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NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: production region
unit: %
unit of evaluation: forest
grid: terrestrial grid NFI2
state1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %±
n/an/a6.50.85.30.612.91.430.81.545.43.215.50.6
less than 10 years ago55.51.768.91.341.72.023.31.47.31.746.50.8
11-20 years ago23.71.418.71.124.41.713.51.17.51.718.80.6
21-30 years ago8.50.93.70.57.71.17.50.94.91.46.50.4
31-40 years ago2.80.61.40.33.10.75.00.75.91.53.20.3
41-50 years ago0.70.30.70.22.90.73.40.66.01.62.00.2
over 50 years ago2.40.51.30.37.21.016.41.222.92.77.50.4
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a9.76.546.835.223.111.614.23.119.04.916.02.4
less than 10 years ago33.610.353.235.247.313.324.43.83.12.221.02.7
11-20 years ago13.77.40.0.8.17.716.73.310.53.814.02.3
21-30 years ago9.66.50.0.7.16.811.42.97.63.39.82.0
31-40 years ago14.17.60.0.0.0.9.52.69.53.79.21.9
41-50 years ago4.54.40.0.7.16.84.01.713.24.36.81.7
over 50 years ago14.77.80.0.7.37.019.93.637.16.123.22.8
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a5.71.77.52.48.81.113.71.021.71.613.70.6
less than 10 years ago41.43.655.44.642.12.028.41.310.91.229.40.8
11-20 years ago24.73.118.53.624.31.716.91.18.31.117.10.7
21-30 years ago9.42.16.02.211.31.310.70.97.31.09.80.6
31-40 years ago6.31.82.51.44.30.89.20.87.71.07.30.5
41-50 years ago4.81.61.71.22.60.66.30.711.71.36.50.5
over 50 years ago7.81.98.42.66.51.014.81.032.31.816.30.7
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a6.40.75.60.611.00.920.90.827.41.414.80.4
less than 10 years ago52.71.567.71.342.01.426.00.99.51.038.70.5
11-20 years ago23.61.318.71.124.11.215.50.88.30.918.00.5
21-30 years ago8.70.83.90.59.50.89.40.66.80.87.90.3
31-40 years ago3.60.61.50.33.70.57.50.57.40.85.00.3
41-50 years ago1.40.40.80.22.80.55.00.510.41.04.00.2
over 50 years ago3.60.61.90.46.90.715.80.830.31.511.60.4
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #852468/318799
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1983/85
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.0.0.0.0.0.0.0.
less than 10 years ago36.040.0.1.04437.04
11-20 years ago6.8160.0.0.21007.016
21-30 years ago1.6350.0.0.0.1.635
31-40 years ago0.21000.0.0.4710.658
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0440.0.0.21001.240
total45.720.0.1.83347.52
AIn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.4340.0.1.9273.316
11-20 years ago0.6580.0.0.7471.235
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.21000.0.0.21000.471
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total2.3250.0.2.8205.19
ARn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.5210.0.1.6325.115
11-20 years ago1.3360.0.1.1362.525
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.31000.0.0.0.0.3100
over 50 years ago0.21000.0.0.0.0.2100
total5.3130.0.2.8208.16
BEn/a0.0.0.21000.21000.471
less than 10 years ago63.551.83345.26110.53
11-20 years ago10.8130.65815.61127.08
21-30 years ago4.4211.0455.51910.813
31-40 years ago1.6350.4712.4294.421
41-50 years ago0.6580.0.1.9332.529
over 50 years ago5.4190.4715.41911.113
total86.344.42176.04166.71
BL/BSn/a0.0.0.0.0.0.0.0.
less than 10 years ago12.490.5721.93214.87
11-20 years ago1.7340.0.1.1442.827
21-30 years ago0.9500.0.0.4711.341
31-40 years ago0.21000.0.0.0.0.2100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.5670.0.0.0.0.567
total15.960.5723.42319.73
FRn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.5100.0.6.31620.87
11-20 years ago5.7180.0.5.11810.812
21-30 years ago2.5290.0.0.4722.926
31-40 years ago1.2410.0.1.1452.330
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago2.3300.0.1.2413.524
total26.360.0.14.2940.53
GEn/a0.0.0.0.0.0.0.0.
less than 10 years ago0.8660.0.0.0.0.866
11-20 years ago0.41000.0.0.0.0.4100
21-30 years ago0.8660.0.0.0.0.866
31-40 years ago1.2500.0.0.0.1.250
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.0.0.0.0.0.0.0.
total3.1130.0.0.0.3.113
GLn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.4221.1403.0257.513
11-20 years ago0.6580.4691.4372.328
21-30 years ago0.4710.4710.9441.832
31-40 years ago0.0.0.0.0.6570.657
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.6580.4710.9431.930
total5.1172.3276.81414.27
GRn/a0.4710.0.0.0.0.471
less than 10 years ago23.691.63533.3758.55
11-20 years ago6.9171.24014.71122.89
21-30 years ago5.5191.24111.21318.010
31-40 years ago4.8200.21008.21513.312
41-50 years ago2.0320.6584.2216.817
over 50 years ago15.0111.04515.31131.27
total58.255.71887.03150.92
JUn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.390.21004.81819.37
11-20 years ago4.7190.4712.5277.615
21-30 years ago1.9310.0.1.0442.925
31-40 years ago0.21000.21000.4710.850
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.2410.4711.8333.323
total22.461.24010.51234.03
LUn/a0.0.0.0.0.0.0.0.
