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NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.4700.0.0.0.0.470
21-40%0.7490.0.0.0.0.749
41-60%1.8320.0.0.0.1.832
61-80%3.0250.0.0.0.3.025
over 80%41.930.0.0.0.41.93
total47.720.0.0.0.47.72
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.0.0.2100
41-60%0.0.0.4720.21000.657
61-80%1.0430.0.0.21001.239
over 80%1.3340.21001.9283.416
total2.5240.6572.2245.310
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.5670.0.0.0.0.567
61-80%0.21000.0.0.21000.367
over 80%4.6160.21002.5227.39
total5.3130.21002.7228.16
BE0-20%2.4290.8501.0444.321
21-40%4.3220.8501.4386.517
41-60%7.2161.0455.71813.911
61-80%12.6122.92612.31227.98
over 80%64.647.71647.45119.72
total91.1413.31267.94172.31
BL/BS0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.0.0.0.0.0.0.0.
61-80%0.9480.0.0.0.0.948
over 80%15.470.0.4.12119.54
total16.360.0.4.12120.43
FR0-20%0.7560.0.0.4711.243
21-40%0.7560.0.0.21001.048
41-60%3.5240.5571.6355.618
61-80%3.7230.0.3.1236.816
over 80%18.580.5578.11427.25
total27.251.04013.51041.72
GE0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.41000.0.0.0.0.4100
61-80%0.0.0.0.0.0.0.0.
over 80%3.1130.0.0.0.3.113
total3.750.0.0.0.3.75
GL0-20%0.0.0.0.0.21000.2100
21-40%0.8500.21000.21001.241
41-60%1.3370.5580.5572.426
61-80%1.3370.9451.0443.323
over 80%2.7252.4273.3228.410
total6.2164.0205.21715.46
GR0-20%3.0260.21001.6354.820
21-40%8.9151.4387.91618.210
41-60%15.4113.62315.41134.47
61-80%20.399.81422.3952.45
over 80%24.888.31532.9765.94
total72.4423.3980.14175.82
JU0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.0.0.2100
41-60%0.6570.0.0.4711.043
61-80%4.5190.4711.0445.916
over 80%16.880.5569.11226.54
total22.160.94310.51133.52
LU0-20%0.0.0.0.0.21000.2100
21-40%1.0430.0.0.0.1.043
41-60%1.6350.0.0.0.1.635
61-80%6.6160.0.1.0447.615
over 80%24.460.6585.81730.84
total33.540.6587.01641.22
NE0-20%0.5720.0.0.0.0.572
21-40%0.31000.0.0.21000.572
41-60%2.1310.0.0.0.2.131
61-80%3.4230.21000.5574.021
over 80%18.360.9502.42721.55
total24.551.0443.02328.63
NW0-20%0.0.0.0.0.31000.3100
21-40%0.7570.31000.0.1.047
41-60%0.5710.0.0.0.0.571
61-80%0.8530.0.0.0.0.853
over 80%2.2290.9502.6265.612
total4.3181.2442.8248.27
OW0-20%0.4710.0.0.0.0.471
21-40%1.1410.0.0.3721.435
41-60%2.2280.4710.8493.422
61-80%1.9310.11002.5274.518
over 80%4.3191.1413.8219.210
total9.9111.7337.51319.04
SG0-20%0.4710.0.0.9481.339
21-40%1.7340.21001.0453.026
41-60%2.1310.0.1.8324.022
61-80%3.9230.7584.6219.214
over 80%14.7103.42419.3837.54
total22.884.42127.7654.83
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.0.0.0.0.0.0.0.
61-80%0.0.0.0.0.0.0.0.
over 80%11.940.0.0.46912.33
total11.940.0.0.46912.33
SO0-20%0.21000.0.0.0.0.2100
21-40%0.21000.0.0.0.0.2100
41-60%1.2410.0.0.21001.538
61-80%1.5350.0.0.6572.129
over 80%26.040.21002.32928.53
total29.230.21003.12532.52
SZ0-20%1.0450.21000.6571.933
21-40%2.0310.0.0.21002.230
41-60%2.0310.21001.4373.722
61-80%4.1200.21002.7257.015
over 80%6.5150.9446.71514.27
total15.791.63511.71129.04
TG0-20%0.3730.0.0.0.0.373
21-40%0.21000.0.0.0.0.2100
41-60%0.4730.0.0.0.0.473
61-80%1.1410.0.0.11001.238
over 80%16.060.0.2.32718.34
total18.140.0.2.42620.53
TI0-20%0.8500.4711.7352.927
21-40%3.9220.6582.5276.916
41-60%5.2191.2416.91613.412
61-80%6.2171.93115.01123.28
over 80%10.0145.71861.4477.13
total26.289.71487.53123.42
UR0-20%0.21000.0.0.21000.471
21-40%0.6580.0.0.0.0.658
41-60%1.8320.21000.8502.825
61-80%2.0301.3380.5563.820
over 80%2.8252.1283.8208.710
total7.3143.7215.31616.35
VD0-20%1.6350.0.0.4712.031
21-40%3.0250.0.0.0.3.025
41-60%7.9150.21000.8508.914
61-80%12.6121.0453.02616.610
over 80%51.644.02211.81267.43
total76.835.21916.01097.92
VS0-20%1.0450.21001.0452.230
21-40%8.6151.0453.02612.612
41-60%8.0164.3218.31520.79
61-80%8.1155.61814.91128.67
over 80%9.51412.61228.6750.75
total35.3723.7855.84114.82
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.11000.1100
41-60%0.0.0.0.0.4720.472
61-80%0.3670.0.0.21000.556
over 80%3.0180.21001.6264.810
total3.3170.21002.5205.95
ZH0-20%0.5690.0.0.0.0.569
21-40%0.6570.0.0.21000.850
41-60%0.5690.0.0.0.0.569
61-80%3.0250.0.0.21003.224
over 80%43.130.0.1.34044.42
total47.820.0.1.63549.42
Switzerland0-20%13.6121.8338.61524.19
21-40%39.874.52117.31161.66
41-60%66.4512.51245.56124.44
61-80%103.0425.1985.85214.03
over 80%438.1152.46263.52754.01
total660.9196.44420.721178.01
© WSL, Swiss National Forest Inventory, 18.06.2020 #863450/329781
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest
grid: terrestrial grid NFI3
state2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.3700.0.0.0.0.370
21-40%0.9430.0.0.0.0.943
41-60%1.6320.0.0.0.1.632
61-80%2.7250.0.0.0.2.725
over 80%41.930.0.0.0.41.93
total47.520.0.0.0.47.52
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.0.0.2100
41-60%0.0.0.3720.21000.557
61-80%1.1390.21000.11001.333
over 80%1.1330.21002.1233.414
total2.4230.6482.4205.48
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.4680.0.0.0.0.468
61-80%0.5580.0.0.11000.648
over 80%4.6160.4722.3227.29
total5.5120.4722.4228.36
BE0-20%2.3280.9441.2374.420
21-40%4.4200.7501.8316.916
41-60%8.3140.9455.31814.410
61-80%13.0113.12313.01129.17
over 80%63.948.41448.05120.32
total91.9314.01169.34175.21
BL/BS0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.0.0.0.0.0.0.0.
61-80%0.9490.0.0.21001.144
over 80%15.570.0.3.92119.44
total16.460.0.4.12020.53
FR0-20%1.2380.0.0.8492.029
21-40%0.6560.0.0.21000.848
41-60%3.2230.5571.6335.317
61-80%3.7220.21003.4217.214
over 80%17.570.5578.31326.35
total26.251.13614.3941.62
GE0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.41000.0.0.0.0.4100
61-80%0.0.0.0.0.0.0.0.
over 80%3.2110.0.0.0.3.211
total3.750.0.0.0.3.75
GL0-20%0.3710.0.0.21000.557
21-40%0.9450.21000.21001.338
41-60%1.9300.5580.5572.823
61-80%2.1270.8451.1414.019
over 80%4.8182.4253.42110.69
total10.1113.8195.31619.25
GR0-20%2.9250.21002.2295.218
21-40%11.1131.3387.41519.79
41-60%19.694.32015.61039.46
61-80%26.389.91321.7957.85
over 80%33.678.71434.5676.84
total93.4424.3881.24199.01
JU0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.0.0.2100
41-60%0.6570.0.0.4711.043
61-80%4.5180.3721.0445.815
over 80%17.270.5578.81226.54
total22.560.84310.11133.42
LU0-20%0.0.0.0.0.21000.2100
21-40%1.0390.0.0.0.1.039
41-60%1.7310.0.0.0.1.731
61-80%6.3150.0.0.8447.214
over 80%25.150.5575.41631.14
total34.240.5576.51541.22
NE0-20%0.4720.0.0.0.0.472
21-40%0.21000.0.0.21000.472
41-60%2.2290.0.0.0.2.229
61-80%3.3220.21000.5574.020
over 80%18.460.9442.52521.84
total24.541.1403.22228.83
NW0-20%0.0.0.0.0.21000.2100
21-40%0.6570.21000.0.0.947
41-60%0.4710.0.0.0.0.471
61-80%0.9470.0.0.21001.241
over 80%1.8301.3362.5255.611
total3.8181.6332.9228.36
OW0-20%0.5580.0.0.0.0.558
21-40%1.2380.0.0.3721.533
41-60%2.1280.4711.0433.421
61-80%2.1280.11002.7245.017
over 80%4.7181.0413.8209.510
total10.7111.5337.81220.04
SG0-20%0.4710.0.0.8491.139
21-40%2.4270.21000.9453.522
41-60%3.0240.0.1.8314.819
61-80%4.6200.6584.8199.913
over 80%14.6103.22419.9737.74
total24.974.02128.1657.13
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.0.0.0.0.0.0.0.
61-80%0.31000.0.0.0.0.3100
over 80%11.450.0.0.55712.03
total11.740.0.0.55712.23
SO0-20%0.21000.0.0.0.0.2100
21-40%0.21000.0.0.0.0.2100
41-60%1.0420.0.0.21001.338
61-80%1.6330.0.0.7502.327
over 80%26.240.21002.12828.53
total29.230.21003.12432.42
SZ0-20%0.9450.21000.6571.733
21-40%2.0300.0.0.21002.228
41-60%2.2280.21001.3373.721
61-80%3.9200.21002.8246.914
over 80%6.1150.8447.31314.37
total15.191.43512.21028.73
TG0-20%0.3720.0.0.0.0.372
21-40%0.21000.0.0.0.0.2100
41-60%0.6570.0.0.0.0.657
61-80%1.0410.0.0.11001.138
over 80%15.660.0.2.42418.04
total17.740.0.2.52320.23
TI0-20%1.1410.5581.8323.423
21-40%4.4200.7502.6257.715
41-60%7.4151.0417.51515.910
61-80%8.4142.42615.11025.98
over 80%12.4125.81765.4483.53
total33.6710.41292.43136.52
UR0-20%0.7500.21000.21001.040
21-40%0.7500.21000.21001.040
41-60%1.9290.21001.1413.223
61-80%3.2231.6330.5565.217
over 80%3.9202.3264.01910.29
total10.4114.4185.91520.75
VD0-20%1.6330.0.0.3711.930
21-40%3.0240.21000.21003.423
41-60%8.3140.21000.7509.213
61-80%13.0110.9452.92516.79
over 80%51.344.02112.11167.43
total77.235.21816.21098.62
VS0-20%1.1410.21000.9452.229
21-40%9.4141.8323.02414.211
41-60%8.8144.1217.81520.79
61-80%10.6135.41714.51030.57
over 80%12.81113.11127.8753.64
total42.7624.5754.04121.22
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.11000.1100
41-60%0.0.0.0.0.3720.372
61-80%0.5570.0.0.21000.749
over 80%2.9180.21001.6254.710
total3.4150.21002.4206.05
ZH0-20%0.6560.0.0.0.0.656
21-40%0.8490.0.0.21000.944
41-60%0.6560.0.0.0.0.656
61-80%3.1230.0.0.21003.222
over 80%42.330.0.1.24043.52
total47.420.0.1.53548.92
Switzerland0-20%14.9112.1299.51426.58
21-40%44.365.41817.41067.25
41-60%76.2512.41245.26133.83
61-80%117.5425.8886.54229.83
over 80%453.0154.35269.92777.21
total706.01100.04428.421234.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #863451/329782
NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.5560.0.0.0.0.556
21-40%1.1380.0.0.0.1.138
41-60%1.5350.0.0.0.1.535
61-80%5.1180.0.0.0.5.118
over 80%38.430.0.0.0.38.43
total46.720.0.0.0.46.72
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.21000.471
41-60%0.4710.0.0.21000.657
61-80%0.0.0.4720.4680.848
over 80%1.7280.21001.4313.316
total2.3250.6572.2245.19
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.5710.0.0.0.0.571
41-60%0.0.0.0.0.21000.2100
61-80%1.2390.21000.6601.929
over 80%3.6200.0.2.0255.613
total5.3130.21002.7228.16
BE0-20%1.0440.8501.2403.125
21-40%1.4381.0452.8265.319
41-60%8.7152.2305.51916.410
61-80%22.193.62316.11141.86
over 80%50.355.01939.3694.63
total83.5412.71264.94161.11
BL/BS0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.21000.471
61-80%0.6580.0.0.31000.951
over 80%14.770.0.3.42318.15
total15.760.0.3.92219.64
FR0-20%0.0.0.0.0.0.0.0.
