17.740.0.2.52320.23
TIroad and skidding track5.2180.5587.81513.511
road and skidding road0.9450.7503.8225.518
road and cable line1.6331.23715.51018.39
road and flight path1.2381.8326.0179.014
no access intended24.786.21659.3490.23
total33.6710.41292.43136.52
URroad and skidding track1.1390.0.0.7501.830
road and skidding road0.3710.21000.7501.337
road and cable line0.7491.9271.7324.218
road and flight path2.8241.3372.1286.215
no access intended5.5171.0400.7507.215
total10.4114.4185.91520.75
VDroad and skidding track49.851.8315.91757.54
road and skidding road17.490.0.1.93019.39
road and cable line2.5272.5264.5199.513
road and flight path1.1410.0.0.7501.832
no access intended6.4160.9453.22410.513
total77.235.21816.21098.62
VSroad and skidding track8.1142.52610.61221.18
road and skidding road2.3280.3713.3236.017
road and cable line7.71511.81117.3936.86
road and flight path9.4146.01710.91226.28
no access intended15.3103.92111.91231.17
total42.7624.5754.04121.22
ZGroad and skidding track1.0390.0.0.8411.826
road and skidding road2.0250.0.0.4682.421
road and cable line0.4680.21001.2321.726
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.4150.21002.4206.05
ZHroad and skidding track37.240.0.0.47137.64
road and skidding road6.8150.0.0.4717.215
road and cable line2.8250.0.0.8503.622
road and flight path0.0.0.0.0.0.0.0.
no access intended0.5580.0.0.0.0.558
total47.420.0.1.53548.92
Switzerlandroad and skidding track347.8211.81296.34455.91
road and skidding road123.044.71958.15185.93
road and cable line78.0548.26136.53262.72
road and flight path41.0615.11133.3789.54
no access intended116.1420.29104.24240.52
total706.01100.04428.421234.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #862406/328737
NFI4
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest
grid: 1.4 x 1.4 km grid
state2009/17
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track29.750.0.0.0.29.75
road and skidding road12.2110.0.0.0.12.211
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended5.4180.0.0.0.5.418
total47.520.0.0.0.47.52
AIroad and skidding track1.3340.0.1.5332.820
road and skidding road0.4700.21000.4721.044
road and cable line0.21000.21000.4720.848
road and flight path0.6570.21000.0.0.849
no access intended0.0.0.0.0.0.0.0.
total2.5240.6572.2245.310
ARroad and skidding track3.4210.0.1.9295.314
road and skidding road1.0440.0.0.3691.337
road and cable line1.2380.21000.5551.830
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total5.6120.21002.7228.46
BEroad and skidding track45.360.65814.11260.05
road and skidding road17.0101.04515.71133.87
road and cable line16.7117.81525.6850.15
road and flight path2.4292.3301.4386.118
no access intended17.1111.43810.41428.88
total98.6313.11267.14178.81
BL/BSroad and skidding track10.7110.0.1.83512.49
road and skidding road4.8190.0.1.1445.916
road and cable line0.5710.0.0.8501.341
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7560.0.0.4711.243
total16.760.0.4.12120.83
FRroad and skidding track16.980.0.3.22320.17
road and skidding road3.2250.0.2.2295.418
road and cable line3.0240.5576.3169.812
road and flight path0.4710.21000.0.0.658
no access intended3.8230.3701.9346.018
total27.451.04013.61042.03
GEroad and skidding track3.3130.0.0.0.3.313
road and skidding road0.0.0.0.0.0.0.0.
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.41000.0.0.0.0.4100
total3.750.0.0.0.3.75
GLroad and skidding track0.6580.21000.9471.833
road and skidding road0.0.0.0.0.0.0.0.
road and cable line4.2192.1292.6258.911
road and flight path3.1241.3370.8495.218
no access intended2.4280.6580.9443.821
total10.3124.2195.21719.85
GRroad and skidding track19.3103.62312.81235.67
road and skidding road5.8180.21004.52110.513
road and cable line30.6812.61247.1690.24
road and flight path37.077.11617.21061.35
no access intended7.0170.4712.4299.814
total99.7423.7983.94207.42
JUroad and skidding track10.7120.21002.12913.010
road and skidding road9.6120.5567.61417.77
road and cable line0.21000.0.0.4710.657
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.21000.6582.428
total22.160.94310.71133.72
LUroad and skidding track11.3110.0.1.43712.710
road and skidding road6.1170.0.0.9506.916
road and cable line4.1210.21002.0316.317
road and flight path0.0.0.21000.4710.757
no access intended11.9110.21002.42814.510
total33.340.6587.01641.02
NEroad and skidding track14.090.21000.55814.79
road and skidding road8.8130.9502.02911.710
road and cable line0.4700.0.0.0.0.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4380.0.0.3711.733
total24.651.0442.82428.53
NWroad and skidding track0.0.0.31000.4720.759
road and skidding road0.4720.0.0.5681.047
road and cable line1.8350.4721.4353.621
road and flight path1.0490.31000.31001.539
no access intended1.2420.21000.21001.636
total4.5181.2442.8248.47
OWroad and skidding track0.9450.0.0.8511.733
road and skidding road0.7510.0.0.8491.534
road and cable line4.5191.4384.41910.39
road and flight path1.3380.7510.9492.825
no access intended3.4230.0.1.3374.719
total10.9112.0308.21321.04
SGroad and skidding track10.4130.7588.91320.08
road and skidding road5.9180.4714.12010.513
road and cable line3.8231.93310.21316.010
road and flight path6.8171.1453.92311.712
no access intended0.4710.21000.21000.950
total27.374.42127.4759.03
SHroad and skidding track10.560.0.0.46910.96
road and skidding road1.2390.0.0.0.1.239
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended0.21000.0.0.0.0.2100
total12.140.0.0.46912.53
SOroad and skidding track18.070.0.0.94518.97
road and skidding road6.3160.0.1.2447.515
road and cable line2.0320.0.0.21002.230
road and flight path0.0.0.0.0.0.0.0.