less than 10 years ago25.660.0.4.42030.05
11-20 years ago4.8200.0.2.2307.016
21-30 years ago1.0440.0.0.21001.241
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.9490.0.0.0.0.949
over 50 years ago1.0450.0.0.8491.833
total33.340.0.7.61541.03
NEn/a0.21000.0.0.0.0.2100
less than 10 years ago17.770.0.3.32321.06
11-20 years ago4.2200.0.0.21004.420
21-30 years ago0.8510.0.0.0.0.851
31-40 years ago0.9510.0.0.21001.145
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4700.21000.21000.851
total24.150.21003.82128.23
NWn/a0.31000.0.0.0.0.3100
less than 10 years ago1.8330.0.2.2294.119
11-20 years ago0.0.0.0.1.1441.144
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.4720.21000.21000.848
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0490.0.0.31001.243
total3.5210.21003.8207.58
OWn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.3190.0.3.4227.713
11-20 years ago1.4370.0.1.2412.626
21-30 years ago0.6580.0.1.4391.932
31-40 years ago1.0440.0.0.8511.833
41-50 years ago0.7580.0.0.9481.536
over 50 years ago1.3370.3721.5343.122
total9.3120.3729.11118.74
SGn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.8111.04514.21030.16
11-20 years ago2.9270.21006.1189.114
21-30 years ago1.0450.21002.9264.122
31-40 years ago1.4380.0.1.8333.225
41-50 years ago0.0.0.0.1.3401.340
over 50 years ago1.8350.21002.1314.122
total21.881.73528.4652.03
SHn/a0.21000.0.0.0.0.2100
less than 10 years ago10.160.0.0.210010.36
11-20 years ago0.9410.0.0.21001.137
21-30 years ago0.4710.0.0.0.0.471
31-40 years ago0.21000.0.0.0.0.2100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOn/a0.0.0.0.0.0.0.0.
less than 10 years ago24.350.21001.53526.04
11-20 years ago2.7250.0.0.21002.924
21-30 years ago1.1410.21000.21001.636
31-40 years ago0.21000.21000.21000.758
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.3710.21000.0.0.557
total28.930.9502.13031.92
SZn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.3150.4696.01713.89
11-20 years ago2.4280.21001.7334.320
21-30 years ago1.6350.21001.8323.523
31-40 years ago0.8500.0.1.1401.930
41-50 years ago0.6580.0.0.0.0.658
over 50 years ago1.8330.0.1.2412.925
total14.590.84911.71027.14
TGn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.270.0.2.02816.15
11-20 years ago2.6250.0.0.21002.824
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.6590.0.0.0.0.659
total17.350.0.2.42619.73
TIn/a0.0.0.0.0.21000.2100
less than 10 years ago3.6230.85010.71315.111
11-20 years ago3.0260.8509.51413.312
21-30 years ago2.2300.6588.81511.613
31-40 years ago1.9331.43813.51116.810
41-50 years ago0.9450.8509.61411.413
over 50 years ago7.2162.92727.2837.26
total18.8107.31679.53105.52
URn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.3370.8502.6244.817
11-20 years ago1.2400.6570.6562.426
21-30 years ago0.4710.21000.4691.043
31-40 years ago0.4720.0.0.4690.850
41-50 years ago0.4670.0.0.21000.652
over 50 years ago1.6341.0451.6344.219
total5.2172.6265.81513.76
VDn/a1.8330.0.0.0.1.833
less than 10 years ago39.060.0.6.81645.95
11-20 years ago17.5100.0.4.52022.08
21-30 years ago4.3210.0.3.5237.915
31-40 years ago2.0310.4711.9314.321
41-50 years ago1.4370.0.0.6582.031
over 50 years ago4.1220.21002.7266.916
total70.030.65820.2990.82
VSn/a0.21000.0.0.5570.750
less than 10 years ago6.6171.63513.31121.49
11-20 years ago4.6211.83312.71219.19
21-30 years ago3.5241.53512.81217.910
31-40 years ago2.2300.21009.61411.912
41-50 years ago1.3380.4713.3245.019
over 50 years ago8.7151.83317.01027.58
total27.187.21669.33103.62
ZGn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.4230.0.2.0264.412
11-20 years ago0.21000.0.0.7460.943
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total2.9190.0.2.6185.57
ZHn/a0.0.0.0.0.0.0.0.
less than 10 years ago39.240.0.1.53740.63
11-20 years ago6.5170.0.0.0.6.517
21-30 years ago1.5380.0.0.21001.735
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.4370.0.0.0.1.437
total48.520.0.1.63550.22
Switzerlandn/a3.1260.21000.9454.222
less than 10 years ago385.9210.114173.03568.91
11-20 years ago94.646.11883.45184.03
21-30 years ago36.475.61952.0694.14
31-40 years ago21.0103.32543.1767.45
41-50 years ago9.4151.83322.2933.48
over 50 years ago57.668.91579.05145.63
total607.9135.97453.721097.51
© WSL, Swiss National Forest Inventory, 19.06.2020 #852469/318800
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
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
state1983/85
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.0.0.0.0.0.0.0.
less than 10 years ago35.640.0.1.04436.64
11-20 years ago6.6160.0.0.21006.816
21-30 years ago1.6350.0.0.0.1.635
31-40 years ago0.21000.0.0.4710.658
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8500.0.0.21001.044
total44.920.0.1.83346.72
AIn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.4340.0.1.9273.316
11-20 years ago0.6580.0.0.7471.235
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.21000.0.0.21000.471
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total2.3250.0.2.8205.19
ARn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.5210.0.1.6325.115
11-20 years ago1.3360.0.1.1362.525
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.31000.0.0.0.0.3100
over 50 years ago0.21000.0.0.0.0.2100
total5.3130.0.2.8208.16
BEn/a0.0.0.21000.21000.471
less than 10 years ago62.351.83343.76107.93
11-20 years ago10.4140.65815.01126.08
21-30 years ago3.8231.0455.1209.914
31-40 years ago1.6350.4712.2304.222
41-50 years ago0.6580.0.1.9332.529
over 50 years ago4.8200.4715.21910.313
total83.544.42173.24161.11
BL/BSn/a0.0.0.0.0.0.0.0.