21-40%0.7560.0.0.6581.440
41-60%3.6220.5571.2405.317
61-80%5.2200.3704.91910.512
over 80%16.480.21006.01622.65
total25.951.04012.81039.73
GE0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.0.0.0.0.0.0.0.
61-80%0.0.0.0.0.0.0.0.
over 80%3.1130.0.0.0.3.113
total3.1130.0.0.0.3.113
GL0-20%0.0.0.0.0.4700.470
21-40%0.4710.21000.0.0.557
41-60%0.8500.21000.21001.241
61-80%1.2401.1400.4712.725
over 80%2.5252.4274.1199.09
total4.9183.8205.11713.87
GR0-20%0.6580.0.0.4711.045
21-40%4.7201.2414.12210.014
41-60%14.4115.31919.41039.16
61-80%21.998.61524.1854.65
over 80%12.6125.61821.6839.86
total54.2520.7969.64144.52
JU0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%1.8320.0.0.0.1.832
61-80%3.9210.21001.2405.318
over 80%15.590.7479.31225.55
total21.360.94310.51132.83
LU0-20%0.4700.0.0.4700.848
21-40%0.6570.0.0.0.0.657
41-60%5.0180.21000.4715.517
61-80%10.7120.0.1.83312.511
over 80%15.390.4714.22120.07
total31.940.6586.81639.43
NE0-20%0.31000.0.0.0.0.3100
21-40%0.0.0.0.0.0.0.0.
41-60%2.3280.0.0.21002.527
61-80%4.9180.21001.0456.016
over 80%15.970.9501.72918.56
total23.451.0442.82427.33
NW0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.21000.2100
41-60%0.5710.31000.0.0.856
61-80%1.0470.5710.8562.428
over 80%2.0330.4671.6293.917
total3.5211.2442.6267.29
OW0-20%0.6570.0.0.0.0.657
21-40%0.21000.0.0.4690.657
41-60%2.3270.21000.7503.221
61-80%2.5250.5593.0245.915
over 80%3.5211.0453.2237.811
total9.1121.7337.41318.14
SG0-20%0.4710.0.0.21000.657
21-40%1.9320.21000.9482.925
41-60%2.4300.0.2.1314.521
61-80%5.3190.8514.72010.913
over 80%10.2123.32516.4929.85
total20.194.42124.3748.84
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%1.9310.0.0.0.1.931
over 80%9.870.0.0.46910.27
total11.940.0.0.46912.33
SO0-20%0.21000.0.0.0.0.2100
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%3.3240.0.0.5703.823
over 80%23.850.21002.42826.44
total28.530.21002.92631.62
SZ0-20%0.0.0.0.0.21000.2100
21-40%1.2400.0.0.4711.734
41-60%3.0250.0.0.8493.821
61-80%2.9250.4712.7266.116
over 80%6.3150.9446.51513.77
total13.5101.43710.71125.54
TG0-20%0.7560.0.0.0.0.756
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%2.5250.0.0.4732.924
over 80%12.970.0.2.02815.05
total17.250.0.2.42619.63
TI0-20%0.0.0.0.0.4710.471
21-40%0.21000.4711.1411.733
41-60%2.7271.1412.7276.617
61-80%3.7231.93116.61022.29
over 80%9.7144.62054.8469.03
total16.3108.01575.6399.92
UR0-20%0.0.0.21000.0.0.2100
21-40%0.0.0.3700.21000.658
41-60%1.3360.4710.7572.427
61-80%2.1290.8501.3374.219
over 80%1.3361.8312.4275.614
total4.8183.5214.61812.96
VD0-20%1.7340.0.0.0.1.734
21-40%1.9330.21000.21002.330
41-60%7.5160.21000.6588.415
61-80%16.8101.3383.02621.09
over 80%39.653.32411.41254.34
total67.535.01915.21087.72
VS0-20%0.21000.0.0.21000.471
21-40%3.0261.0452.5296.417
41-60%6.3185.3199.91421.59
61-80%8.5157.91519.7936.16
over 80%6.6178.61419.3934.66
total24.5822.9851.6599.02
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.0.0.0.
41-60%0.11000.0.0.21000.371
61-80%0.8410.0.0.3711.133
over 80%1.9260.21001.6303.714
total2.9190.21002.3225.48
ZH0-20%0.0.0.0.0.0.0.0.
21-40%1.4360.0.0.0.1.436
41-60%1.3400.0.0.0.1.340
61-80%7.9150.0.0.4728.214
over 80%36.540.0.1.24137.84
total47.120.0.1.63548.82
Switzerland0-20%7.1171.0453.62311.713
21-40%20.3104.52113.71238.57
41-60%67.6516.01145.06128.64
61-80%136.0428.78104.14268.82
over 80%354.3239.67216.43610.31
total585.2189.84382.821057.81
© WSL, Swiss National Forest Inventory, 18.06.2020 #863452/329783
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.4700.0.0.0.0.470
21-40%0.7490.0.0.0.0.749
41-60%1.8320.0.0.0.1.832
61-80%2.8260.0.0.0.2.826
over 80%41.930.0.0.0.41.93
total47.520.0.0.0.47.52
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.0.0.2100
41-60%0.0.0.4720.21000.657
61-80%1.0430.0.0.21001.239
over 80%1.3340.21001.9283.416
total2.5240.6572.2245.310
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.5670.0.0.0.0.567
61-80%0.21000.0.0.21000.367
over 80%4.6160.21002.5227.39
total5.3130.21002.7228.16
BE0-20%3.0260.8501.0444.920
21-40%4.5210.8501.6356.917
41-60%9.6141.0455.71816.310
61-80%14.0113.12512.31229.57
over 80%66.647.51647.45121.52
total97.8313.31268.14179.21
BL/BS0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.0.0.0.0.0.0.0.
61-80%0.9480.0.0.0.0.948
over 80%15.770.0.4.12119.84
total16.660.0.4.12120.73
FR0-20%1.1440.0.0.4711.537
21-40%0.7560.0.0.21001.048
41-60%3.3250.5571.6355.418
61-80%3.7230.0.3.3227.015
over 80%19.070.5578.01427.55
total27.851.04013.61042.42
GE0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.41000.0.0.0.0.4100
61-80%0.21000.0.0.0.0.2100
over 80%3.1130.0.0.0.3.113
total3.970.0.0.0.3.97
GL0-20%0.4710.0.0.21000.657
21-40%0.8500.21000.21001.241
41-60%2.3280.5580.7493.621
61-80%1.9311.2401.2404.319
over 80%4.4192.4273.92010.79
total9.8124.2196.31520.34
GR0-20%2.8270.21001.8334.820
21-40%11.1131.4388.11520.69
41-60%20.6104.22217.41042.26
61-80%26.9810.61323.7961.25
over 80%33.177.91533.7774.64
total94.5424.3884.74203.51
JU0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.0.0.2100
41-60%0.4690.0.0.4710.848
61-80%4.5190.4711.0445.916
over 80%16.880.5569.11226.54
total21.960.94310.51133.43
LU0-20%0.0.0.0.0.21000.2100
21-40%1.0430.0.0.0.1.043
41-60%1.6350.0.0.0.1.635
61-80%6.6160.0.1.0447.615
over 80%24.660.6586.01731.24
total33.740.6587.21541.62
NE0-20%0.5720.0.0.0.0.572
21-40%0.31000.0.0.21000.572
41-60%1.9320.0.0.0.1.932
61-80%3.2240.21000.5573.921
over 80%18.360.9502.32721.55
total24.151.0443.02328.23
NW0-20%0.0.0.0.0.31000.3100
21-40%0.7570.31000.0.1.047
41-60%0.5710.0.0.0.0.571
61-80%0.8530.0.0.0.0.853
over 80%2.4280.9502.6265.812
total4.4171.2442.8248.46
OW0-20%0.4710.0.0.0.0.471
21-40%1.1410.0.0.3721.435
41-60%2.2280.4711.0453.621
61-80%1.9310.11002.5274.518
over 80%4.7191.1414.1209.99
total10.3111.7337.91219.84
SG0-20%0.4710.0.0.9481.339
21-40%2.1310.21000.9503.225
41-60%3.1250.0.1.8325.019
61-80%4.3220.7584.8209.814
over 80%15.1103.62421.0839.74
total25.084.52129.5659.03
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.0.0.0.0.0.0.0.
61-80%0.0.0.0.0.0.0.0.
over 80%11.940.0.0.46912.33
total11.940.0.0.46912.33
SO0-20%0.21000.0.0.0.0.2100
21-40%0.21000.0.0.0.0.2100
41-60%1.2410.0.0.21001.538
61-80%1.5350.0.0.4691.931
over 80%25.940.21002.32928.33
total29.030.21002.92632.12
SZ0-20%1.0450.21000.6571.933
21-40%2.0310.0.0.21002.230
41-60%2.0310.21001.4373.722
61-80%4.1200.21002.7257.014
over 80%6.5151.5357.21415.27
total15.792.12912.11029.93
TG0-20%0.3730.0.0.0.0.373
21-40%0.21000.0.0.0.0.2100
41-60%0.4730.0.0.0.0.473
61-80%0.9450.0.0.11001.041
over 80%15.960.0.2.32718.14
total17.740.0.2.42620.12
TI0-20%2.2300.6583.5246.318
21-40%5.4190.6582.9258.914
41-60%8.4151.0458.31517.710
61-80%11.5131.93117.21030.67
over 80%14.4115.91866.9487.23
total41.969.91398.73150.61
UR0-20%0.7500.21000.21001.140
21-40%0.9450.0.0.3701.337
41-60%2.0300.21001.6353.722
61-80%3.2241.3380.5565.018
over 80%4.3202.3274.31910.910
total11.1114.0206.91422.05
VD0-20%1.6350.0.0.6582.230
21-40%3.0250.0.0.0.3.025
41-60%8.1150.21000.8509.114
61-80%12.6121.0453.02616.610
over 80%51.644.42111.71267.63
total76.935.51816.11098.52
VS0-20%1.2410.4711.0452.628
21-40%9.7141.6353.42414.611
41-60%9.8144.5218.71523.19
61-80%10.4145.61815.31131.37
over 80%13.01213.01128.8754.74
total44.0625.1857.24126.32
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.11000.1100
41-60%0.0.0.0.0.4720.472
61-80%0.3670.0.0.21000.556
over 80%3.0180.21001.6264.810
total3.3170.21002.5205.95
ZH0-20%0.5690.0.0.0.0.569
21-40%0.6570.0.0.21000.850
41-60%0.5690.0.0.0.0.569
61-80%3.0250.0.0.21003.224
over 80%43.130.0.1.34044.42
total47.820.0.1.63549.42
Switzerland0-20%16.9112.42910.81430.28
21-40%45.675.12018.71069.35
41-60%80.7513.11250.36144.23
61-80%120.4426.4890.24237.03
over 80%460.9153.76273.12787.71
total724.51100.64443.221268.40
© WSL, Swiss National Forest Inventory, 18.06.2020 #863453/329784
NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.5560.0.0.0.0.556
21-40%1.1380.0.0.0.1.138
41-60%1.5350.0.0.0.1.535
61-80%5.3180.0.0.0.5.318
over 80%39.030.0.0.0.39.03
total47.520.0.0.0.47.52
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.21000.471
41-60%0.6570.0.0.21000.849
61-80%0.0.0.4720.4680.848
over 80%1.7280.21001.4313.316
total2.5240.6572.2245.310
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.5710.0.0.0.0.571
41-60%0.0.0.0.0.21000.2100
61-80%1.2390.21000.6601.929
over 80%3.6200.0.2.0255.613
total5.3130.21002.7228.16
BE0-20%1.6350.8501.2403.723
21-40%3.2251.0453.1257.316
41-60%13.1122.2305.91821.29
61-80%25.983.82316.71046.46
over 80%53.955.41841.36100.63
total97.8313.31268.14179.21
BL/BS0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.21000.471
61-80%0.6580.0.0.31000.951
over 80%15.670.0.3.62219.24
total16.660.0.4.12120.73
FR0-20%0.21000.0.0.0.0.2100
21-40%1.3400.0.0.6582.032
41-60%3.8220.5571.6355.917
61-80%5.5190.3705.11810.912
over 80%17.080.21006.21623.45
total27.851.04013.61042.42
GE0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%0.41000.0.0.0.0.4100
over 80%3.3130.0.0.0.3.313
total3.970.0.0.0.3.97
GL0-20%0.0.0.0.0.4700.470
21-40%1.3370.21000.0.1.535
41-60%1.7330.4710.8502.925
61-80%2.7261.3370.4714.519
over 80%4.0202.4274.71811.18
total9.8124.2196.31520.34
GR0-20%1.4380.21000.8502.429
21-40%10.6141.4387.11719.110
41-60%26.186.71723.6956.45
61-80%35.379.81427.8872.94
over 80%21.196.21725.3852.65
total94.5424.3884.74203.51
JU0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%2.0300.0.0.0.2.030
61-80%4.3200.21001.2405.617
over 80%15.590.7479.31225.55
total21.960.94310.51133.43
LU0-20%0.6570.0.0.6561.239
21-40%0.6570.0.0.0.0.657
41-60%5.9160.21000.4716.515
61-80%10.9120.0.1.83312.711
over 80%15.790.4714.42020.57
total33.740.6587.21541.62
NE0-20%0.31000.0.0.0.0.3100
21-40%0.0.0.0.0.0.0.0.