no access intended3.2250.21000.6593.922
total29.530.21002.92632.62
SZroad and skidding track1.6350.0.0.8502.428
road and skidding road1.8330.0.1.6353.423
road and cable line3.8221.2407.21412.210
road and flight path0.6580.21000.21001.044
no access intended7.8150.4712.13110.213
total15.791.73311.91029.34
TGroad and skidding track14.670.0.1.23515.86
road and skidding road2.6260.0.0.8503.422
road and cable line0.21000.0.0.4730.658
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total17.940.0.2.42620.32
TIroad and skidding track0.6580.0.1.2411.833
road and skidding road7.6160.4708.61516.510
road and cable line3.7232.23019.3925.18
road and flight path11.2136.81652.8570.74
no access intended14.6110.65812.41227.68
total37.679.91394.23141.82
URroad and skidding track1.6340.0.0.8502.428
road and skidding road0.5570.0.0.21000.750
road and cable line1.5352.3272.8246.613
road and flight path2.7271.1401.0454.819
no access intended4.7200.6581.3376.616
total11.0124.0206.11521.16
VDroad and skidding track47.550.4702.72650.65
road and skidding road13.8110.4711.93116.110
road and cable line4.2222.9257.11614.211
road and flight path4.4211.5371.8337.716
no access intended7.5160.0.2.4299.914
total77.435.21915.81098.42
VSroad and skidding track7.2161.8337.21616.210
road and skidding road4.0220.4713.0267.416
road and cable line8.01511.71220.4940.16
road and flight path18.6108.61521.4948.55
no access intended8.7151.8335.11915.611
total46.5624.3857.04127.82
ZGroad and skidding track2.0260.0.0.7462.721
road and skidding road1.2360.0.0.5671.728
road and cable line0.21000.21001.1331.629
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.5150.21002.3226.05
ZHroad and skidding track37.840.0.0.65838.44
road and skidding road5.4190.0.0.4705.918
road and cable line4.7200.0.0.6585.219
road and flight path0.0.0.0.0.0.0.0.
no access intended1.0450.0.0.0.1.045
total48.920.0.1.63550.51
Switzerlandroad and skidding track319.327.81666.85393.92
road and skidding road120.544.42158.26183.23
road and cable line99.9447.86160.63308.32
road and flight path90.1531.48102.04223.53
no access intended104.947.01744.77156.73
total734.7198.54432.321265.61
© WSL, Swiss National Forest Inventory, 18.06.2020 #862407/328738
NFI4
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track28.950.0.0.0.28.95
road and skidding road12.2110.0.0.0.12.211
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended5.4180.0.0.0.5.418
total46.720.0.0.0.46.72
AIroad and skidding track1.3340.0.1.5332.820
road and skidding road0.21000.21000.4720.849
road and cable line0.21000.21000.4720.848
road and flight path0.6570.21000.0.0.849
no access intended0.0.0.0.0.0.0.0.
total2.3250.6572.2245.19
ARroad and skidding track3.2220.0.1.9295.215
road and skidding road1.0440.0.0.3691.337
road and cable line1.1420.21000.5551.731
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total5.3130.21002.7228.16
BEroad and skidding track43.960.65813.91258.45
road and skidding road15.6111.04515.11131.87
road and cable line13.9127.61624.8846.36
road and flight path0.8502.1311.4384.222
no access intended9.2141.4389.81420.49
total83.5412.71264.94161.11
BL/BSroad and skidding track9.9110.0.1.83511.710
road and skidding road4.5200.0.0.9505.418
road and cable line0.5710.0.0.8501.341
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7560.0.0.4711.243
total15.760.0.3.92219.64
FRroad and skidding track16.590.0.3.22319.78
road and skidding road2.8260.0.2.2295.019
road and cable line2.8250.5575.9179.212
road and flight path0.4710.21000.0.0.658
no access intended3.4250.3701.5385.219
total25.951.04012.81039.73
GEroad and skidding track2.7190.0.0.0.2.719
road and skidding road0.0.0.0.0.0.0.0.