less than 10 years ago12.290.5721.93214.67
11-20 years ago1.7340.0.1.1442.827
21-30 years ago0.9500.0.0.4711.341
31-40 years ago0.21000.0.0.0.0.2100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.5670.0.0.0.0.567
total15.760.5723.42319.64
FRn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.3100.0.6.31620.67
11-20 years ago5.7180.0.4.91810.612
21-30 years ago2.5290.0.0.4722.926
31-40 years ago1.2410.0.0.9512.132
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago2.1320.0.1.2413.325
total25.950.0.13.81039.73
GEn/a0.0.0.0.0.0.0.0.
less than 10 years ago0.8660.0.0.0.0.866
11-20 years ago0.41000.0.0.0.0.4100
21-30 years ago0.8660.0.0.0.0.866
31-40 years ago1.2500.0.0.0.1.250
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.0.0.0.0.0.0.0.
total3.1130.0.0.0.3.113
GLn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.1231.1402.7257.014
11-20 years ago0.6580.4691.4372.328
21-30 years ago0.4710.4710.9441.832
31-40 years ago0.0.0.0.0.6570.657
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.6580.4710.9431.930
total4.9182.3276.61413.87
GRn/a0.4710.0.0.0.0.471
less than 10 years ago22.491.63533.0756.95
11-20 years ago6.5171.24014.51122.29
21-30 years ago5.3191.24111.01317.610
31-40 years ago4.8200.21008.21513.312
41-50 years ago2.0320.6584.2216.817
over 50 years ago12.7120.65814.11127.48
total54.255.31985.03144.52
JUn/a0.0.0.0.0.0.0.0.
less than 10 years ago13.5100.21004.81818.57
11-20 years ago4.5200.4712.5277.415
21-30 years ago1.9310.0.1.0442.925
31-40 years ago0.21000.21000.4710.850
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.2410.4711.6353.124
total21.361.24010.31232.83
LUn/a0.0.0.0.0.0.0.0.
less than 10 years ago24.860.0.4.42029.25
11-20 years ago4.6200.0.2.2306.816
21-30 years ago1.0440.0.0.21001.241
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.9490.0.0.0.0.949
over 50 years ago0.6580.0.0.6571.241
total31.940.0.7.41539.43
NEn/a0.21000.0.0.0.0.2100
less than 10 years ago17.370.0.3.12320.46
11-20 years ago3.9210.0.0.21004.120
21-30 years ago0.8510.0.0.0.0.851
31-40 years ago0.9510.0.0.21001.145
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4700.21000.21000.851
total23.450.21003.62127.33
NWn/a0.31000.0.0.0.0.3100
less than 10 years ago1.8330.0.2.0313.820
11-20 years ago0.0.0.0.1.1441.144
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.4720.21000.21000.848
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0490.0.0.31001.243
total3.5210.21003.5217.29
OWn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.1200.0.3.4227.513
11-20 years ago1.4370.0.1.2412.626
21-30 years ago0.6580.0.1.1441.734
31-40 years ago1.0440.0.0.7571.734
41-50 years ago0.7580.0.0.9481.536
over 50 years ago1.3370.3721.5343.122
total9.1120.3728.71118.14
SGn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.2111.04514.01029.26
11-20 years ago2.4290.21005.3197.915
21-30 years ago0.8500.21002.9263.923
31-40 years ago1.4380.0.1.8333.225
41-50 years ago0.0.0.0.1.3401.340
over 50 years ago1.3410.0.1.9333.225
total20.191.53827.2748.84
SHn/a0.21000.0.0.0.0.2100
less than 10 years ago10.160.0.0.210010.36
11-20 years ago0.9410.0.0.21001.137
21-30 years ago0.4710.0.0.0.0.471
31-40 years ago0.21000.0.0.0.0.2100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOn/a0.0.0.0.0.0.0.0.
less than 10 years ago23.950.21001.53525.64
11-20 years ago2.7250.0.0.21002.924
21-30 years ago1.1410.21000.21001.636
31-40 years ago0.21000.21000.21000.758
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.3710.21000.0.0.557
total28.530.9502.13031.62
SZn/a0.0.0.0.0.0.0.0.
less than 10 years ago6.7160.4696.01713.29
11-20 years ago2.0310.21001.7333.921
21-30 years ago1.6350.0.1.5343.124
31-40 years ago0.8500.0.1.1401.930
41-50 years ago0.6580.0.0.0.0.658
over 50 years ago1.8330.0.1.0452.826
total13.5100.75611.41125.54
TGn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.170.0.2.02816.05
11-20 years ago2.6250.0.0.21002.824
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.6590.0.0.0.0.659
total17.250.0.2.42619.63
TIn/a0.0.0.0.0.21000.2100
less than 10 years ago2.5290.85010.11413.312
11-20 years ago2.8260.8509.11412.712
21-30 years ago2.0310.6588.61511.213
31-40 years ago1.9331.43813.11216.410
41-50 years ago0.6570.8509.51410.813
over 50 years ago6.6172.92725.8835.27
total16.3107.31676.3399.92
URn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.1400.8502.5254.418
11-20 years ago1.2400.6570.6562.426
21-30 years ago0.4710.21000.4691.043
31-40 years ago0.4720.0.0.4690.850
41-50 years ago0.4670.0.0.21000.652
over 50 years ago1.4360.8501.6343.820
total4.8182.4275.71512.96
VDn/a1.8330.0.0.0.1.833
less than 10 years ago38.060.0.6.81644.95
11-20 years ago17.1100.0.4.52021.69
21-30 years ago4.1210.0.3.4247.516
31-40 years ago1.6350.4711.9313.922
41-50 years ago1.2410.0.0.6581.833
over 50 years ago3.7230.21002.4296.217
total67.530.65819.6987.72
VSn/a0.21000.0.0.5570.750
less than 10 years ago6.0181.43813.11120.59
11-20 years ago4.0221.53511.91217.410
21-30 years ago3.3251.53512.81217.710
31-40 years ago2.2300.21009.61411.912
41-50 years ago1.3380.4713.3245.019
over 50 years ago7.5161.83316.41025.78
total24.586.81667.7499.02
ZGn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.4230.0.1.8284.213
11-20 years ago0.21000.0.0.7460.943
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total2.9190.0.2.5205.48
ZHn/a0.0.0.0.0.0.0.0.