41-60%2.3280.0.0.21002.527
61-80%5.4170.21001.0456.615
over 80%16.170.9501.82818.86
total24.151.0443.02328.23
NW0-20%0.0.0.0.0.0.0.0.
21-40%0.31000.0.0.21000.572
41-60%0.8560.31000.0.1.147
61-80%1.2420.5710.8562.627
over 80%2.1310.4671.8294.316
total4.4171.2442.8248.46
OW0-20%0.6570.0.0.0.0.657
21-40%0.4700.0.0.4690.849
41-60%3.1230.21000.9454.118
61-80%2.5250.5593.1236.114
over 80%3.7211.0453.5218.210
total10.3111.7337.91219.84
SG0-20%0.6570.0.0.21000.849
21-40%2.7270.21001.1433.921
41-60%3.8230.0.3.0266.817
61-80%7.1160.8515.81813.811
over 80%10.7123.52419.3833.55
total25.084.52129.5659.03
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%1.9310.0.0.0.1.931
over 80%9.870.0.0.46910.27
total11.940.0.0.46912.33
SO0-20%0.21000.0.0.0.0.2100
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%3.5240.0.0.5704.022
over 80%24.250.21002.42826.74
total29.030.21002.92632.12
SZ0-20%0.0.0.0.0.21000.2100
21-40%2.0310.0.0.4712.528
41-60%3.8220.0.1.0444.819
61-80%3.1240.4713.2246.715
over 80%6.7141.7337.31415.76
total15.792.12912.11029.93
TG0-20%0.7560.0.0.0.0.756
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%2.7240.0.0.4733.122
over 80%13.270.0.2.02815.25
total17.740.0.2.42620.12
TI0-20%1.8330.0.1.4383.225
21-40%5.0200.6582.7278.215
41-60%9.8142.1307.01618.810
61-80%10.1142.52722.5935.17
over 80%15.3114.82065.2485.23
total41.969.91398.73150.61
UR0-20%0.6580.21000.0.0.850
21-40%0.4710.3700.4721.241
41-60%2.3280.4711.6354.220
61-80%5.1181.1401.9318.114
over 80%2.7262.0303.0247.812
total11.1114.0206.91422.05
VD0-20%1.7340.0.0.0.1.734
21-40%3.1250.21000.21003.524
41-60%9.6140.21001.04410.813
61-80%19.291.3383.22523.78
over 80%43.453.82211.61258.83
total76.935.51816.11098.52
VS0-20%1.0450.0.0.8501.833
21-40%6.2181.2413.12610.514
41-60%12.8126.11811.01330.07
61-80%13.5128.51421.5943.66
over 80%10.5139.21420.7940.46
total44.0625.1857.24126.32
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.0.0.0.
41-60%0.11000.0.0.21000.371
61-80%1.0350.0.0.3711.329
over 80%2.2230.21001.8274.112
total3.3170.21002.5205.95
ZH0-20%0.0.0.0.0.0.0.0.
21-40%1.4360.0.0.0.1.436
41-60%1.3400.0.0.0.1.340
61-80%7.9150.0.0.4728.214
over 80%37.240.0.1.24138.44
total47.820.0.1.63549.42
Switzerland0-20%12.3131.2415.81819.310
21-40%41.375.12019.51065.95
41-60%106.3419.31058.76184.33
61-80%176.4331.98118.84327.12
over 80%388.2243.17240.52671.81
total724.51100.64443.221268.40
© WSL, Swiss National Forest Inventory, 18.06.2020 #863454/329785
NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.5560.0.0.0.0.556
21-40%1.1380.0.0.0.1.138
41-60%1.5350.0.0.0.1.535
61-80%5.3180.0.0.0.5.318
over 80%39.030.0.0.0.39.03
total47.520.0.0.0.47.52
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.21000.471
41-60%0.6570.0.0.21000.849
61-80%0.0.0.4720.4680.848
over 80%1.7280.21001.4313.316
total2.5240.6572.2245.310
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.5710.0.0.0.0.571
41-60%0.0.0.0.0.21000.2100
61-80%1.2390.21000.6601.929
over 80%3.6200.0.2.0255.613
total5.3130.21002.7228.16
BE0-20%1.0440.8501.2403.125
21-40%2.2301.0453.1256.317
41-60%10.7132.2305.51918.410
61-80%23.993.82316.51044.26
over 80%51.555.21940.3697.03
total89.3413.11266.54168.91
BL/BS0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.21000.471
61-80%0.6580.0.0.31000.951
over 80%15.370.0.3.62219.04
total16.360.0.4.12120.43
FR0-20%0.0.0.0.0.0.0.0.
21-40%1.2430.0.0.6581.834
41-60%3.8220.5571.4385.717
61-80%5.2200.3705.11810.712
over 80%16.880.21006.21623.25
total27.051.04013.41041.43
GE0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%0.41000.0.0.0.0.4100
over 80%3.1130.0.0.0.3.113
total3.750.0.0.0.3.75
GL0-20%0.0.0.0.0.4700.470
21-40%0.9440.21000.0.1.140
41-60%1.2400.4710.4711.931
61-80%1.3371.1400.4712.924
over 80%2.5252.4274.1199.09
total6.0164.0205.21715.26
GR0-20%1.2410.0.0.6581.833
21-40%8.2151.2416.31815.711
41-60%20.3106.61721.6948.46
61-80%25.589.01426.7861.15
over 80%14.6116.01823.7844.35
total69.8522.7979.04171.52
JU0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%2.0300.0.0.0.2.030
61-80%4.3200.21001.2405.617
over 80%15.590.7479.31225.55
total21.960.94310.51133.43
LU0-20%0.4700.0.0.6561.042
21-40%0.6570.0.0.0.0.657
41-60%5.4170.21000.4715.916
61-80%10.9120.0.1.83312.711
over 80%15.590.4714.22120.17
total32.840.6587.01640.42
NE0-20%0.31000.0.0.0.0.3100
21-40%0.0.0.0.0.0.0.0.
41-60%2.3280.0.0.21002.527
61-80%5.4170.21001.0456.615
over 80%16.170.9501.72918.66
total24.151.0442.82428.03
NW0-20%0.0.0.0.0.0.0.0.
21-40%0.31000.0.0.21000.572
41-60%0.8560.31000.0.1.147
61-80%1.2420.5710.8562.627
over 80%2.0330.4671.8294.117
total4.3181.2442.8248.27
OW0-20%0.6570.0.0.0.0.657
21-40%0.4700.0.0.4690.849
41-60%2.9230.21000.7503.819
61-80%2.5250.5593.1236.114
over 80%3.5211.0453.2237.811
total9.9111.7337.51319.04
SG0-20%0.4710.0.0.21000.657
21-40%2.1310.21001.1433.423
41-60%3.2260.0.2.8276.018
61-80%6.3180.8515.21912.412
over 80%10.3123.32517.2930.95
total22.484.42126.5753.33
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%1.9310.0.0.0.1.931
over 80%9.870.0.0.46910.27
total11.940.0.0.46912.33
SO0-20%0.21000.0.0.0.0.2100
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%3.5240.0.0.5704.022
over 80%24.250.21002.42826.74
total29.030.21002.92632.12
SZ0-20%0.0.0.0.0.21000.2100
21-40%2.0310.0.0.4712.528
41-60%3.6220.0.1.0444.619
61-80%3.1240.4713.2246.715
over 80%6.5151.2416.91514.57
total15.391.63511.71128.54
TG0-20%0.7560.0.0.0.0.756
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%2.7240.0.0.4733.122
over 80%13.270.0.2.02815.25
total17.740.0.2.42620.12
TI0-20%0.4710.0.0.8501.241
21-40%3.1250.6582.3296.018
41-60%5.6181.9314.82012.312
61-80%5.2192.32919.4926.98
over 80%11.2134.82058.9474.83
total25.689.51486.23121.32
UR0-20%0.0.0.21000.0.0.2100
21-40%0.21000.3700.4720.944
41-60%1.7320.4711.2403.323
61-80%3.1231.0441.3375.417
over 80%1.8321.8312.4276.014
total6.8153.7215.31615.86
VD0-20%1.7340.0.0.0.1.734
21-40%3.1250.21000.21003.524
41-60%8.6140.21000.8509.614
61-80%18.691.3383.22523.18
over 80%42.853.52411.41257.74
total74.735.21915.61095.62
VS0-20%0.8500.0.0.4711.241
21-40%5.4191.0453.1269.514
41-60%10.2145.71810.61326.68
61-80%10.3138.11520.9939.46
over 80%7.6158.81420.7937.16
total34.3723.7855.84113.82
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.0.0.0.
41-60%0.11000.0.0.21000.371
61-80%1.0350.0.0.3711.329
over 80%2.2230.21001.6304.013
total3.3170.21002.3225.76
ZH0-20%0.0.0.0.0.0.0.0.
21-40%1.4360.0.0.0.1.436
41-60%1.3400.0.0.0.1.340
61-80%7.9150.0.0.4728.214
over 80%37.240.0.1.24138.44
total47.820.0.1.63549.42
Switzerland0-20%8.7151.0454.62114.312
21-40%33.984.72018.31056.96
41-60%87.6518.61052.16158.33
61-80%151.5330.18112.54294.22
over 80%367.5241.07226.92635.51
total649.2195.44414.521159.11
© WSL, Swiss National Forest Inventory, 18.06.2020 #863455/329786
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.4700.0.0.0.0.470
21-40%0.7490.0.0.0.0.749
41-60%1.8320.0.0.0.1.832
61-80%3.0250.0.0.0.3.025
over 80%41.930.0.0.0.41.93
total47.720.0.0.0.47.72
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.0.0.2100
41-60%0.0.0.4720.21000.657
61-80%1.0430.0.0.21001.239
over 80%1.3340.21001.9283.416
total2.5240.6572.2245.310
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.5670.0.0.0.0.567
61-80%0.21000.0.0.21000.367
over 80%4.6160.21002.5227.39
total5.3130.21002.7228.16
BE0-20%3.4240.8501.0445.319
21-40%4.7210.8501.6357.116
41-60%9.6141.0455.71816.310
61-80%14.4113.12512.91230.57
over 80%67.247.71648.05122.92
total99.4313.51269.34182.21
BL/BS0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.0.0.0.0.0.0.0.