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.41000.0.0.0.0.4100
total3.1130.0.0.0.3.113
GLroad and skidding track0.4710.21000.9471.635
road and skidding road0.0.0.0.0.0.0.0.
road and cable line3.1232.1292.6257.812
road and flight path0.8501.1390.8492.725
no access intended0.6580.4710.7491.733
total4.9183.8205.11713.87
GRroad and skidding track15.5113.12510.01428.68
road and skidding road4.4210.21004.1228.715
road and cable line20.9911.81241.3673.94
road and flight path11.8135.31912.31229.48
no access intended1.6350.4712.0323.922
total54.2520.7969.64144.52
JUroad and skidding track10.2120.21001.93112.311
road and skidding road9.4120.5567.61417.58
road and cable line0.21000.0.0.4710.657
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.21000.6582.428
total21.360.94310.51132.83
LUroad and skidding track11.1120.0.1.43712.511
road and skidding road5.9170.0.0.9506.716
road and cable line3.5230.21002.0315.718
road and flight path0.0.0.21000.4710.757
no access intended11.5110.21002.23013.910
total31.940.6586.81639.43
NEroad and skidding track13.0100.21000.55813.79
road and skidding road8.6130.9502.02911.510
road and cable line0.4700.0.0.0.0.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4380.0.0.3711.733
total23.451.0442.82427.33
NWroad and skidding track0.0.0.31000.4720.759
road and skidding road0.4720.0.0.31000.757
road and cable line1.5390.4721.4353.422
road and flight path0.5710.31000.31001.148
no access intended1.0470.21000.21001.439
total3.5211.2442.6267.29
OWroad and skidding track0.5590.0.0.5591.141
road and skidding road0.7510.0.0.8491.534
road and cable line4.3201.0454.3199.610
road and flight path1.3380.7510.9492.825
no access intended2.2280.0.0.9443.123
total9.1121.7337.41318.14
SGroad and skidding track9.2140.7588.71318.69
road and skidding road5.1200.4714.1209.613
road and cable line2.7281.9338.71413.311
road and flight path3.2251.1452.8277.116
no access intended0.0.0.21000.0.0.2100
total20.194.42124.3748.84
SHroad and skidding track10.360.0.0.46910.76
road and skidding road1.2390.0.0.0.1.239
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended0.21000.0.0.0.0.2100
total11.940.0.0.46912.33
SOroad and skidding track17.780.0.0.94518.67
road and skidding road5.9170.0.1.2447.115
road and cable line2.0320.0.0.21002.230
road and flight path0.0.0.0.0.0.0.0.
no access intended2.9250.21000.6593.722
total28.530.21002.92631.62
SZroad and skidding track1.6350.0.0.6582.229
road and skidding road1.6350.0.1.4383.025
road and cable line3.4231.2406.61511.211
road and flight path0.4710.0.0.21000.658
no access intended6.4160.21001.9338.414
total13.5101.43710.71125.54
TGroad and skidding track14.370.0.1.23515.66
road and skidding road2.1300.0.0.8502.924
road and cable line0.21000.0.0.4730.658
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total17.250.0.2.42619.63
TIroad and skidding track0.21000.0.1.2411.438
road and skidding road5.0200.21007.01612.312
road and cable line2.9262.03218.51023.48
road and flight path5.3195.41841.2652.05
no access intended2.8270.4717.71610.913
total16.3108.01575.6399.92
URroad and skidding track0.6560.0.0.6581.240
road and skidding road0.4710.0.0.21000.658
road and cable line1.0452.3272.8246.114
road and flight path1.2400.9440.6572.725
no access intended1.7320.21000.4712.327
total4.8183.5214.61812.96
VDroad and skidding track42.950.4702.52745.75
road and skidding road12.9120.4711.93115.310
road and cable line3.0262.7266.91612.612
road and flight path2.4281.5371.6355.519
no access intended6.3170.0.2.4298.615
total67.535.01915.21087.72
VSroad and skidding track5.1191.6356.61713.311
road and skidding road2.0310.4712.9265.219
road and cable line5.81811.51219.3936.66
road and flight path8.0158.01518.31034.47
no access intended3.6231.4384.5219.514
total24.5822.9851.6599.02
ZGroad and skidding track1.6300.0.0.7462.323
road and skidding road1.1390.0.0.5671.529
road and cable line0.21000.21001.1331.629
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total2.9190.21002.3225.48
ZHroad and skidding track37.040.0.0.65837.74
road and skidding road5.0190.0.0.4705.518
road and cable line4.1210.0.0.6584.620
road and flight path0.0.0.0.0.0.0.0.
no access intended1.0450.0.0.0.1.045
total47.120.0.1.63548.82
Switzerlandroad and skidding track297.727.21762.05367.02
road and skidding road108.144.22254.86167.23
road and cable line78.0545.96149.23273.12
road and flight path36.9726.8880.84144.53
no access intended64.555.71935.97106.24
total585.2189.84382.821057.81
© WSL, Swiss National Forest Inventory, 18.06.2020 #862408/328739
NFI4
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track29.750.0.0.0.29.75
road and skidding road12.2110.0.0.0.12.211
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended5.4180.0.0.0.5.418
total47.520.0.0.0.47.52
AIroad and skidding track1.3340.0.1.5332.820
road and skidding road0.4700.21000.4721.044
road and cable line0.21000.21000.4720.848
road and flight path0.6570.21000.0.0.849
no access intended0.0.0.0.0.0.0.0.