less than 10 years ago38.240.0.1.53739.64
11-20 years ago6.3170.0.0.0.6.317
21-30 years ago1.5380.0.0.21001.735
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.2400.0.0.0.1.240
total47.120.0.1.63548.82
Switzerlandn/a3.1260.21000.9454.222
less than 10 years ago374.529.914169.13553.51
11-20 years ago90.645.91880.45176.93
21-30 years ago34.885.51950.6690.95
31-40 years ago20.6103.32542.2766.05
41-50 years ago8.8151.83322.0932.68
over 50 years ago51.068.11674.65133.74
total583.4134.57439.921057.81
© WSL, Swiss National Forest Inventory, 19.06.2020 #852470/318801
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI1
state1983/85
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.0.0.0.0.0.0.0.
less than 10 years ago37.930.0.0.93338.83
11-20 years ago6.2120.0.0.11006.312
21-30 years ago1.3270.0.0.11001.426
31-40 years ago0.4500.0.0.2710.641
41-50 years ago0.0.0.0.0.11000.1100
over 50 years ago0.6400.0.0.2710.835
total46.320.0.1.62547.91
AIn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.4220.0.1.6213.012
11-20 years ago0.4500.0.0.9301.325
21-30 years ago0.0.0.0.0.11000.1100
31-40 years ago0.11000.0.0.11000.271
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3570.0.0.0.0.357
total2.2170.0.2.7144.97
ARn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.2150.0.1.6234.810
11-20 years ago1.2270.0.1.0292.219
21-30 years ago0.0.0.0.0.3580.358
31-40 years ago0.11000.0.0.0.0.1100
41-50 years ago0.2720.0.0.0.0.272
over 50 years ago0.2710.0.0.11000.357
total4.9100.0.3.0157.94
BEn/a0.2710.11000.2710.545
less than 10 years ago63.831.72444.14109.62
11-20 years ago11.190.54515.5827.26
21-30 years ago4.3150.8355.51310.69
31-40 years ago1.5260.4502.0223.916
41-50 years ago0.5450.0.1.2291.724
over 50 years ago5.6130.4505.81311.89
total87.033.91674.43165.41
BL/BSn/a0.0.0.0.0.0.0.0.
less than 10 years ago13.160.3581.92315.35
11-20 years ago2.4200.11000.8353.316
21-30 years ago0.6410.0.0.3580.933
31-40 years ago0.11000.0.0.0.0.1100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.6380.0.0.11000.834
total16.940.4503.11720.42
FRn/a0.0.0.0.0.0.0.0.
less than 10 years ago13.770.2717.11121.05
11-20 years ago5.3130.0.4.6139.89
21-30 years ago2.2210.0.1.1303.317
31-40 years ago1.0310.11001.3282.420
41-50 years ago0.0.0.0.0.2710.271
over 50 years ago2.0220.0.1.6253.616
total24.240.35816.0640.42
GEn/a0.11000.0.0.0.0.1100
less than 10 years ago1.0300.0.0.0.1.030
11-20 years ago0.3690.0.0.0.0.369
21-30 years ago1.0320.0.0.0.1.032
31-40 years ago0.6410.0.0.0.0.641
41-50 years ago0.11000.0.0.0.0.1100
over 50 years ago0.3690.0.0.0.0.369
total3.460.0.0.0.3.46
GLn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.7150.8352.9187.59
11-20 years ago0.4500.3561.3272.021
21-30 years ago0.4500.2710.6401.228
31-40 years ago0.11000.0.0.8340.932
41-50 years ago0.11000.0.0.2710.358
over 50 years ago1.5250.3581.2283.017
total6.2111.7237.01015.05
GRn/a0.3580.0.0.11000.450
less than 10 years ago23.261.52634.9559.63
11-20 years ago8.5111.42713.3823.26
21-30 years ago4.6151.22910.6916.47
31-40 years ago5.3140.6418.41114.28
41-50 years ago2.3210.3585.7138.311
over 50 years ago14.981.62515.1831.65
total59.146.71287.92153.71
JUn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.170.4504.81419.35
11-20 years ago5.1130.3582.1217.511
21-30 years ago1.7240.0.1.0312.719
31-40 years ago0.6410.11000.2710.933
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.9230.2711.5253.716
total23.441.0319.7934.12
LUn/a0.0.0.0.0.0.0.0.