61-80%0.9480.0.0.0.0.948
over 80%15.770.0.4.12119.84
total16.660.0.4.12120.73
FR0-20%1.1440.0.0.4711.537
21-40%0.7560.0.0.21001.048
41-60%3.5240.5571.6355.618
61-80%3.7230.0.3.3227.015
over 80%19.070.5578.11427.65
total28.051.04013.71042.82
GE0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.41000.0.0.0.0.4100
61-80%0.21000.0.0.0.0.2100
over 80%3.1130.0.0.0.3.113
total3.970.0.0.0.3.97
GL0-20%0.4710.0.0.21000.657
21-40%0.8500.21000.21001.241
41-60%2.3280.5580.7493.621
61-80%1.9311.2401.2404.319
over 80%4.6192.4273.92010.99
total10.0124.2196.31520.54
GR0-20%3.2250.21001.8335.219
21-40%11.7131.4388.11521.29
41-60%20.6104.42117.41042.46
61-80%27.5810.61323.9962.05
over 80%33.778.31533.9775.84
total96.7424.9885.04206.71
JU0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.0.0.2100
41-60%0.6570.0.0.4711.043
61-80%4.5190.4711.0445.916
over 80%16.880.5569.11226.54
total22.160.94310.51133.52
LU0-20%0.0.0.0.0.21000.2100
21-40%1.2400.0.0.0.1.240
41-60%1.8330.0.0.0.1.833
61-80%6.6160.0.1.0447.615
over 80%25.060.6586.01731.64
total34.540.6587.21542.42
NE0-20%0.5720.0.0.0.0.572
21-40%0.31000.0.0.21000.572
41-60%2.1310.0.0.0.2.131
61-80%3.4230.21000.5574.021
over 80%18.360.9502.52621.75
total24.551.0443.22228.73
NW0-20%0.0.0.0.0.31000.3100
21-40%0.7570.31000.0.1.047
41-60%0.5710.0.0.0.0.571
61-80%0.8530.0.0.0.0.853
over 80%2.4280.9502.6265.812
total4.4171.2442.8248.46
OW0-20%0.4710.0.0.0.0.471
21-40%1.1410.0.0.3721.435
41-60%2.2280.6571.0453.821
61-80%1.9310.11002.5274.518
over 80%4.7191.1414.1209.99
total10.3111.9317.91220.03
SG0-20%0.4710.0.0.9481.339
21-40%2.1310.21001.0453.324
41-60%3.4240.0.1.8325.219
61-80%4.5210.7585.02010.213
over 80%15.1103.62421.7740.44
total25.484.52130.5660.43
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.0.0.0.0.0.0.0.
61-80%0.0.0.0.0.0.0.0.
over 80%11.940.0.0.46912.33
total11.940.0.0.46912.33
SO0-20%0.21000.0.0.0.0.2100
21-40%0.21000.0.0.0.0.2100
41-60%1.2410.0.0.21001.538
61-80%1.5350.0.0.6572.129
over 80%26.040.21002.32928.53
total29.230.21003.12532.52
SZ0-20%1.0450.21000.6571.933
21-40%2.0310.0.0.21002.230
41-60%2.0310.21001.4373.722
61-80%4.3200.21002.7257.214
over 80%6.8151.5357.41415.67
total16.192.12912.31030.53
TG0-20%0.3730.0.0.0.0.373
21-40%0.21000.0.0.0.0.2100
41-60%0.4730.0.0.0.0.473
61-80%1.1410.0.0.11001.238
over 80%16.060.0.2.32718.34
total18.140.0.2.42620.53
TI0-20%2.2300.6583.7236.517
21-40%5.6180.6582.9259.114
41-60%9.0141.2418.31518.510
61-80%11.5131.93117.41030.87
over 80%14.6115.91867.1487.53
total42.9610.11399.33152.41
UR0-20%0.7500.21000.21001.140
21-40%0.9450.0.0.3701.337
41-60%2.2290.21001.6353.921
61-80%3.4241.3380.5565.218
over 80%4.5202.3274.31911.19
total11.7114.0206.91422.65
VD0-20%1.8330.0.0.6582.429
21-40%3.0250.0.0.0.3.025
41-60%8.7140.21000.8509.714
61-80%12.8121.0453.02616.810
over 80%52.444.42112.01268.73
total78.835.51816.410100.71
VS0-20%1.2410.4711.0452.628
21-40%10.0141.6353.42415.011
41-60%10.0144.5218.91423.59
61-80%10.8135.61815.31131.77
over 80%13.01213.01129.0754.94
total45.0625.1857.64127.72
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.11000.1100
41-60%0.0.0.0.0.4720.472
61-80%0.3670.0.0.21000.556
over 80%3.0180.21001.6264.810
total3.3170.21002.5205.95
ZH0-20%0.5690.0.0.0.0.569
21-40%0.6570.0.0.21000.850
41-60%0.5690.0.0.0.0.569
61-80%3.0250.0.0.21003.224
over 80%43.130.0.1.34044.42
total47.820.0.1.63549.42
Switzerland0-20%18.0112.42911.01431.48
21-40%47.265.12018.91071.15
41-60%83.3513.71250.56147.63
61-80%123.2426.4891.64241.23
over 80%464.4154.36275.92794.61
total736.11101.84448.021285.80
© WSL, Swiss National Forest Inventory, 18.06.2020 #863456/329787
NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.5560.0.0.0.0.556
21-40%1.1380.0.0.0.1.138
41-60%1.5350.0.0.0.1.535
61-80%5.3180.0.0.0.5.318
over 80%39.030.0.0.0.39.03
total47.520.0.0.0.47.52
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.21000.471
41-60%0.6570.0.0.21000.849
61-80%0.0.0.4720.4680.848
over 80%1.7280.21001.4313.316
total2.5240.6572.2245.310
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.5710.0.0.0.0.571
41-60%0.0.0.0.0.21000.2100
61-80%1.4360.21000.6602.127
over 80%3.7190.0.2.0255.712
total5.6120.21002.7228.46
BE0-20%1.6350.8501.2403.723
21-40%4.2221.0453.1258.315
41-60%13.3122.2305.71821.29
61-80%25.983.82316.51046.26
over 80%53.555.21940.6699.43
total98.6313.11267.14178.81
BL/BS0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.21000.471
61-80%0.6580.0.0.31000.951
over 80%15.770.0.3.62219.44
total16.760.0.4.12120.83
FR0-20%0.0.0.0.0.0.0.0.
21-40%1.2430.0.0.6581.834
41-60%3.8220.5571.6355.917
61-80%5.4190.3705.11810.912
over 80%17.080.21006.21623.45
total27.451.04013.61042.03
GE0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%0.41000.0.0.0.0.4100
over 80%3.1130.0.0.0.3.113
total3.750.0.0.0.3.75
GL0-20%0.0.0.0.0.4700.470
21-40%1.5350.21000.0.1.733
41-60%2.2300.4710.4712.925
61-80%2.5271.3370.4714.320
over 80%4.0202.4274.11910.59
total10.3124.2195.21719.85
GR0-20%2.4290.21000.8503.424
21-40%14.2121.2416.91722.49
41-60%27.386.81723.6957.65
61-80%34.279.41428.0871.64
over 80%21.696.21724.5852.45
total99.7423.7983.94207.42
JU0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%2.0300.0.0.0.2.030
61-80%4.4190.21001.2405.817
over 80%15.590.7479.51225.75
total22.160.94310.71133.72
LU0-20%0.4700.0.0.6561.042
21-40%0.6570.0.0.0.0.657
41-60%5.8170.21000.4716.316
61-80%11.1120.0.1.83312.911
over 80%15.590.4714.22120.17
total33.340.6587.01641.02
NE0-20%0.31000.0.0.0.0.3100
21-40%0.0.0.0.0.0.0.0.
41-60%2.3280.0.0.21002.527
61-80%5.6170.21001.0456.815
over 80%16.470.9501.72918.96
total24.651.0442.82428.53
NW0-20%0.0.0.0.0.0.0.0.
21-40%0.31000.0.0.21000.572
41-60%0.8560.31000.0.1.147
61-80%1.2420.5710.8562.627
over 80%2.1310.4671.8294.317
total4.5181.2442.8248.47
OW0-20%0.8490.0.0.21001.044
21-40%0.8490.0.0.4691.240
41-60%3.1230.3720.7504.118
61-80%2.5250.7503.3236.514
over 80%3.7211.0453.5218.210
total10.9112.0308.21321.04
SG0-20%0.4710.0.0.21000.657
21-40%3.1250.21001.1434.420
41-60%5.1200.0.3.0268.116
61-80%8.0160.8515.21914.111
over 80%10.7123.32517.9931.95
total27.374.42127.4759.03
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%2.1300.0.0.0.2.130
over 80%9.870.0.0.46910.27
total12.140.0.0.46912.53
SO0-20%0.21000.0.0.0.0.2100
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%3.5240.0.0.5704.022
over 80%24.650.21002.42827.24
total29.530.21002.92632.62
SZ0-20%0.0.0.0.0.21000.2100
21-40%2.3300.0.0.4712.727
41-60%3.6220.0.1.0444.619
61-80%3.1240.4713.2246.715
over 80%6.7151.3377.11415.17
total15.791.73311.91029.34
TG0-20%0.7560.0.0.0.0.756
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%2.7240.0.0.4733.122
over 80%13.470.0.2.02815.45
total17.940.0.2.42620.32
TI0-20%1.4380.0.1.2412.628
21-40%5.4190.6582.7278.615
41-60%8.6152.1306.01816.710
61-80%8.6152.52721.5932.67
over 80%13.7124.82062.8481.23
total37.679.91394.23141.82
UR0-20%0.4710.21000.0.0.658
21-40%1.4380.3700.4722.230
41-60%1.9310.4711.4373.721
61-80%5.1191.1401.9318.114
over 80%2.1292.0302.4276.613
total11.0124.0206.11521.16
VD0-20%1.7340.0.0.0.1.734
21-40%3.5240.21000.21003.922
41-60%10.2130.21000.85011.213
61-80%19.091.3383.22523.58
over 80%43.053.52411.61258.14
total77.435.21915.81098.42
VS0-20%1.0450.0.0.6581.635
21-40%8.4151.2413.52413.112
41-60%13.8125.91810.91330.67
61-80%12.8128.11521.3942.26
over 80%10.5139.11420.7940.26
total46.5624.3857.04127.82
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.0.0.0.
41-60%0.11000.0.0.21000.371
61-80%1.2330.0.0.3711.528
over 80%2.2230.21001.6304.013
total3.5150.21002.3226.05
ZH0-20%0.0.0.0.0.0.0.0.
21-40%1.4360.0.0.0.1.436
41-60%1.5370.0.0.0.1.537
61-80%8.2140.0.0.4728.614
over 80%37.840.0.1.24139.03
total48.920.0.1.63550.51
Switzerland0-20%12.3131.2415.61919.110
21-40%51.064.92019.71075.65
41-60%109.2419.31056.36184.83
61-80%174.9331.38117.24323.52
over 80%387.3241.87233.52662.51
total734.7198.54432.321265.61
© WSL, Swiss National Forest Inventory, 18.06.2020 #863457/329788
NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.5560.0.0.0.0.556
21-40%1.1380.0.0.0.1.138
41-60%1.5350.0.0.0.1.535
61-80%5.3180.0.0.0.5.318
over 80%39.030.0.0.0.39.03
total47.520.0.0.0.47.52
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.21000.471
41-60%0.6570.0.0.21000.849
61-80%0.0.0.4720.4680.848
over 80%1.7280.21001.4313.316
total2.5240.6572.2245.310
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.5710.0.0.0.0.571
41-60%0.0.0.0.0.21000.2100
61-80%1.4360.21000.6602.127
over 80%3.7190.0.2.0255.712
total5.6120.21002.7228.46
BE0-20%1.4370.8501.2403.523
21-40%3.2251.0453.1257.316
41-60%11.9132.2305.71819.89
61-80%25.183.82316.51045.46
over 80%52.555.21940.6698.43
total94.2313.11267.14174.31
BL/BS0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.21000.471
61-80%0.6580.0.0.31000.951
over 80%15.770.0.3.62219.44
total16.760.0.4.12120.83
FR0-20%0.0.0.0.0.0.0.0.