total2.5240.6572.2245.310
ARroad and skidding track3.2220.0.1.9295.215
road and skidding road1.0440.0.0.3691.337
road and cable line1.1420.21000.5551.731
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total5.3130.21002.7228.16
BEroad and skidding track44.560.65814.11259.25
road and skidding road16.6111.04515.71133.47
road and cable line15.7117.81526.0849.55
road and flight path2.6282.4291.4386.417
no access intended18.3101.43811.01330.78
total97.8313.31268.14179.21
BL/BSroad and skidding track10.3110.0.1.83512.09
road and skidding road5.1180.0.1.1446.216
road and cable line0.5710.0.0.8501.341
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7560.0.0.4711.243
total16.660.0.4.12120.73
FRroad and skidding track16.980.0.3.22320.17
road and skidding road2.8260.0.2.2295.019
road and cable line3.0240.5576.3169.812
road and flight path0.4710.21000.0.0.658
no access intended4.6210.3701.9346.917
total27.851.04013.61042.42
GEroad and skidding track3.5140.0.0.0.3.514
road and skidding road0.0.0.0.0.0.0.0.
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.41000.0.0.0.0.4100
total3.970.0.0.0.3.97
GLroad and skidding track0.4710.21000.9471.635
road and skidding road0.0.0.0.0.0.0.0.
road and cable line4.2192.1293.0239.311
road and flight path2.9251.3371.0445.218
no access intended2.3280.6581.4374.220
total9.8124.2196.31520.34
GRroad and skidding track18.9103.62312.41234.87
road and skidding road5.2190.21004.5219.914
road and cable line29.0812.61246.5688.04
road and flight path34.277.51618.01059.65
no access intended7.2170.6583.42411.113
total94.5424.3884.74203.51
JUroad and skidding track10.6120.21001.93112.710
road and skidding road9.6120.5567.61417.77
road and cable line0.21000.0.0.4710.657
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.21000.6582.428
total21.960.94310.51133.43
LUroad and skidding track11.3110.0.1.43712.710
road and skidding road6.1170.0.1.1447.115
road and cable line4.1210.21002.0316.217
road and flight path0.21000.21000.4710.950
no access intended12.1110.21002.42814.710
total33.740.6587.21541.62
NEroad and skidding track13.690.21000.55814.39
road and skidding road8.8130.9502.02911.710
road and cable line0.4700.0.0.0.0.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4380.0.0.5571.932
total24.151.0443.02328.23
NWroad and skidding track0.0.0.31000.4720.759
road and skidding road0.4720.0.0.5681.047
road and cable line1.8350.4721.4353.621
road and flight path0.8560.31000.31001.342
no access intended1.4390.21000.21001.833
total4.4171.2442.8248.46
OWroad and skidding track0.7500.0.0.8511.535
road and skidding road0.7510.0.0.8491.534
road and cable line4.5191.0454.41910.010
road and flight path1.3380.7511.0443.024
no access intended3.0240.0.0.9443.920
total10.3111.7337.91219.84
SGroad and skidding track9.7130.7589.11319.58
road and skidding road5.3190.4714.1209.813
road and cable line3.6231.93310.91316.410
road and flight path5.9181.3415.21912.412
no access intended0.4710.21000.21000.950
total25.084.52129.5659.03
SHroad and skidding track10.360.0.0.46910.76
road and skidding road1.2390.0.0.0.1.239
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended0.21000.0.0.0.0.2100
total11.940.0.0.46912.33
SOroad and skidding track18.070.0.0.94518.97
road and skidding road6.1160.0.1.2447.315
road and cable line2.0320.0.0.21002.230
road and flight path0.0.0.0.0.0.0.0.
no access intended2.9250.21000.6593.722
total29.030.21002.92632.12
SZroad and skidding track1.6350.0.0.8502.428
road and skidding road1.8330.0.1.6353.423
road and cable line3.6231.4377.21412.210
road and flight path0.6580.21000.4711.240
no access intended8.0140.5572.13110.612
total15.792.12912.11029.93
TGroad and skidding track14.670.0.1.23515.86
road and skidding road2.4280.0.0.8503.123
road and cable line0.21000.0.0.4730.658
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total17.740.0.2.42620.12
TIroad and skidding track0.6580.0.1.2411.833
road and skidding road7.2160.4708.61516.210
road and cable line3.5232.23019.4925.18
road and flight path11.5136.81653.6572.04
no access intended19.1100.65815.91135.67
total41.969.91398.73150.61
URroad and skidding track1.2390.0.0.8502.031
road and skidding road0.5570.0.0.21000.750
road and cable line1.5352.3272.8246.613
road and flight path3.1241.1401.2415.418
no access intended4.8190.6581.9317.314
total11.1114.0206.91422.05
VDroad and skidding track46.550.4702.72649.65
road and skidding road13.8110.4711.93116.110
road and cable line3.9223.1257.11614.111
road and flight path4.6211.5372.0318.115
no access intended8.1150.21002.42910.613
total76.935.51816.11098.52
VSroad and skidding track7.2161.8337.01616.010
road and skidding road2.8270.6583.0266.417
road and cable line7.61611.71220.1939.46
road and flight path17.3109.21421.9948.55
no access intended9.2151.8335.11916.011
total44.0625.1857.24126.32
ZGroad and skidding track1.8280.0.0.7462.522
road and skidding road1.2360.0.0.6561.927
road and cable line0.21000.21001.1331.629
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.3170.21002.5205.95
ZHroad and skidding track37.240.0.0.65837.94
road and skidding road5.2190.0.0.4705.718
road and cable line4.3210.0.0.6584.820
road and flight path0.0.0.0.0.0.0.0.