less than 10 years ago25.140.11004.31429.53
11-20 years ago5.8120.0.1.5257.310
21-30 years ago0.9330.0.0.4501.227
31-40 years ago0.6410.11000.2700.933
41-50 years ago0.4490.0.0.0.0.449
over 50 years ago1.4260.0.0.5451.922
total34.130.2716.81141.22
NEn/a0.2700.0.0.0.0.270
less than 10 years ago18.350.0.2.61821.04
11-20 years ago4.1150.11000.5454.714
21-30 years ago0.6410.0.0.0.0.641
31-40 years ago0.5450.0.0.2710.738
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8350.11000.3571.229
total24.530.2713.61528.42
NWn/a0.2710.11000.3570.740
less than 10 years ago1.8220.2692.5184.512
11-20 years ago0.2690.0.0.8371.032
21-30 years ago0.11000.0.0.2710.358
31-40 years ago0.3580.11000.11000.543
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8370.0.0.2691.032
total3.5140.4494.1128.05
OWn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.9130.11003.6168.69
11-20 years ago0.9330.0.1.1302.121
21-30 years ago0.4500.11001.4281.823
31-40 years ago1.0330.0.0.8351.823
41-50 years ago0.4500.0.0.8351.328
over 50 years ago1.4250.2721.6243.216
total9.180.4519.3818.83
SGn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.670.83514.9730.34
11-20 years ago2.1220.2715.6137.911
21-30 years ago0.6410.2713.2174.016
31-40 years ago0.8350.0.2.1222.918
41-50 years ago0.3580.0.1.0311.328
over 50 years ago1.5270.2712.7194.415
total19.961.42729.5450.82
SHn/a0.2710.0.0.0.0.271
less than 10 years ago8.660.11000.3589.06
11-20 years ago1.9210.0.0.11002.021
21-30 years ago0.5450.0.0.0.0.545
31-40 years ago0.4480.0.0.11000.543
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.0.0.0.0.0.0.0.
total11.630.11000.54412.22
SOn/a0.0.0.0.0.0.0.0.
less than 10 years ago22.540.11002.02224.63
11-20 years ago3.5160.0.0.4503.915
21-30 years ago0.9330.11000.11001.130
31-40 years ago0.3580.11000.2710.641
41-50 years ago0.11000.0.0.0.0.1100
over 50 years ago0.7370.11000.2701.031
total28.030.4502.91831.42
SZn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.1110.4497.11114.66
11-20 years ago2.1220.3571.9234.315
21-30 years ago1.2290.4501.8243.417
31-40 years ago0.7370.0.0.9331.624
41-50 years ago0.4500.0.0.2710.640
over 50 years ago1.4260.11000.8352.420
total12.971.32812.7726.83
TGn/a0.0.0.0.0.11000.1100
less than 10 years ago14.150.0.1.92116.04
11-20 years ago2.6180.0.0.2702.817
21-30 years ago0.0.0.0.0.2710.271
31-40 years ago0.0.0.0.0.11000.1100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3580.0.0.0.0.358
total17.030.0.2.41819.42
TIn/a0.0.0.0.0.11000.1100
less than 10 years ago3.4170.73810.5914.78
11-20 years ago2.8191.1309.21013.18
21-30 years ago2.1221.2299.31012.68
31-40 years ago2.4201.32814.7818.47
41-50 years ago0.6410.6419.21010.49
over 50 years ago7.7112.42028.0538.14
total19.177.31181.12107.42
URn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.3280.7382.7184.813
11-20 years ago1.1300.6440.8342.519
21-30 years ago0.3580.3580.5501.131
31-40 years ago0.3570.11000.3560.837
41-50 years ago0.2550.0.0.6440.835
over 50 years ago2.1220.9341.4274.414
total5.4122.7196.31114.45
VDn/a1.7240.0.0.0.1.724
less than 10 years ago42.140.2716.91249.23
11-20 years ago16.770.11004.51521.36
21-30 years ago4.2150.0.3.4177.611
31-40 years ago1.6250.4502.1224.215
41-50 years ago1.5260.0.0.4501.923
over 50 years ago4.9140.11003.1188.111
total72.820.83520.4694.11
VSn/a0.4500.0.0.8351.129
less than 10 years ago7.7111.32814.0823.06
11-20 years ago4.8141.13012.1917.97
21-30 years ago3.2171.13012.5816.87
31-40 years ago2.1220.7388.91011.89
41-50 years ago1.0320.3583.2174.515
over 50 years ago10.691.92314.8827.36
total29.856.41266.23102.42
ZGn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.8140.0.2.0184.97
11-20 years ago0.4490.0.0.4490.733
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.11000.0.0.0.0.1100
total3.3120.0.2.4165.74
ZHn/a0.0.0.0.0.0.0.0.
less than 10 years ago39.030.0.0.83539.83
11-20 years ago7.2110.0.0.0.7.211
21-30 years ago1.2290.0.0.11001.327
31-40 years ago0.3580.0.0.0.0.358
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.1300.0.0.0.1.130
total48.810.0.0.93349.71
Switzerlandn/a3.4170.2711.6255.214
less than 10 years ago388.819.810175.72574.31
11-20 years ago96.736.11378.83181.62
21-30 years ago32.365.71352.6490.63
31-40 years ago21.374.01643.8569.14
41-50 years ago8.3111.22922.7732.25
over 50 years ago62.748.61179.13150.52
total613.4135.75454.411103.60
© WSL, Swiss National Forest Inventory, 19.06.2020 #852471/318802
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state1983/85
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.0.0.0.0.0.0.0.
less than 10 years ago36.040.0.1.04437.04
11-20 years ago6.8160.0.0.21007.016
21-30 years ago1.8330.0.0.0.1.833
31-40 years ago0.21000.0.0.4710.658
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0440.0.0.21001.240
total45.920.0.1.83347.72
AIn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.4340.0.1.9273.316
11-20 years ago0.6580.0.0.7471.235
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.21000.0.0.21000.471
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total2.3250.0.2.8205.19
ARn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.5210.0.1.6325.115
11-20 years ago1.3360.0.1.1362.525
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.31000.0.0.0.0.3100
over 50 years ago0.21000.0.0.0.0.2100
total5.3130.0.2.8208.16
BEn/a4.0220.4710.4714.820
less than 10 years ago63.951.83345.26110.93
11-20 years ago10.8130.65815.61127.08
21-30 years ago4.4211.0455.51910.813
31-40 years ago1.6350.4712.4294.421
41-50 years ago0.6580.0.2.1322.728
over 50 years ago6.4170.4716.41713.112
total91.734.62177.44173.81
BL/BSn/a0.0.0.0.0.0.0.0.