21-40%1.2430.0.0.6581.834
41-60%3.8220.5571.4385.717
61-80%5.4190.3705.11810.912
over 80%17.080.21006.21623.45
total27.451.04013.41041.83
GE0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%0.41000.0.0.0.0.4100
over 80%3.1130.0.0.0.3.113
total3.750.0.0.0.3.75
GL0-20%0.0.0.0.0.4700.470
21-40%1.1400.21000.0.1.337
41-60%1.6350.4710.4712.328
61-80%1.7321.3370.4713.522
over 80%2.7242.4274.1199.29
total7.1154.2195.21716.66
GR0-20%2.0320.0.0.6582.628
21-40%11.2131.2416.71719.210
41-60%21.896.81722.6951.25
61-80%26.189.21427.8863.15
over 80%16.2116.01824.1846.35
total77.4423.1981.94182.51
JU0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%2.0300.0.0.0.2.030
61-80%4.4190.21001.2405.817
over 80%15.590.7479.51225.75
total22.160.94310.71133.72
LU0-20%0.4700.0.0.6561.042
21-40%0.6570.0.0.0.0.657
41-60%5.6170.21000.4716.116
61-80%11.1120.0.1.83312.911
over 80%15.590.4714.22120.17
total33.240.6587.01640.82
NE0-20%0.31000.0.0.0.0.3100
21-40%0.0.0.0.0.0.0.0.
41-60%2.3280.0.0.21002.527
61-80%5.6170.21001.0456.815
over 80%16.470.9501.72918.96
total24.651.0442.82428.53
NW0-20%0.0.0.0.0.0.0.0.
21-40%0.31000.0.0.21000.572
41-60%0.8560.31000.0.1.147
61-80%1.2420.5710.8562.627
over 80%2.1310.4671.8294.317
total4.5181.2442.8248.47
OW0-20%0.8490.0.0.0.0.849
21-40%0.8490.0.0.4691.240
41-60%2.9230.3720.7503.919
61-80%2.5250.7503.3236.514
over 80%3.5211.0453.5218.010
total10.5112.0308.01320.44
SG0-20%0.4710.0.0.21000.657
21-40%2.5280.21001.1433.821
41-60%4.3220.0.3.0267.316
61-80%7.0170.8515.21913.111
over 80%10.5123.32517.9931.75
total24.784.42127.4756.53
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%2.1300.0.0.0.2.130
over 80%9.870.0.0.46910.27
total12.140.0.0.46912.53
SO0-20%0.21000.0.0.0.0.2100
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%3.5240.0.0.5704.022
over 80%24.650.21002.42827.24
total29.530.21002.92632.62
SZ0-20%0.0.0.0.0.21000.2100
21-40%2.0310.0.0.4712.528
41-60%3.6220.0.1.0444.619
61-80%3.1240.4713.2246.715
over 80%6.7151.3377.11415.17
total15.591.73311.91029.14
TG0-20%0.7560.0.0.0.0.756
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%2.7240.0.0.4733.122
over 80%13.470.0.2.02815.45
total17.940.0.2.42620.32
TI0-20%0.8500.0.0.8501.635
21-40%3.7230.6582.5286.817
41-60%6.2171.9315.01913.112
61-80%6.4172.32920.6929.37
over 80%12.4124.82059.5476.63
total29.589.51488.33127.42
UR0-20%0.0.0.21000.0.0.2100
21-40%0.4710.3700.4721.241
41-60%1.7320.4711.4373.522
61-80%3.3231.0441.5345.716
over 80%1.8321.8312.4276.014
total7.2143.7215.71616.55
VD0-20%1.7340.0.0.0.1.734
21-40%3.5240.21000.21003.922
41-60%9.2140.21000.85010.213
61-80%19.091.3383.22523.58
over 80%43.053.52411.61258.14
total76.435.21915.81097.42
VS0-20%1.0450.0.0.6581.635
21-40%7.2171.2413.52411.913
41-60%12.4125.71810.91329.08
61-80%11.1138.11521.3940.66
over 80%8.4158.81420.7937.96
total40.2623.9857.04121.12
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.0.0.0.
41-60%0.11000.0.0.21000.371
61-80%1.2330.0.0.3711.528
over 80%2.2230.21001.6304.013
total3.5150.21002.3226.05
ZH0-20%0.0.0.0.0.0.0.0.
21-40%1.4360.0.0.0.1.436
41-60%1.5370.0.0.0.1.537
61-80%8.2140.0.0.4728.614
over 80%37.840.0.1.24139.03
total48.920.0.1.63550.51
Switzerland0-20%10.7141.0454.82016.511
21-40%42.074.92019.31066.25
41-60%95.6418.91054.16168.63
61-80%158.7330.78115.64305.02
over 80%375.3241.27229.82646.31
total682.2196.84423.721202.71
© WSL, Swiss National Forest Inventory, 18.06.2020 #863458/329789
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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 SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%3.3251.4381.0450.6581.8330.4718.615
21-40%5.4194.1223.6234.2223.7231.04521.910
41-60%13.21210.1146.2175.51910.4132.13047.56
61-80%31.3817.91010.9136.31714.2116.31786.95
over 80%302.8147.9628.077.91520.6910.314417.51
total356.0181.4449.7524.5850.6520.19582.41
inside perimeter0-20%0.0.0.8500.0.0.21000.21000.21001.438
21-40%0.0.1.0450.4711.0450.8500.4713.624
41-60%0.21002.0321.2414.1223.2250.85011.413
61-80%0.8504.0223.0265.6186.7173.82223.99
over 80%3.72312.0129.41411.9126.0186.71749.76
total4.72019.81014.01122.9817.01011.91290.24
outside perimeter0-20%0.0.1.9331.8330.8501.2411.3416.917
21-40%0.21002.1311.2412.6285.0201.33812.413
41-60%1.2417.4164.1227.51611.6134.82036.77
61-80%4.72018.6108.11513.51115.81116.01176.65
over 80%45.3655.4536.4627.2720.1967.64251.92
total51.4685.3451.5551.6553.7591.13384.62
total0-20%3.3254.1222.8261.6353.2251.93316.911
21-40%5.6197.2165.2197.7169.5142.72737.97
41-60%14.61119.51011.51317.21025.287.71595.74
61-80%36.8740.5621.9925.4836.7626.18187.53
over 80%351.81115.2373.8347.1546.7584.63719.21
total412.11186.41115.2299.02121.32123.121057.11
© WSL, Swiss National Forest Inventory, 18.06.2020 #863459/329790
NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.5560.0.0.0.0.556
21-40%1.1380.0.0.0.1.138
41-60%1.5350.0.0.0.1.535
61-80%5.3180.0.0.0.5.318
over 80%39.030.0.0.0.39.03
total47.520.0.0.0.47.52
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.21000.471
41-60%0.6570.0.0.21000.849
61-80%0.0.0.4720.4680.848
over 80%1.7280.21001.4313.316
total2.5240.6572.2245.310
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.5710.0.0.0.0.571
41-60%0.0.0.0.0.21000.2100
61-80%1.2390.21000.6601.929
over 80%3.6200.0.2.0255.613
total5.3130.21002.7228.16
BE0-20%1.2400.8501.2403.324
21-40%3.0261.0453.1257.116
41-60%11.9132.2305.51919.610
61-80%24.783.82316.51045.06
over 80%52.555.21940.3698.03
total93.4413.11266.54172.91
BL/BS0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.21000.471
61-80%0.6580.0.0.31000.951
over 80%15.370.0.3.62219.04
total16.360.0.4.12120.43
FR0-20%0.0.0.0.0.0.0.0.
21-40%1.2430.0.0.6581.834
41-60%3.8220.5571.6355.917
61-80%5.2200.3705.11810.712
over 80%16.880.21006.21623.25
total27.051.04013.61041.63
GE0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%0.41000.0.0.0.0.4100
over 80%3.1130.0.0.0.3.113
total3.750.0.0.0.3.75
GL0-20%0.0.0.0.0.4700.470
21-40%1.3370.21000.0.1.535
41-60%1.6350.4710.4712.328
61-80%2.5271.1400.4714.120
over 80%3.8212.4274.11910.39
total9.3124.0205.21718.55
GR0-20%1.4380.21000.6582.230
21-40%10.4141.2416.51718.110
41-60%24.996.61722.8954.35
61-80%33.879.21426.8869.84
over 80%20.796.21724.1851.05
total91.1423.3980.94195.42
JU0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%2.0300.0.0.0.2.030
61-80%4.3200.21001.2405.617
over 80%15.590.7479.31225.55
total21.960.94310.51133.43
LU0-20%0.4700.0.0.6561.042
21-40%0.6570.0.0.0.0.657
41-60%5.8170.21000.4716.316
61-80%10.9120.0.1.83312.711
over 80%15.590.4714.22120.17
total33.140.6587.01640.82
NE0-20%0.31000.0.0.0.0.3100
21-40%0.0.0.0.0.0.0.0.
41-60%2.3280.0.0.21002.527
61-80%5.4170.21001.0456.615
over 80%16.170.9501.72918.66
total24.151.0442.82428.03
NW0-20%0.0.0.0.0.0.0.0.
21-40%0.31000.0.0.21000.572
41-60%0.8560.31000.0.1.147
61-80%1.2420.5710.8562.627
over 80%2.0330.4671.8294.117
total4.3181.2442.8248.27
OW0-20%0.6570.0.0.0.0.657
21-40%0.4700.0.0.4690.849
41-60%3.1230.21000.7504.019
61-80%2.5250.5593.1236.114
over 80%3.7211.0453.2238.011
total10.3111.7337.51319.44
SG0-20%0.4710.0.0.21000.657
21-40%2.5280.21001.1433.722
41-60%3.8230.0.3.0266.817
61-80%7.1160.8515.21913.211
over 80%10.5123.32517.2931.15
total24.484.42126.7755.53
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%1.9310.0.0.0.1.931
over 80%9.870.0.0.46910.27
total11.940.0.0.46912.33
SO0-20%0.21000.0.0.0.0.2100
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%3.5240.0.0.5704.022
over 80%24.250.21002.42826.74
total29.030.21002.92632.12
SZ0-20%0.0.0.0.0.21000.2100
21-40%2.0310.0.0.4712.528
41-60%3.6220.0.1.0444.619
61-80%3.1240.4713.2246.715
over 80%6.5151.2416.91514.57
total15.391.63511.71128.54
TG0-20%0.7560.0.0.0.0.756
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%2.7240.0.0.4733.122
over 80%13.270.0.2.02815.25
total17.740.0.2.42620.12
TI0-20%0.8500.0.1.2412.032
21-40%4.4210.6582.7277.616
41-60%8.2152.1305.61815.911
61-80%7.6162.52720.8930.97
over 80%13.1124.82061.9479.83
total34.179.91392.23136.22
UR0-20%0.21000.21000.0.0.471
21-40%0.4710.3700.4721.241
41-60%1.9310.4711.4373.721
61-80%4.7191.1401.9317.714
over 80%2.1292.0302.4276.613
total9.3134.0206.11519.56
VD0-20%1.7340.0.0.0.1.734
21-40%3.1250.21000.21003.524
41-60%9.6140.21000.85010.613
61-80%18.691.3383.22523.18
over 80%42.853.52411.41257.74
total75.835.21915.61096.62
VS0-20%0.8500.0.0.4711.241
21-40%6.0181.2413.12610.314
41-60%11.6135.91810.61328.28
61-80%12.0138.11520.9941.06
over 80%10.1139.11420.7939.86
total40.4624.3855.84120.62
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.0.0.0.
41-60%0.11000.0.0.21000.371
61-80%1.0350.0.0.3711.329
over 80%2.2230.21001.6304.013
total3.3170.21002.3225.76
ZH0-20%0.0.0.0.0.0.0.0.
21-40%1.4360.0.0.0.1.436
41-60%1.3400.0.0.0.1.340
61-80%7.9150.0.0.4728.214
over 80%37.240.0.1.24138.44
total47.820.0.1.63549.42
Switzerland0-20%9.7141.2415.02015.911
21-40%39.774.92018.91063.55
41-60%100.2418.91054.76173.93
61-80%168.2330.78114.74313.52
over 80%381.1241.67230.42653.11
total698.8197.44423.721219.81
© WSL, Swiss National Forest Inventory, 18.06.2020 #863460/329791
NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG0-20%0.5560.0.0.0.0.556
21-40%1.1380.0.0.0.1.138
41-60%1.5350.0.0.0.1.535
61-80%5.3180.0.0.0.5.318
over 80%39.030.0.0.0.39.03
total47.520.0.0.0.47.52
AI0-20%0.0.0.0.0.0.0.0.