no access intended1.0450.0.0.0.1.045
total47.820.0.1.63549.42
Switzerlandroad and skidding track313.727.81666.25387.72
road and skidding road116.444.62158.66179.73
road and cable line95.5447.96161.43304.72
road and flight path86.1532.78106.54225.33
no access intended112.847.61650.66171.03
total724.51100.64443.221268.40
© WSL, Swiss National Forest Inventory, 18.06.2020 #862409/328740
NFI4
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: canton
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2009/17
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track29.750.0.0.0.29.75
road and skidding road12.2110.0.0.0.12.211
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended5.4180.0.0.0.5.418
total47.520.0.0.0.47.52
AIroad and skidding track1.3340.0.1.5332.820
road and skidding road0.4700.21000.4721.044
road and cable line0.21000.21000.4720.848
road and flight path0.6570.21000.0.0.849
no access intended0.0.0.0.0.0.0.0.
total2.5240.6572.2245.310
ARroad and skidding track3.4210.0.1.9295.314
road and skidding road1.0440.0.0.3691.337
road and cable line1.2380.21000.5551.830
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total5.6120.21002.7228.46
BEroad and skidding track45.560.65814.11260.25
road and skidding road17.0101.04515.71133.87
road and cable line17.1107.81526.0850.95
road and flight path3.2252.4291.4387.117
no access intended20.9101.43811.01333.37
total103.8313.31268.14185.21
BL/BSroad and skidding track10.7110.0.1.83512.49
road and skidding road5.1180.0.1.1446.216
road and cable line0.5710.0.0.8501.341
road and flight path0.0.0.0.0.0.0.0.
no access intended0.7560.0.0.4711.243
total17.060.0.4.12121.13
FRroad and skidding track16.980.0.3.22320.17
road and skidding road3.4240.0.2.2295.618
road and cable line3.0240.5576.3169.812
road and flight path0.4710.21000.0.0.658
no access intended4.6210.3701.9346.917
total28.451.04013.61043.02
GEroad and skidding track3.5140.0.0.0.3.514
road and skidding road0.0.0.0.0.0.0.0.
road and cable line0.0.0.0.0.0.0.0.
road and flight path0.0.0.0.0.0.0.0.
no access intended0.41000.0.0.0.0.4100
total3.970.0.0.0.3.97
GLroad and skidding track0.6580.21000.9471.833
road and skidding road0.0.0.0.0.0.0.0.
road and cable line4.3192.1293.0239.511
road and flight path3.3231.3371.0445.617
no access intended3.1240.6581.4375.118
total11.4114.2196.31521.94
GRroad and skidding track19.3103.62312.91235.87
road and skidding road5.8180.21004.52110.513
road and cable line31.0812.61247.6691.24
road and flight path40.277.91618.61066.65
no access intended7.8160.6583.52311.913
total104.1424.7887.24216.01
JUroad and skidding track10.7120.21002.12913.010
road and skidding road9.6120.5567.61417.77
road and cable line0.21000.0.0.4710.657
road and flight path0.0.0.0.0.0.0.0.
no access intended1.6350.21000.6582.428
total22.160.94310.71133.72
LUroad and skidding track11.3110.0.1.43712.710
road and skidding road6.1170.0.1.1447.115
road and cable line4.3210.21002.0316.417
road and flight path0.21000.21000.4710.950
no access intended12.1110.4702.42814.99
total33.940.8507.21542.02
NEroad and skidding track14.090.21000.55814.79
road and skidding road8.8130.9502.02911.710
road and cable line0.4700.0.0.0.0.470
road and flight path0.0.0.0.0.0.0.0.
no access intended1.4380.0.0.5571.932
total24.651.0443.02328.63
NWroad and skidding track0.0.0.31000.4720.759
road and skidding road0.4720.0.0.5681.047
road and cable line1.8350.4721.4353.621
road and flight path1.0490.31000.31001.539
no access intended1.4390.21000.21001.833
total4.6171.2442.8248.66
OWroad and skidding track0.9450.0.0.8511.733
road and skidding road0.7510.0.0.8491.534
road and cable line4.5191.4384.41910.39
road and flight path1.3380.7511.0443.024
no access intended3.6220.0.1.3374.918
total11.1112.0308.31221.44
SGroad and skidding track10.4130.7589.11320.18
road and skidding road5.9180.4714.12010.513
road and cable line4.2221.93310.91317.010
road and flight path6.9171.3415.21913.412
no access intended0.4710.21000.21000.950
total27.974.52129.5661.93
SHroad and skidding track10.560.0.0.46910.96
road and skidding road1.2390.0.0.0.1.239
road and cable line0.21000.0.0.0.0.2100
road and flight path0.0.0.0.0.0.0.0.