less than 10 years ago12.490.5721.93214.87
11-20 years ago1.7340.0.1.1442.827
21-30 years ago0.9500.0.0.4711.341
31-40 years ago0.5700.0.0.0.0.570
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.5670.0.0.0.0.567
total16.160.5723.42320.03
FRn/a0.8510.0.0.0.0.851
less than 10 years ago14.5100.0.6.31620.87
11-20 years ago5.7180.0.5.11810.812
21-30 years ago2.5290.0.0.4722.926
31-40 years ago1.2410.0.1.1452.330
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago2.3300.0.1.2413.524
total27.250.0.14.2941.43
GEn/a0.0.0.0.0.0.0.0.
less than 10 years ago0.8660.0.0.0.0.866
11-20 years ago0.41000.0.0.0.0.4100
21-30 years ago0.8660.0.0.0.0.866
31-40 years ago1.2500.0.0.0.1.250
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.0.0.0.0.0.0.0.
total3.1130.0.0.0.3.113
GLn/a1.7330.21000.7562.627
less than 10 years ago3.4221.1403.0257.513
11-20 years ago0.6580.4691.4372.328
21-30 years ago0.4710.4710.9441.832
31-40 years ago0.0.0.0.0.8500.850
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.6580.4711.1402.129
total6.8152.5257.91217.15
GRn/a17.1110.21003.12520.410
less than 10 years ago23.891.83333.3758.95
11-20 years ago7.1161.24014.71123.09
21-30 years ago5.7181.24111.61318.610
31-40 years ago5.4190.21008.21513.911
41-50 years ago2.0320.8504.2217.016
over 50 years ago16.2111.04516.31133.47
total77.446.31791.53175.22
JUn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.390.21004.81819.37
11-20 years ago4.7190.4712.5277.615
21-30 years ago1.9310.0.1.0442.925
31-40 years ago0.21000.21000.4710.850
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.2410.4711.8333.323
total22.461.24010.51234.03
LUn/a0.21000.0.0.21000.471
less than 10 years ago25.660.0.4.42030.05
11-20 years ago5.0190.0.2.2307.216
21-30 years ago1.2400.0.0.21001.438
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.9490.0.0.0.0.949
over 50 years ago1.4380.0.0.8492.230
total34.340.0.7.81442.12
NEn/a0.21000.0.0.21000.370
less than 10 years ago17.770.0.3.32321.06
11-20 years ago4.2200.0.0.21004.420
21-30 years ago0.8510.0.0.0.0.851
31-40 years ago0.9510.0.0.21001.145
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4700.21000.21000.851
total24.150.21004.02028.33
NWn/a0.5710.0.0.0.0.571
less than 10 years ago2.0320.0.2.2294.318
11-20 years ago0.0.0.0.1.1441.144
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.4720.21000.21000.848
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0490.0.0.31001.243
total3.9200.21003.8207.98
OWn/a0.21000.0.0.21000.471
less than 10 years ago4.3190.0.3.4227.713
11-20 years ago1.4370.0.1.2412.626
21-30 years ago0.6580.0.1.4391.932
31-40 years ago1.0440.0.0.8511.833
41-50 years ago0.7580.0.0.9481.536
over 50 years ago1.3370.3721.5343.122
total9.5120.3729.31119.14
SGn/a1.2410.5710.4712.132
less than 10 years ago15.0101.04514.21030.26
11-20 years ago2.9270.21006.1189.114
21-30 years ago1.0450.21002.9264.122
31-40 years ago1.4380.0.2.6284.022
41-50 years ago0.0.0.0.1.5381.538
over 50 years ago2.0330.21002.9275.120
total23.482.23130.6656.33
SHn/a0.21000.0.0.0.0.2100
less than 10 years ago10.160.0.0.210010.36
11-20 years ago0.9410.0.0.21001.137
21-30 years ago0.4710.0.0.0.0.471
31-40 years ago0.21000.0.0.0.0.2100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOn/a0.0.0.0.0.0.0.0.
less than 10 years ago24.350.21001.53526.04
11-20 years ago2.9240.0.0.21003.123
21-30 years ago1.1410.21000.21001.636
31-40 years ago0.21000.21000.21000.758
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.3710.21000.0.0.557
total29.130.9502.13032.12
SZn/a0.21000.0.0.21000.471
less than 10 years ago7.3150.4696.21614.09
11-20 years ago2.4280.21001.7334.320
21-30 years ago1.6350.21001.8323.523
31-40 years ago0.8500.0.1.1401.930
41-50 years ago0.6580.0.0.0.0.658
over 50 years ago2.4280.0.1.4373.822
total15.390.84912.41028.53
TGn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.270.0.2.02816.15
11-20 years ago2.6250.0.0.21002.824
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.6590.0.0.0.0.659
total17.350.0.2.42619.73
TIn/a9.3140.85013.21223.39
less than 10 years ago3.6230.85010.71315.111
11-20 years ago3.2250.8509.51413.412
21-30 years ago2.2300.6588.81511.613
31-40 years ago1.9331.43814.11117.410
41-50 years ago1.2410.8509.61411.613
over 50 years ago8.1153.32528.0839.46
total29.588.41593.93131.82
URn/a3.0250.6580.8504.321
less than 10 years ago1.5350.8502.6245.017
11-20 years ago1.2400.6570.6562.426
21-30 years ago0.4710.21000.4691.043
31-40 years ago0.4720.0.0.4690.850
41-50 years ago0.4670.0.0.21000.652
over 50 years ago1.8311.0451.6344.418
total8.6133.2236.61418.45
VDn/a2.8260.0.0.6583.424
less than 10 years ago39.060.0.6.81645.95
11-20 years ago17.5100.0.4.52022.08
21-30 years ago4.3210.0.3.5237.915
31-40 years ago2.0310.4711.9314.321
41-50 years ago1.4370.0.0.6582.031
over 50 years ago4.5210.21002.9267.616
total71.530.65820.9993.02
VSn/a7.3170.6581.5359.414
less than 10 years ago6.6171.63513.31121.49
11-20 years ago4.8201.83313.21219.79
21-30 years ago3.7231.53513.21118.510
31-40 years ago2.2300.210010.01312.412
41-50 years ago1.3380.4713.3245.019
over 50 years ago9.9142.03218.01029.97
total35.878.01572.53116.32
ZGn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.4230.0.2.0264.412
11-20 years ago0.21000.0.0.7460.943
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total2.9190.0.2.6185.57
ZHn/a0.0.0.0.0.0.0.0.