21-40%0.21000.0.0.21000.471
41-60%0.6570.0.0.21000.849
61-80%0.0.0.4720.4680.848
over 80%1.7280.21001.4313.316
total2.5240.6572.2245.310
AR0-20%0.0.0.0.0.0.0.0.
21-40%0.5710.0.0.0.0.571
41-60%0.0.0.0.0.21000.2100
61-80%1.4360.21000.6602.127
over 80%3.7190.0.2.0255.712
total5.6120.21002.7228.46
BE0-20%2.0310.8501.2404.122
21-40%4.4211.0453.1258.515
41-60%15.1112.2305.91823.29
61-80%27.183.82316.71047.56
over 80%55.255.41841.36101.83
total103.8313.31268.14185.21
BL/BS0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.21000.471
61-80%0.6580.0.0.31000.951
over 80%16.060.0.3.62219.64
total17.060.0.4.12121.13
FR0-20%0.21000.0.0.0.0.2100
21-40%1.5370.0.0.6582.231
41-60%3.8220.5571.6355.917
61-80%5.7190.3705.11811.112
over 80%17.280.21006.21623.65
total28.451.04013.61043.02
GE0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%0.41000.0.0.0.0.4100
over 80%3.3130.0.0.0.3.313
total3.970.0.0.0.3.97
GL0-20%0.0.0.0.0.4700.470
21-40%1.5350.21000.0.1.733
41-60%2.4280.4710.8503.523
61-80%2.9251.3370.4714.718
over 80%4.6192.4274.71811.78
total11.4114.2196.31521.94
GR0-20%2.4290.21001.0453.623
21-40%14.8111.4387.31623.69
41-60%28.987.11624.4960.45
61-80%35.879.81429.0874.54
over 80%22.296.21725.5853.95
total104.1424.7887.24216.01
JU0-20%0.21000.0.0.0.0.2100
21-40%0.0.0.0.0.0.0.0.
41-60%2.0300.0.0.0.2.030
61-80%4.4190.21001.2405.817
over 80%15.590.7479.51225.75
total22.160.94310.71133.72
LU0-20%0.6570.0.0.6561.239
21-40%0.6570.0.0.0.0.657
41-60%5.9160.21000.4716.515
61-80%11.1120.0.1.83312.911
over 80%15.790.6584.42020.77
total33.940.8507.21542.02
NE0-20%0.31000.0.0.0.0.3100
21-40%0.0.0.0.0.0.0.0.
41-60%2.3280.0.0.21002.527
61-80%5.6170.21001.0456.815
over 80%16.470.9501.82819.16
total24.651.0443.02328.63
NW0-20%0.0.0.0.0.0.0.0.
21-40%0.31000.0.0.21000.572
41-60%0.8560.31000.0.1.147
61-80%1.2420.5710.8562.627
over 80%2.3290.4671.8294.515
total4.6171.2442.8248.66
OW0-20%0.8490.0.0.21001.044
21-40%0.8490.0.0.4691.240
41-60%3.3220.3720.9454.518
61-80%2.5250.7503.3236.514
over 80%3.7211.0453.5218.210
total11.1112.0308.31221.44
SG0-20%0.6570.0.0.21000.849
21-40%3.3240.21001.1434.620
41-60%5.1200.0.3.0268.116
61-80%8.0160.8515.81814.711
over 80%10.9123.52419.3833.75
total27.974.52129.5661.93
SH0-20%0.0.0.0.0.0.0.0.
21-40%0.0.0.0.0.0.0.0.
41-60%0.21000.0.0.0.0.2100
61-80%2.1300.0.0.0.2.130
over 80%9.870.0.0.46910.27
total12.140.0.0.46912.53
SO0-20%0.21000.0.0.0.0.2100
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%3.5240.0.0.5704.022
over 80%24.650.21002.42827.24
total29.530.21002.92632.62
SZ0-20%0.0.0.0.0.21000.2100
21-40%2.5280.0.0.4712.926
41-60%3.8220.0.1.0444.819
61-80%3.1240.4713.2246.715
over 80%6.9141.7337.31415.97
total16.392.12912.11030.53
TG0-20%0.7560.0.0.0.0.756
21-40%0.5680.0.0.0.0.568
41-60%0.6580.0.0.0.0.658
61-80%2.7240.0.0.4733.122
over 80%13.470.0.2.02815.45
total17.940.0.2.42620.32
TI0-20%2.4290.0.1.4383.823
21-40%6.2180.6582.9269.614
41-60%10.9132.1307.01620.09
61-80%11.4132.52722.7936.67
over 80%15.3114.82065.4485.43
total46.169.91399.33155.41
UR0-20%0.6580.21000.0.0.850
21-40%1.4380.3700.4722.230
41-60%2.7260.4711.6354.619
61-80%5.9171.1401.9318.913
over 80%2.7262.0303.0247.812
total13.3104.0206.91424.25
VD0-20%1.7340.0.0.0.1.734
21-40%3.7230.21000.21004.122
41-60%10.2130.21001.04411.412
61-80%19.691.3383.22524.18
over 80%43.653.82211.61259.03
total78.735.51816.110100.32
VS0-20%1.2410.0.0.8502.032
21-40%9.2151.2413.72314.212
41-60%16.3116.11811.31333.67
61-80%14.7118.51421.7945.05
over 80%11.1139.21420.7941.06
total52.5525.1858.24135.82
ZG0-20%0.0.0.0.0.11000.1100
21-40%0.0.0.0.0.0.0.0.
41-60%0.11000.0.0.21000.371
61-80%1.2330.0.0.3711.528
over 80%2.2230.21001.8274.112
total3.5150.21002.5206.14
ZH0-20%0.0.0.0.0.0.0.0.
21-40%1.4360.0.0.0.1.436
41-60%1.5370.0.0.0.1.537
61-80%8.4140.0.0.4728.814
over 80%37.840.0.1.24139.03
total49.120.0.1.63550.71
Switzerland0-20%14.7121.2416.21822.19
21-40%54.465.12020.51080.05
41-60%119.0419.91059.76198.53
61-80%184.7332.18120.64337.32
over 80%394.8243.37241.12679.21
total767.51101.64448.021317.10
© WSL, Swiss National Forest Inventory, 18.06.2020 #863461/329792
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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 SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%3.9232.4291.6351.0452.4291.04512.413
21-40%6.4186.5175.2198.2157.3165.11938.87
41-60%14.41113.3127.2167.81613.9126.01862.75
61-80%33.1720.1913.3127.91617.8108.215100.54
over 80%308.4150.3630.179.31422.1911.713431.81
total366.3192.7457.4534.3763.5532.07646.31
inside perimeter0-20%0.0.0.8500.21000.21000.21000.4711.833
21-40%0.0.1.0450.4711.0451.2410.8504.421
41-60%0.21002.0321.4384.3213.2251.43812.413
61-80%0.8504.0223.2255.6187.9153.82225.39
over 80%3.72312.6129.41412.6126.4177.11651.76
total4.72020.4914.61123.7819.01013.41195.84
outside perimeter0-20%0.0.2.3302.0311.0451.2412.1318.515
21-40%0.21002.1311.6353.0266.8173.52317.211
41-60%1.2418.0165.3198.31513.7128.11544.66
61-80%4.72019.6109.11414.91117.61019.11084.95
over 80%45.7656.4537.6628.6721.0971.74261.02
total51.8688.3455.5555.8460.35104.53416.32
total0-20%3.9235.5193.8222.2303.8233.42422.79
21-40%6.6179.6147.21612.21315.4119.31460.46
41-60%15.81123.3913.91120.5930.8715.511119.84
61-80%38.6743.7625.6828.4743.4631.27210.83
over 80%357.81119.3377.1350.5549.5590.43744.61
total422.81201.41127.52113.82142.82150.021158.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #863462/329793
NFI3
forest area
avalanches SilvaProtect · main type of harvest
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
cantonmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGskidder36.040.0.0.0.36.04
forwarder10.9110.0.0.0.10.911
mobile tower yarder0.0.0.0.0.0.0.0.
cable crane0.5570.0.0.0.0.557
helicopter0.0.0.0.0.0.0.0.
others0.0.0.0.0.0.0.0.
total47.520.0.0.0.47.52
AIskidder1.9260.0.2.0233.914
forwarder0.0.0.0.0.21000.2100
mobile tower yarder0.21000.0.0.0.0.2100
cable crane0.0.0.3720.0.0.372
helicopter0.4710.3690.21000.942
others0.0.0.0.0.0.0.0.
total2.4230.6482.4205.48
ARskidder3.5200.0.2.2245.613
forwarder1.2370.0.0.11001.334
mobile tower yarder0.0.0.0.0.11000.1100
cable crane0.4570.4720.0.0.845
helicopter0.4680.0.0.0.0.468
others0.0.0.0.0.0.0.0.
total5.5120.4722.4228.36
BEskidder54.953.02439.0696.83
forwarder14.3110.5583.92118.79
mobile tower yarder6.1173.32310.81220.29
cable crane4.5193.8219.61317.99
helicopter7.7153.0244.81915.510
others0.3710.4711.2381.930
total87.8314.01169.34171.11
BL/BSskidder11.790.0.2.42814.17
forwarder4.0210.0.0.7494.719
mobile tower yarder0.4720.0.0.7501.241
cable crane0.21000.0.0.21000.470
helicopter0.0.0.0.0.0.0.0.
others0.0.0.0.0.0.0.0.
total16.460.0.4.12020.53
FRskidder16.580.21006.81523.56
forwarder4.7190.21001.3386.116
mobile tower yarder1.9300.5573.5215.816
cable crane1.4350.0.1.9303.322
helicopter1.5350.3700.7502.626
others0.21000.0.0.0.0.2100
total26.251.13614.1941.42
GEskidder1.1510.0.0.0.1.151
forwarder2.6210.0.0.0.2.621
mobile tower yarder0.0.0.0.0.0.0.0.
cable crane0.0.0.0.0.0.0.0.
helicopter0.0.0.0.0.0.0.0.
others0.0.0.0.0.0.0.0.
total3.750.0.0.0.3.75
GLskidder2.3270.11001.2373.621
forwarder0.0.0.0.0.21000.2100
mobile tower yarder1.0401.0400.5582.524
cable crane1.3350.8451.7313.919
helicopter2.2271.9301.2345.316
others0.0.0.0.0.3710.371
total6.8143.8195.11615.76
GRskidder22.384.02115.01041.46
forwarder3.9210.0.2.3286.117
mobile tower yarder8.0154.61913.81126.48
cable crane19.0910.51329.4758.85
helicopter18.594.42017.51040.36
others0.5580.21001.2381.930
total72.2423.6879.14175.01
JUskidder20.760.8438.71230.23
forwarder1.4350.0.0.7502.128
mobile tower yarder0.0.0.0.0.4700.470
cable crane0.0.0.0.0.4700.470
helicopter0.21000.0.0.0.0.2100
others0.21000.0.0.0.0.2100
total22.560.84310.11133.42
LUskidder26.850.0.4.31931.14
forwarder1.3350.0.0.21001.533
mobile tower yarder2.4260.21001.3353.920
cable crane2.9230.3710.3713.620
helicopter0.4700.0.0.3710.749
others0.0.0.0.0.0.0.0.
total33.840.5576.51540.82
NEskidder22.250.7502.92325.84
forwarder1.5330.21000.0.1.631
mobile tower yarder0.3710.21000.0.0.557
cable crane0.21000.0.0.0.0.2100
helicopter0.21000.0.0.0.0.2100
others0.21000.0.0.3710.557
total24.541.1403.22228.83
NWskidder0.8500.4720.7481.928
forwarder0.0.0.0.0.0.0.0.
mobile tower yarder0.6570.21000.8501.732
cable crane0.9480.6581.2402.725
helicopter1.3380.4710.21001.930
others0.21000.0.0.0.0.2100
total3.8181.6332.9228.36
OWskidder3.0230.21001.5344.818
forwarder0.0.0.0.0.21000.2100
mobile tower yarder2.6260.3721.9304.817
cable crane1.5350.5581.4353.322
helicopter3.2220.5592.8246.514
others0.0.0.0.0.0.0.0.
total10.3111.5337.81219.64
SGskidder17.391.83115.4934.55
forwarder0.7500.21001.5352.428
mobile tower yarder0.3700.0.2.1282.426
cable crane2.2291.1417.01510.412
helicopter2.2290.6571.7334.520
others0.21000.21000.3700.750
total23.084.02128.0654.93
SHskidder4.2170.0.0.5574.715
forwarder7.5100.0.0.0.7.510
mobile tower yarder0.0.0.0.0.0.0.0.