no access intended0.21000.0.0.0.0.2100
total12.140.0.0.46912.53
SOroad and skidding track18.070.0.0.94518.97
road and skidding road6.3160.0.1.2447.515
road and cable line2.0320.0.0.21002.230
road and flight path0.0.0.0.0.0.0.0.
no access intended3.2250.21000.6593.922
total29.530.21002.92632.62
SZroad and skidding track1.6350.0.0.8502.428
road and skidding road1.8330.0.1.6353.423
road and cable line3.8221.4377.21412.410
road and flight path0.6580.21000.4711.240
no access intended8.4140.5572.13111.112
total16.392.12912.11030.53
TGroad and skidding track14.670.0.1.23515.86
road and skidding road2.6260.0.0.8503.422
road and cable line0.21000.0.0.4730.658
road and flight path0.0.0.0.0.0.0.0.
no access intended0.6580.0.0.0.0.658
total17.940.0.2.42620.32
TIroad and skidding track0.6580.0.1.2411.833
road and skidding road7.8160.4708.61516.710
road and cable line3.7232.23019.4925.38
road and flight path12.3126.81653.6572.84
no access intended21.790.65816.51038.87
total46.169.91399.33155.41
URroad and skidding track1.6340.0.0.8502.428
road and skidding road0.5570.0.0.21000.750
road and cable line1.5352.3272.8246.613
road and flight path3.5231.1401.2415.817
no access intended6.2170.6581.9318.714
total13.3104.0206.91424.25
VDroad and skidding track47.550.4702.72650.65
road and skidding road13.8110.4711.93116.110
road and cable line4.3213.1257.11614.511
road and flight path4.8201.5372.0318.315
no access intended8.3150.21002.42910.813
total78.735.51816.110100.32
VSroad and skidding track7.6161.8337.21616.610
road and skidding road4.0220.6583.0267.616
road and cable line8.01511.71220.6940.36
road and flight path21.599.21422.1952.95
no access intended11.4131.8335.31918.510
total52.5525.1858.24135.82
ZGroad and skidding track2.0260.0.0.7462.721
road and skidding road1.2360.0.0.6561.927
road and cable line0.21000.21001.1331.629
road and flight path0.0.0.0.0.0.0.0.
no access intended0.0.0.0.0.0.0.0.
total3.5150.21002.5206.14
ZHroad and skidding track38.040.0.0.65838.64
road and skidding road5.4190.0.0.4705.918
road and cable line4.7200.0.0.6585.219
road and flight path0.0.0.0.0.0.0.0.
no access intended1.0450.0.0.0.1.045
total49.120.0.1.63550.71
Switzerlandroad and skidding track320.327.81667.15395.32
road and skidding road121.144.62158.66184.43
road and cable line101.6448.26163.03312.82
road and flight path100.0433.28107.34240.42
no access intended124.547.71652.06184.23
total767.51101.64448.021317.10
© WSL, Swiss National Forest Inventory, 18.06.2020 #862410/328741
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aroad and skidding track257.4228.3818.3106.51713.1125.020328.72
road and skidding road82.6417.6108.5151.2414.7200.850115.44
road and cable line4.32122.5910.0145.81818.4103.52364.55
road and flight path1.2416.8175.7184.3213.0260.47121.610
no access intended10.4146.1187.2166.61711.51310.41352.16
total356.0181.4449.7524.5850.6520.19582.41
inside perimeterroad and skidding track2.7273.0261.0452.3291.7330.65811.313
road and skidding road0.4711.0451.2410.4711.0450.8504.820
road and cable line0.47111.6137.01611.61210.9134.32145.96
road and flight path0.21001.8332.6285.5191.9322.03213.912
no access intended1.0452.4292.2303.1251.3384.32114.312
total4.72019.81014.01122.9817.01011.91290.24
outside perimeterroad and skidding track26.8822.6914.8119.7135.7189.81489.55
road and skidding road16.71117.2109.1143.6235.0203.02654.56
road and cable line4.12234.2720.1916.91032.4722.39130.14
road and flight path0.0.5.7183.32410.6133.8236.61730.18
no access intended3.7235.5194.22210.8136.91649.3580.34
total51.4685.3451.5551.6553.7591.13384.62
totalroad and skidding track287.0254.0534.1718.5920.5915.411429.52
road and skidding road99.7435.8718.8105.11910.7134.621174.83
road and cable line8.91568.3537.2634.4661.7430.27240.52
road and flight path1.43814.41111.71320.598.8158.91565.65
no access intended15.11114.01213.51220.5919.7963.94146.73
total412.11186.41115.2299.02121.32123.121057.11
© WSL, Swiss National Forest Inventory, 18.06.2020 #862411/328742
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aroad and skidding track268.1232.4721.497.71614.5116.417350.52
road and skidding road85.4418.4109.3142.2306.3171.045122.74
road and cable line4.32125.3811.0137.31622.094.32174.35
road and flight path1.2419.9147.1167.8165.4191.63533.08
no access intended11.2138.91510.01410.31416.91020.3977.65
total370.3194.9458.8535.3765.1533.67658.11