less than 10 years ago39.240.0.1.53740.63
11-20 years ago6.5170.0.0.0.6.517
21-30 years ago1.5380.0.0.21001.735
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.4370.0.0.0.1.437
total48.520.0.1.63550.22
Switzerlandn/a48.863.32521.5973.55
less than 10 years ago387.0210.314173.23570.51
11-20 years ago95.546.11883.85185.43
21-30 years ago37.275.61952.8695.64
31-40 years ago21.8103.32545.1670.25
41-50 years ago9.6142.03222.6934.27
over 50 years ago63.859.51484.25157.63
total663.8140.07483.311187.01
© WSL, Swiss National Forest Inventory, 19.06.2020 #852472/318803
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: 1000 ha
unit of evaluation: forest
grid: terrestrial grid NFI1
state1983/85
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.0.0.0.0.0.0.0.
less than 10 years ago37.930.0.0.93338.83
11-20 years ago6.2120.0.0.11006.312
21-30 years ago1.4260.0.0.11001.526
31-40 years ago0.4500.0.0.2710.641
41-50 years ago0.0.0.0.0.11000.1100
over 50 years ago0.6400.0.0.2710.835
total46.410.0.1.62548.01
AIn/a0.11000.0.0.0.0.1100
less than 10 years ago1.4220.0.1.6213.012
11-20 years ago0.5450.0.0.9301.424
21-30 years ago0.0.0.0.0.11000.1100
31-40 years ago0.11000.0.0.11000.271
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3570.0.0.0.0.357
total2.4170.0.2.7145.17
ARn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.2150.0.1.6234.810
11-20 years ago1.2270.0.1.0292.219
21-30 years ago0.0.0.0.0.3580.358
31-40 years ago0.11000.0.0.0.0.1100
41-50 years ago0.2720.0.0.0.0.272
over 50 years ago0.2710.0.0.11000.357
total4.9100.0.3.0157.94
BEn/a3.7160.3580.3584.315
less than 10 years ago64.331.72444.44110.42
11-20 years ago11.190.54515.7827.46
21-30 years ago4.5150.8355.51310.99
31-40 years ago1.6250.4502.0224.016
41-50 years ago0.5450.0.1.4271.923
over 50 years ago6.7120.4506.91214.08
total92.424.11576.33172.91
BL/BSn/a0.0.0.0.0.0.0.0.
less than 10 years ago13.160.3581.92315.35
11-20 years ago2.4200.11000.8353.316
21-30 years ago0.6410.0.0.3580.933
31-40 years ago0.2700.0.0.0.0.270
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.6380.0.0.11000.834
total17.040.4503.11720.52
FRn/a0.5450.0.0.11000.641
less than 10 years ago13.870.2717.11121.15
11-20 years ago5.3130.0.4.6139.89
21-30 years ago2.2210.0.1.2283.417
31-40 years ago1.0310.11001.3282.420
41-50 years ago0.0.0.0.0.2710.271
over 50 years ago2.1220.0.1.6253.716
total24.840.35816.2641.32
GEn/a0.11000.0.0.0.0.1100
less than 10 years ago1.0300.0.0.0.1.030
11-20 years ago0.3690.0.0.0.0.369
21-30 years ago1.0320.0.0.0.1.032
31-40 years ago0.6410.0.0.0.0.641
41-50 years ago0.11000.0.0.0.0.1100
over 50 years ago0.3690.0.0.0.0.369
total3.460.0.0.0.3.46
GLn/a1.6240.2710.5442.320
less than 10 years ago3.7150.8352.9187.59
11-20 years ago0.4500.3561.3272.021
21-30 years ago0.4500.2710.6401.228
31-40 years ago0.11000.0.0.9321.031
41-50 years ago0.11000.0.0.2710.358
over 50 years ago1.5250.3581.4263.217
total7.8101.9227.9917.64
GRn/a15.780.2713.71619.77
less than 10 years ago23.361.62535.0559.93
11-20 years ago8.6111.42713.4823.46
21-30 years ago4.7141.22910.9916.87
31-40 years ago5.6130.6418.71114.88
41-50 years ago2.3210.4505.7138.411
over 50 years ago16.381.82316.2834.35
total76.537.31293.42177.21
JUn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.170.4504.81419.35
11-20 years ago5.1130.3582.1217.511
21-30 years ago1.7240.0.1.0312.719
31-40 years ago0.6410.11000.2710.933
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago2.0220.2711.5253.716
total23.541.0319.7934.22
LUn/a0.11000.0.0.11000.271
less than 10 years ago25.140.11004.31429.53
11-20 years ago5.9120.0.1.5257.510
21-30 years ago0.9310.0.0.4501.326
31-40 years ago0.6410.11000.2700.933
41-50 years ago0.4490.0.0.0.0.449
over 50 years ago1.7230.0.0.5452.221
total34.830.2716.91141.92
NEn/a0.2700.11000.11000.449
less than 10 years ago18.350.0.2.61821.04
11-20 years ago4.1150.11000.5454.714
21-30 years ago0.6410.0.0.0.0.641
31-40 years ago0.5450.0.0.2710.738