cable crane0.0.0.0.0.0.0.0.
helicopter0.0.0.0.0.0.0.0.
others0.0.0.0.0.0.0.0.
total11.740.0.0.55712.23
SOskidder14.580.0.1.73216.38
forwarder13.390.0.0.85014.19
mobile tower yarder0.9450.0.0.4721.238
cable crane0.0.0.21000.21000.471
helicopter0.0.0.0.0.0.0.0.
others0.4670.0.0.0.0.467
total29.230.21003.12432.42
SZskidder6.6150.0.4.02010.611
forwarder0.21000.0.0.21000.471
mobile tower yarder2.4260.0.3.0235.416
cable crane3.0231.0404.0208.013
helicopter2.9240.4710.8444.120
others0.0.0.0.0.21000.2100
total15.191.43512.21028.73
TGskidder13.070.0.2.02715.06
forwarder4.7160.0.0.5585.215
mobile tower yarder0.0.0.0.0.0.0.0.
cable crane0.0.0.0.0.0.0.0.
helicopter0.0.0.0.0.0.0.0.
others0.0.0.0.0.0.0.0.
total17.740.0.2.52320.23
TIskidder5.9171.23811.01218.19
forwarder2.0300.21002.7264.919
mobile tower yarder0.5580.21003.8224.520
cable crane1.9301.93017.8921.68
helicopter15.1106.71651.6573.44
others0.21000.0.0.4710.558
total25.6810.11387.33123.02
URskidder1.8310.3711.3373.421
forwarder0.0.0.0.0.0.0.0.
mobile tower yarder0.0.0.3710.9441.237
cable crane0.5581.9280.8473.221
helicopter4.5181.5341.9298.012
others0.4710.0.0.4710.749
total7.3134.1195.21616.65
VDskidder58.142.2298.21468.53
forwarder12.9110.0.1.23714.110
mobile tower yarder1.6331.6333.3236.516
cable crane1.4350.9452.1294.320
helicopter2.3280.6581.5354.420
others0.0.0.0.0.0.0.0.
total76.335.21816.21097.82
VSskidder10.5133.02414.61028.17
forwarder1.8310.0.0.7502.527
mobile tower yarder4.8198.71411.91225.47
cable crane2.5273.6215.91712.011
helicopter16.9108.61420.2945.75
others0.21000.0.0.7500.945
total36.8623.9854.04114.72
ZGskidder2.6200.0.1.2363.914
forwarder0.4710.0.0.0.0.471
mobile tower yarder0.21000.21001.0361.431
cable crane0.21000.0.0.21000.471
helicopter0.0.0.0.0.0.0.0.
others0.0.0.0.0.0.0.0.
total3.4150.21002.4206.05
ZHskidder30.850.0.0.65831.35
forwarder13.3100.0.0.210013.510
mobile tower yarder2.1300.0.0.4712.427
cable crane0.7500.0.0.4701.141
helicopter0.0.0.0.0.0.0.0.
others0.5570.0.0.0.0.557
total47.420.0.1.53548.92
Switzerlandskidder389.2218.010147.13554.31
forwarder102.541.23817.410121.23
mobile tower yarder36.4721.2960.65118.24
cable crane45.3627.8884.44157.43
helicopter79.9529.28105.54214.62
others3.4230.7505.0199.214
total656.8198.14420.021174.90
© WSL, Swiss National Forest Inventory, 18.06.2020 #863463/329794
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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 SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%3.9233.2251.6351.0452.6281.24113.612
21-40%6.4186.7175.2198.6157.5165.31939.87
41-60%15.51113.9127.6168.01613.9126.61765.65
61-80%34.1720.3913.7128.11518.4108.215102.94
over 80%310.4150.7630.779.51422.7912.212436.21
total370.3194.9458.8535.3765.1533.67658.11
inside perimeter0-20%0.0.0.8500.21000.21000.21000.4711.833
21-40%0.0.1.0450.4711.0451.2410.8504.421
41-60%0.21002.0321.4384.3213.2251.63512.612
61-80%0.8504.0223.2255.6187.9153.82225.39
over 80%3.72312.8129.41412.6126.8167.21652.56
total4.72020.6914.61123.7819.4913.81196.84
outside perimeter0-20%0.0.2.3302.0311.0451.2412.1318.515
21-40%0.21002.1311.8333.0266.8173.52317.411
41-60%1.2418.2155.3198.31513.8128.51545.46
61-80%4.92020.0109.51414.91117.81019.5986.55
over 80%46.1657.6538.4628.6721.4972.74264.82
total52.4690.1457.0555.8461.15106.33422.72
total0-20%3.9236.3173.8222.2304.0223.62323.99
21-40%6.6179.8147.41612.61215.6119.51461.66
41-60%16.81124.1914.31120.7931.0716.710123.64
61-80%39.8744.3626.4828.6744.2631.67214.83
over 80%360.21121.1378.6350.7550.9592.23753.61
total427.31205.61130.42114.82145.62153.721177.51
© WSL, Swiss National Forest Inventory, 18.06.2020 #863464/329795
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: forest
grid: terrestrial grid NFI3
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago79.62.429.611.442.89.154.22.157.55.565.03.854.615.322.65.418.91.756.94.355.93.472.33.919.49.147.66.750.64.261.05.959.13.840.15.375.93.910.72.023.35.149.32.418.02.455.411.573.62.747.40.7
11-20 years ago10.21.97.16.923.27.514.01.518.74.314.22.822.712.718.35.113.31.515.63.216.02.616.23.237.611.29.73.914.02.924.45.120.83.115.23.914.33.311.52.18.83.519.31.98.31.716.99.016.02.314.80.6
21-30 years ago4.51.333.312.418.47.09.21.212.93.65.71.80.0.13.74.213.41.517.43.414.72.59.72.610.67.311.04.110.62.67.73.313.92.810.03.28.82.716.02.411.83.912.81.614.62.221.99.96.81.611.40.5
31-40 years ago3.01.014.29.35.03.46.21.02.41.71.31.00.0.7.13.410.11.34.61.85.41.60.70.70.0.7.53.62.71.40.0.2.61.38.33.00.0.9.71.98.93.56.91.210.51.90.0.2.81.05.80.4
41-50 years ago1.50.80.0.2.52.52.00.64.32.42.61.39.19.16.43.28.31.22.41.31.00.70.0.0.0.5.43.02.21.35.43.11.81.05.82.50.0.7.61.78.63.43.00.812.72.10.0.0.80.64.10.3
over 50 years ago1.10.715.89.98.05.414.41.54.32.411.22.513.69.931.85.936.02.13.11.57.01.81.01.032.310.418.85.219.83.31.51.51.91.120.74.41.01.044.53.238.75.88.71.435.93.05.95.80.0.16.40.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterless than 10 years ago..0.0.0.0.37.15.4..56.818.9..34.09.521.63.424.420.432.927.252.920.340.417.349.616.428.99.4..0.0.34.314.2..5.63.231.39.226.38.021.53.4100.0...25.21.8
11-20 years ago..27.123.438.733.528.45.0..14.213.3..7.55.118.63.317.916.90.0.30.718.410.29.90.0.15.67.3..0.0.28.013.8..6.53.115.07.135.58.713.22.80.0...17.31.6
21-30 years ago..27.123.461.333.512.63.7..14.913.6..8.86.014.73.035.921.134.327.50.0.13.112.30.0.12.66.9..0.0.8.38.0..11.64.13.63.515.66.510.52.60.0...12.21.4
31-40 years ago..45.825.40.0.8.53.1..14.213.3..12.36.89.02.421.818.932.927.20.0.0.0.7.57.417.27.9..0.0.9.49.0..13.84.620.38.23.63.510.52.60.0...10.71.3
41-50 years ago..0.0.0.0.5.92.6..0.0...8.35.73.41.50.0.0.0.0.0.13.112.311.610.94.44.3..0.0.10.39.7..14.94.68.65.86.44.49.52.40.0...7.31.1
over 50 years ago..0.0.0.0.7.63.0..0.0...29.39.532.73.90.0.0.0.16.415.023.315.131.315.421.28.5..100.0.9.69.1..47.56.521.28.412.76.034.84.00.0...27.31.8
total..100.0.100.0.100.0...100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0...100.0.100.0...100.0.100.0.100.0.100.0.100.0...100.0.
outside perimeterless than 10 years ago..60.111.758.112.448.92.550.011.043.85.5..37.58.223.41.951.66.646.28.074.410.061.512.849.77.738.33.7100.0.57.112.150.56.053.212.712.01.431.77.641.95.018.52.278.011.276.115.031.40.9
11-20 years ago..19.78.419.110.117.31.918.18.415.43.9..21.36.718.31.814.14.617.96.215.78.420.511.016.45.821.73.10.0.6.15.917.54.532.312.15.91.022.77.018.54.112.31.87.37.30.0.14.60.7
21-30 years ago..8.07.517.19.212.41.722.38.913.43.8..14.26.014.31.615.44.715.45.80.0.7.06.70.0.11.32.40.0.11.57.911.63.914.59.48.21.20.0.8.32.89.01.614.79.713.612.610.90.6
31-40 years ago..4.94.90.0.6.11.25.35.211.53.4..0.0.6.91.27.03.410.24.80.0.0.0.4.23.06.51.90.0.4.74.64.02.30.0.7.21.112.95.57.62.89.01.60.0.0.0.6.90.5
41-50 years ago..0.0.5.75.66.21.24.24.26.82.7..7.34.15.61.11.81.72.72.60.0.0.0.5.33.53.01.30.0.13.78.98.13.20.0.8.21.15.63.85.22.312.81.90.0.10.39.96.90.5
over 50 years ago..7.27.00.0.9.01.40.0.9.13.3..19.66.831.42.110.24.07.64.29.96.710.97.324.46.619.23.00.0.6.96.68.43.30.0.58.52.127.17.418.54.038.42.70.0.0.0.29.30.9
total..100.0.100.0.100.0.100.0.100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago79.62.439.68.645.47.450.81.656.04.957.73.154.615.329.44.221.11.254.53.554.03.171.83.637.57.648.64.842.82.762.85.858.63.644.13.873.13.711.21.127.23.946.82.118.91.565.78.273.72.740.00.5
11-20 years ago10.21.915.05.822.76.016.41.218.63.814.62.222.712.717.03.416.01.115.22.616.22.416.73.026.97.111.53.118.02.123.34.919.32.917.02.916.53.37.50.914.03.120.01.711.01.212.66.015.52.214.90.4
21-30 years ago4.51.321.57.319.95.910.81.014.83.48.51.80.0.12.83.013.91.017.32.715.02.38.32.29.84.75.72.211.11.77.33.213.62.610.62.49.52.610.61.16.82.212.21.411.31.218.47.07.01.611.30.4
31-40 years ago3.01.013.86.03.32.36.30.83.01.75.11.40.0.6.02.28.70.85.71.76.51.60.60.60.0.6.22.35.71.30.0.2.81.26.51.90.0.8.41.012.22.96.81.19.81.10.0.2.71.06.60.3
41-50 years ago1.50.80.0.3.42.44.00.64.32.13.91.29.19.17.12.36.60.72.11.01.20.70.0.2.42.45.92.32.80.95.13.02.91.37.02.00.0.8.50.97.72.33.50.812.11.20.0.1.10.75.30.3
over 50 years ago1.10.710.25.55.33.611.71.03.42.010.21.913.69.927.74.133.71.45.21.67.01.62.61.323.46.322.14.019.62.21.41.42.91.314.82.70.90.953.91.732.04.110.61.336.81.83.33.30.0.21.80.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #863465/329796
NFI3
forest area
avalanches SilvaProtect · percentage of salvage logging
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 SilvaProtectpercentage of salvage logging1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0%258.4266.6546.3533.4757.6531.97494.11
1-50%43.564.8192.4271.4352.2290.47154.75
over 50%67.9519.7910.7132.0305.3180.558106.14
total369.7191.1459.4536.8665.1432.87654.91
inside perimeter0%4.02116.01012.41122.1817.21013.91185.84
1-50%0.4710.7500.5580.21000.9450.0.2.726
over 50%0.4714.7191.6331.6331.6330.210010.013
total4.71921.5914.51023.9819.7914.11198.54
outside perimeter0%41.5663.8445.2550.6451.25103.13355.52
1-50%3.4236.4162.9240.7502.7260.55816.510
over 50%7.31521.599.0142.7256.4172.32849.16
total52.1591.6357.1454.0460.34106.03421.12
total0%303.91146.42103.93106.22126.02149.02935.31
1-50%47.2611.9125.8172.3285.8170.94573.95
over 50%75.5445.8621.396.21713.3113.124165.23
total426.61204.21131.02114.72145.12152.921174.50
© WSL, Swiss National Forest Inventory, 18.06.2020 #863466/329797
NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a0.4710.21000.0.0.0.0.0.0.0.0.658
less than 10 years ago247.0238.5720.797.51615.6114.820334.12