inside perimeterroad and skidding track2.7273.0261.0452.3292.1300.85011.913
road and skidding road0.4711.2411.2410.4711.0451.0455.220
road and cable line0.47112.0137.21611.81211.7124.32147.56
road and flight path0.21001.8332.6285.9182.1302.23014.811
no access intended1.0452.6282.6283.3242.4295.61817.511
total4.72020.6914.61123.7819.4913.81196.84
outside perimeterroad and skidding track27.7824.1916.01010.5136.51711.01395.64
road and skidding road16.91118.01010.7133.6236.2183.62359.06
road and cable line4.12236.0721.1918.21034.4724.58138.23
road and flight path0.0.6.1183.72311.0134.4217.31632.68
no access intended3.7235.9185.41912.6129.71459.8597.14
total52.4690.1457.0555.8461.15106.33422.72
totalroad and skidding track298.4259.4538.4620.5923.0918.210458.02
road and skidding road102.7437.7721.296.11813.5125.619186.93
road and cable line8.91573.3439.4637.2668.1433.17260.02
road and flight path1.43817.81013.51224.7812.01311.11380.45
no access intended15.91117.41018.01026.2829.0885.84192.33
total427.31205.61130.42114.82145.62153.721177.51
© WSL, Swiss National Forest Inventory, 18.06.2020 #862412/328743
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aroad and skidding track268.1232.4721.497.71614.5116.617350.72
road and skidding road85.4418.6109.3142.4296.3171.045123.14
road and cable line4.32125.3811.8127.71623.694.72077.55
road and flight path1.24111.5138.3159.2157.8162.03140.07
no access intended11.21311.91316.61114.21230.0832.07115.94
total370.3199.8467.4541.2682.3446.26707.21
inside perimeterroad and skidding track2.7273.0261.0452.3292.1300.85011.913
road and skidding road0.4711.2411.2410.4711.0451.0455.220
road and cable line0.47112.0137.21612.01211.9124.32147.96
road and flight path0.21001.8332.8276.1182.1302.23015.211
no access intended1.0452.6282.8273.5233.0266.01818.910
total4.72020.6915.01124.3820.2914.21199.04
outside perimeterroad and skidding track27.7824.1916.01010.5136.71711.21396.04
road and skidding road16.91118.01010.7133.6236.2183.82359.26
road and cable line4.12236.0721.3918.21034.6724.58138.73
road and flight path0.0.6.1184.12211.0134.4217.51633.28
no access intended3.7236.1185.81812.61210.71364.95103.84
total52.4690.3458.0555.8462.55111.93430.92
totalroad and skidding track298.4259.4538.4620.5923.2918.610458.62
road and skidding road102.7437.9721.296.31713.5125.818187.53
road and cable line8.91573.3440.3637.9670.1433.57264.02
road and flight path1.43819.41015.31126.3814.41211.61388.45
no access intended15.91120.61025.2830.3743.66102.93238.63
total427.31210.71140.42121.32164.92172.421237.11
© WSL, Swiss National Forest Inventory, 18.06.2020 #862413/328744
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aroad and skidding track265.5231.8821.297.51614.0126.417346.52
road and skidding road84.9418.4108.5152.4296.3171.045121.54
road and cable line4.32125.3811.8127.71623.494.52177.15
road and flight path1.24111.1138.3158.8157.6162.03139.07
no access intended10.61411.31316.01114.01229.0831.07111.94
total366.5197.9465.8540.4680.4444.96696.01
inside perimeterroad and skidding track2.7273.0261.0452.3292.1300.85011.913
road and skidding road0.4711.0451.2410.4711.0451.0455.020
road and cable line0.47112.0137.21612.01211.3134.32147.36
road and flight path0.21001.8332.8276.1182.1302.03215.011
no access intended1.0452.6282.8273.5233.0265.81818.710
total4.72020.4915.01124.3819.6913.81197.84
outside perimeterroad and skidding track27.2823.2915.81010.5136.71711.01394.44
road and skidding road16.71117.6109.9143.6236.0183.82357.66
road and cable line4.12235.4721.1918.21034.6724.38137.73
road and flight path0.0.6.1184.12211.0134.4217.51633.28
no access intended3.7236.1185.61912.61210.31364.45102.64
total51.8688.5456.5555.8461.95111.03425.62
totalroad and skidding track295.4258.0538.0620.3922.8918.210452.82
road and skidding road101.9437.1719.696.31713.3125.818184.13
road and cable line8.91572.7440.2637.9669.4433.17262.12
road and flight path1.43819.01015.31125.9814.21211.41387.25
no access intended15.31120.01024.3930.1742.36101.23233.23
total423.01206.81137.32120.52162.02169.721219.31
© WSL, Swiss National Forest Inventory, 18.06.2020 #862414/328745
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aroad and skidding track265.3231.8821.297.51614.0126.018345.92
road and skidding road84.9418.2108.5152.2306.3171.045121.14
road and cable line4.32125.3811.0137.31621.894.12273.95