11-20 years ago65.3520.31013.0124.42112.1123.623118.64
21-30 years ago24.299.9147.8162.2309.2154.52157.86
31-40 years ago12.9126.9176.2185.5198.5158.31548.36
41-50 years ago7.7167.2163.2254.0226.8175.81834.68
over 50 years ago11.01320.71018.41020.5930.8826.58127.94
total368.51103.6469.3444.0683.0453.55721.91
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago1.6357.2164.2225.4183.4241.33823.29
11-20 years ago0.6584.9202.9264.3213.9220.65817.011
21-30 years ago0.8503.4241.9322.3283.2251.24112.812
31-40 years ago1.0441.4381.1412.2302.6281.2419.514
41-50 years ago0.0.1.2412.0312.0321.9321.4388.415
over 50 years ago0.6583.0263.8239.0145.3198.41530.18
total4.72021.0916.01125.1820.4914.011101.24
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago27.4839.7723.7813.01214.41112.412130.54
11-20 years ago10.41418.11014.0116.31712.9126.81768.65
21-30 years ago4.3219.9146.5175.3199.7148.21543.97
31-40 years ago2.8275.7194.7203.9227.9159.51434.67
41-50 years ago1.8335.0202.4295.3193.72310.71328.98
over 50 years ago5.51912.61210.31323.4816.01170.74138.53
total52.2691.0461.6457.2464.64118.52445.12
totaln/a0.4710.21000.0.0.0.0.0.0.0.0.658
less than 10 years ago276.0285.3448.6525.9833.4718.510487.81
11-20 years ago76.3543.2629.9714.91128.8811.013204.23
21-30 years ago29.4823.2916.2119.71422.1913.912114.54
31-40 years ago16.81114.01212.01211.61319.01019.01092.45
41-50 years ago9.51413.3127.61611.31312.41217.91072.05
over 50 years ago17.11136.3732.6752.9552.26105.63296.62
total425.31215.61146.92126.32168.02186.011268.10
© WSL, Swiss National Forest Inventory, 18.06.2020 #863467/329798
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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 SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%3.9233.0262.6281.0452.4291.63514.612
21-40%6.4186.9175.6199.0158.9156.11843.07
41-60%14.61115.5118.8159.01517.0119.21474.25
61-80%33.1721.0915.3119.81423.6911.413114.24
over 80%308.4151.5533.5711.61328.5816.611450.11
total366.5197.9465.8540.4680.4444.96696.01
inside perimeter0-20%0.0.0.8500.4700.21000.21000.6582.230
21-40%0.0.1.0450.4711.4381.2410.8504.820
41-60%0.21002.0321.4384.3213.6231.43812.812
61-80%0.8504.0223.2255.6188.2153.82225.69
over 80%3.72312.6129.61412.8116.4177.21652.46
total4.72020.4915.01124.3819.6913.81197.84
outside perimeter0-20%0.0.2.3302.0311.0451.4382.4299.115
21-40%0.21002.1311.8333.0266.8173.92217.810
41-60%1.2418.0165.7188.31514.3118.91446.46
61-80%4.72019.8109.31414.91117.81020.1986.55
over 80%45.7656.4537.8628.6721.6975.64265.72
total51.8688.5456.5555.8461.95111.03425.62
total0-20%3.9236.1185.0192.2304.0224.62125.99
21-40%6.61710.0147.81613.41217.01010.81365.65
41-60%16.01125.5815.91121.7934.8719.510133.44
61-80%38.6744.7627.8830.3749.6635.47226.33
over 80%357.81120.5380.9353.0556.6599.53768.21
total423.01206.81137.32120.52162.02169.721219.31
© WSL, Swiss National Forest Inventory, 18.06.2020 #863468/329799
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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 SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%4.1213.4231.4351.1412.3281.14113.312
21-40%6.4166.6165.7178.9147.7155.11840.47
41-60%15.11113.5117.5157.81514.5116.71665.15
61-80%34.5719.5914.4118.61418.0107.915102.94
over 80%309.7148.1530.4710.41222.6812.012433.21
total369.7191.1459.4536.8665.1432.87654.91
inside perimeter0-20%0.0.0.9440.21000.21000.21000.4711.832
21-40%0.0.1.1410.5581.4351.1410.9455.019
41-60%0.21001.7321.2384.1213.4231.43511.912
61-80%0.7504.2203.4235.4178.0154.12025.88
over 80%3.82213.6119.21312.9117.1157.41553.95
total4.71921.5914.51023.9819.7914.11198.54
outside perimeter0-20%0.0.2.7251.8310.9451.6331.8318.814
21-40%0.21002.5271.6333.0246.4163.22316.910
41-60%1.1417.9154.9197.81513.5118.61443.86
61-80%4.81920.999.21414.51017.21018.2984.84
over 80%46.1657.6539.5527.8721.6874.23266.82
total52.1591.6357.1454.0460.34106.03421.12
total0-20%4.1216.9163.4222.2294.1213.32323.99
21-40%6.61610.1137.91513.31115.2109.21362.35
41-60%16.41023.2813.61119.6931.3716.710120.84
61-80%40.0644.6627.0728.5743.2630.37213.53
over 80%359.61119.3279.1351.1451.3593.53754.01
total426.61204.21131.02114.72145.12152.921174.50
© WSL, Swiss National Forest Inventory, 18.06.2020 #863469/329800
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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 SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%3.9234.2222.6281.2412.4292.62817.011
21-40%6.4186.9176.0189.6149.3157.31645.57
41-60%15.01116.3119.8149.81418.11010.81379.95
61-80%33.3722.2915.91110.41424.2914.311120.44
over 80%309.8154.0534.9713.01229.0818.610459.11
total368.51103.6469.3444.0683.0453.55721.91
inside perimeter0-20%0.0.0.8500.4700.4710.21000.6582.429
21-40%0.0.1.0450.4711.6351.2410.8505.020
41-60%0.21002.0321.4384.5213.8231.43813.212
61-80%0.8504.2223.4245.6188.8153.82226.68
over 80%3.72313.01210.41313.0116.4177.41653.96
total4.72021.0916.01125.1820.4914.011101.24
outside perimeter0-20%0.0.2.5292.0311.0451.4383.82310.614
21-40%0.21002.3302.0313.4247.0173.92218.810
41-60%1.2418.4156.3188.71515.31110.51350.46
61-80%4.72020.2109.91415.31119.01021.8990.84
over 80%46.1657.7541.5628.8722.0978.44274.42
total52.2691.0461.6457.2464.64118.52445.12
total0-20%3.9237.5165.0192.6284.0227.01730.08
21-40%6.61710.2148.41514.61117.51011.91269.45
41-60%16.41126.7817.51023.1937.1722.69143.53
61-80%38.8746.5629.2831.3752.0540.06237.83
over 80%359.51124.6286.8354.7457.45104.43787.51
total425.31215.61146.92126.32168.02186.011268.10
© WSL, Swiss National Forest Inventory, 18.06.2020 #863470/329801
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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 SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%3.9233.4242.6281.0452.6281.83315.411
21-40%6.4187.1175.6199.2159.3156.31744.07
41-60%15.51116.1119.2149.21517.0119.61476.65
61-80%34.1721.2915.9119.91424.3911.413116.84
over 80%310.4151.9534.1711.81229.2817.210454.51
total370.3199.8467.4541.2682.3446.26707.21
inside perimeter0-20%0.0.0.8500.4700.21000.21000.6582.230
21-40%0.0.1.0450.4711.4381.2410.8504.820
41-60%0.21002.0321.4384.3213.8231.63513.212
61-80%0.8504.0223.2255.6188.2153.82225.69
over 80%3.72312.8129.61412.8116.8167.41653.16
total4.72020.6915.01124.3820.2914.21199.04
outside perimeter0-20%0.0.2.3302.0311.0451.4382.4299.115
21-40%0.21002.1312.0313.0266.8173.92218.010
41-60%1.2418.2155.7188.31514.4118.91446.86
61-80%4.92020.2109.71414.91118.01020.5988.15
over 80%46.1657.6538.6628.6721.8976.24268.92
total52.4690.3458.0555.8462.55111.93430.92
total0-20%3.9236.5175.0192.2304.2224.82026.79
21-40%6.61710.2148.01513.61217.41011.01366.85
41-60%16.81126.3816.31121.9935.1720.19136.64
61-80%39.8745.3628.8830.5750.4635.77230.53
over 80%360.21122.3382.4353.2557.85100.83776.51
total427.31210.71140.42121.32164.92172.421237.11
© WSL, Swiss National Forest Inventory, 18.06.2020 #863471/329802
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest
grid: terrestrial grid NFI3
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%4.1213.6222.3281.1412.3281.63314.911
21-40%6.4166.9166.1179.4149.5146.01744.46
41-60%15.11115.5109.3138.81417.5109.41375.65
61-80%34.5720.8916.91010.61323.7811.112117.54
over 80%309.7149.7533.8612.81129.2716.810451.91
total369.7196.4468.4442.7682.2444.96704.21
inside perimeter0-20%0.0.0.9440.4710.21000.21000.5582.129
21-40%0.0.1.1410.5581.8321.1410.9455.418
41-60%0.21001.7321.2384.1213.9211.43512.512
61-80%0.7504.2203.4235.4178.2144.12026.08
over 80%3.82213.6119.41313.1117.1157.51554.55
total4.71921.5914.91024.5720.4914.510100.44
outside perimeter0-20%0.0.2.7251.8310.9451.8312.2299.314
21-40%0.21002.5271.8313.0246.4163.52217.410
41-60%1.1417.9155.2187.81514.2118.91445.26
61-80%4.81921.199.61314.51017.41019.3986.64
over 80%46.1657.6539.7527.8722.1877.73271.02
total52.1591.8358.2454.0461.94111.62429.62
total0-20%4.1217.1154.5202.2294.3204.32026.48
21-40%6.61610.5138.41414.21117.01010.41367.15
41-60%16.41025.1815.81020.7935.5719.79133.23
61-80%40.0646.0629.8730.5749.3534.57230.13
over 80%359.61120.9282.9353.6458.44102.03777.51
total426.61209.71141.42121.22164.52171.011234.31
© WSL, Swiss National Forest Inventory, 18.06.2020 #863472/329803
NFI3
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%3.9234.8202.6281.2412.6282.82718.011
21-40%6.4187.3166.01810.0149.7147.71647.16
41-60%15.91116.91110.21410.01418.11011.41382.55
61-80%34.3722.4916.51110.81324.9914.311123.24
over 80%311.5154.4535.5713.01229.6818.710462.71
total372.11105.8470.9445.0684.8454.95733.51
inside perimeter0-20%0.0.0.8500.4700.4710.21000.6582.429
21-40%0.0.1.0450.4711.6351.2410.8505.020
41-60%0.21002.2301.4384.5213.9221.63513.712
61-80%0.8504.2223.4245.6188.8153.82226.68
over 80%3.72313.21210.41313.0116.8167.41654.56
total4.72021.4916.01125.1821.0914.211102.34
outside perimeter0-20%0.0.2.5292.0311.0451.4384.02210.813
21-40%0.21002.3302.2303.4247.0173.92219.010
41-60%1.2418.4156.3188.91415.31110.51350.66
61-80%4.92020.8910.11415.31119.01022.2992.24
over 80%46.5658.7542.3629.0722.2978.64277.32
total52.8692.6462.9457.6464.84119.22449.92
total0-20%3.9238.1155.0192.6284.2227.41631.28
21-40%6.61710.6138.61515.01117.91012.31271.25
41-60%17.21027.5817.91023.5937.3723.49146.93
61-80%40.0747.3630.0731.7752.6540.46242.03
over 80%361.71126.2288.2354.9458.65104.83794.51
total429.51219.81149.72127.72170.62188.411285.70
© WSL, Swiss National Forest Inventory, 18.06.2020 #863473/329804
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