road and flight path1.2419.3147.1167.2165.2191.63531.68
no access intended10.6148.1169.61410.11416.11119.31073.95
total366.3192.7457.4534.3763.5532.07646.31
inside perimeterroad and skidding track2.7273.0261.0452.3292.1300.85011.913
road and skidding road0.4711.0451.2410.4711.0451.0455.020
road and cable line0.47112.0137.21611.81211.3134.32147.16
road and flight path0.21001.8332.6285.9182.1302.03214.611
no access intended1.0452.6282.6283.3242.4295.41917.311
total4.72020.4914.61123.7819.01013.41195.84
outside perimeterroad and skidding track27.2823.2915.81010.5136.51710.81394.04
road and skidding road16.71117.6109.9143.6235.8183.42457.06
road and cable line4.12235.4720.9918.21034.4724.38137.33
road and flight path0.0.6.1183.72311.0134.4217.21632.58
no access intended3.7235.9185.21912.6129.31458.9595.64
total51.8688.3455.5555.8460.35104.53416.32
totalroad and skidding track295.2258.0538.0620.3922.6917.610451.82
road and skidding road101.9436.9719.696.11813.1125.419183.13
road and cable line8.91572.7439.2637.2667.5432.77258.22
road and flight path1.43817.21013.51224.1811.81310.71378.65
no access intended15.31116.61117.31026.1827.8883.64186.73
total422.81201.41127.52113.82142.82150.021158.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #862415/328746
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aroad and skidding track266.1232.0721.297.91514.0126.417347.72
road and skidding road84.9418.4108.5152.4296.3171.241121.74
road and cable line4.52125.9812.4127.71623.894.52178.95
road and flight path1.43811.9138.9159.4148.0162.03141.67
no access intended11.61315.41118.21016.61130.8839.47132.04
total368.51103.6469.3444.0683.0453.55721.91
inside perimeterroad and skidding track2.7273.0261.0452.3292.3290.85012.113
road and skidding road0.4711.0451.2410.4711.0451.0455.020
road and cable line0.47112.2127.81512.01211.3134.32148.16
road and flight path0.21001.8333.2256.3172.3292.23016.011
no access intended1.0453.0262.8274.1223.4245.81820.110
total4.72021.0916.01125.1820.4914.011101.24
outside perimeterroad and skidding track27.4823.9916.51010.5136.71711.41396.34
road and skidding road16.91117.8109.9143.6236.0183.82358.06
road and cable line4.12236.0722.9918.21035.2724.98141.33
road and flight path0.0.6.6174.32111.6124.4217.51634.57
no access intended3.7236.7178.11513.41212.41270.94115.14
total52.2691.0461.6457.2464.64118.52445.12
totalroad and skidding track296.2258.9538.6620.7923.0918.610456.02
road and skidding road102.1437.3719.696.31713.3126.018184.73
road and cable line9.11574.2443.1637.9670.4433.77268.32
road and flight path1.63520.21016.51027.3814.81111.61392.04
no access intended16.31125.1929.1834.1746.66116.13267.22
total425.31215.61146.92126.32168.02186.011268.10
© WSL, Swiss National Forest Inventory, 18.06.2020 #862416/328747
NFI3
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aroad and skidding track267.3230.0721.598.11414.1115.917346.92
road and skidding road84.9417.8109.3132.1297.0151.141122.14
road and cable line4.62024.7812.1127.31521.694.02174.45
road and flight path1.1419.5137.0167.9155.4181.83232.77
no access intended11.9129.1149.41311.31217.01020.0978.75
total369.7191.1459.4536.8665.1432.87654.91
inside perimeterroad and skidding track2.4273.0241.0412.5262.1290.75011.712
road and skidding road0.4711.2381.1410.3710.9450.9454.819
road and cable line0.75012.6126.81611.61212.3114.22048.36
road and flight path0.21001.8322.7265.8172.1292.12914.611
no access intended1.1412.9253.0243.7212.3286.31619.29
total4.71921.5914.51023.9819.7914.11198.54
outside perimeterroad and skidding track27.5823.6817.2910.6127.31510.71396.84
road and skidding road16.51018.7910.1133.3236.1173.82258.55
road and cable line4.42036.9620.7917.3933.1624.08136.33
road and flight path0.0.6.1173.52210.9124.3207.61532.47
no access intended3.7226.3165.71711.9129.51359.9497.04
total52.1591.6357.1454.0460.34106.03421.12
totalroad and skidding track297.2156.7539.7621.1823.5817.310455.41
road and skidding road101.7437.7620.595.81714.0115.717185.43
road and cable line9.81374.1439.5636.2667.1432.27259.02
road and flight path1.33817.41013.21124.6811.81211.51279.84
no access intended16.71018.2918.1926.9728.8786.23194.93
total426.61204.21131.02114.72145.12152.921174.50
© WSL, Swiss National Forest Inventory, 18.06.2020 #862417/328748
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