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8350.11000.3571.229
total24.530.3583.71528.52
NWn/a0.3580.11000.3570.837
less than 10 years ago1.9220.2692.5184.611
11-20 years ago0.2690.0.0.8371.032
21-30 years ago0.11000.0.0.2710.358
31-40 years ago0.3580.11000.11000.543
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8370.0.0.2691.032
total3.7140.4494.1128.25
OWn/a0.3580.0.0.11000.450
less than 10 years ago4.9130.11003.6168.69
11-20 years ago0.9330.0.1.1302.121
21-30 years ago0.4500.11001.4281.823
31-40 years ago1.0330.11000.8351.923
41-50 years ago0.4500.0.0.8351.328
over 50 years ago1.4250.2721.6243.216
total9.480.5459.4819.33
SGn/a1.1300.4500.5452.122
less than 10 years ago14.770.83514.9730.44
11-20 years ago2.1220.2715.7138.011
21-30 years ago0.6410.2713.3174.115
31-40 years ago0.8350.0.2.7193.516
41-50 years ago0.3580.0.1.1301.427
over 50 years ago1.6260.2713.4175.214
total21.261.82331.6454.72
SHn/a0.2710.0.0.0.0.271
less than 10 years ago8.660.11000.3589.06
11-20 years ago1.9210.0.0.11002.021
21-30 years ago0.5450.0.0.0.0.545
31-40 years ago0.4480.0.0.11000.543
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.0.0.0.0.0.0.0.
total11.630.11000.54412.22
SOn/a0.0.0.0.0.0.0.0.
less than 10 years ago22.540.11002.12124.73
11-20 years ago3.6150.0.0.4504.015
21-30 years ago0.9330.11000.11001.130
31-40 years ago0.3580.11000.2710.641
41-50 years ago0.11000.0.0.0.0.1100
over 50 years ago0.7370.11000.2701.031
total28.130.4503.01731.62
SZn/a0.11000.11000.11000.357
less than 10 years ago7.1110.4497.21114.76
11-20 years ago2.1220.3571.9234.315
21-30 years ago1.2290.4501.8243.417
31-40 years ago0.7370.0.0.9331.624
41-50 years ago0.4500.0.0.2710.640
over 50 years ago1.9220.11000.9333.018
total13.571.42713.0727.92
TGn/a0.0.0.0.0.11000.1100
less than 10 years ago14.150.0.1.92116.04
11-20 years ago2.6180.0.0.2702.817
21-30 years ago0.0.0.0.0.2710.271
31-40 years ago0.0.0.0.0.11000.1100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3580.0.0.0.0.358
total17.030.0.2.41819.42
TIn/a9.5100.64112.5922.76
less than 10 years ago3.4170.73810.6914.88
11-20 years ago2.9181.1309.31013.38
21-30 years ago2.1221.2299.31012.68
31-40 years ago2.7191.32815.2819.27
41-50 years ago0.8350.6419.41010.89
over 50 years ago8.8102.81929.0540.64
total30.358.31195.42134.01
URn/a3.3170.7381.0315.014
less than 10 years ago1.4270.7382.7184.913
11-20 years ago1.1300.6440.8342.519
21-30 years ago0.3580.3580.5501.131
31-40 years ago0.3570.11000.3560.837
41-50 years ago0.2550.0.0.6440.835
over 50 years ago2.3200.9341.4274.614
total9.093.4167.31019.74
VDn/a2.5200.0.0.6413.118
less than 10 years ago42.140.2716.91249.23
11-20 years ago16.770.11004.51521.36
21-30 years ago4.2150.0.3.4177.611
31-40 years ago1.6250.4502.1224.215
41-50 years ago1.5260.0.0.4501.923
over 50 years ago5.2140.11003.2178.511
total73.820.83521.1695.81
VSn/a7.5110.4502.12210.010
less than 10 years ago7.8111.32814.3823.46
11-20 years ago5.0141.13012.4918.47
21-30 years ago3.3171.13012.8817.27
31-40 years ago2.1220.7389.11012.09
41-50 years ago1.0320.4503.2174.614
over 50 years ago11.992.02215.9729.85
total38.657.11269.72115.41
ZGn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.8140.0.2.0184.97
11-20 years ago0.4490.0.0.4490.733
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.11000.0.0.0.0.1100
total3.3120.0.2.4165.74
ZHn/a0.0.0.0.0.0.0.0.
less than 10 years ago39.130.0.0.83539.93
11-20 years ago7.2110.0.0.0.7.211
21-30 years ago1.2290.0.0.11001.327
31-40 years ago0.3580.0.0.0.0.358
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.1300.0.0.0.1.130
total48.910.0.0.93349.81
Switzerlandn/a46.853.21822.3772.34
less than 10 years ago390.019.910176.82576.71
11-20 years ago97.536.11379.63183.32
21-30 years ago32.955.71353.4492.13
31-40 years ago22.174.11645.5571.74
41-50 years ago8.5111.42723.2633.15
over 50 years ago69.349.31084.63163.22
total667.1139.85485.411192.20
© WSL, Swiss National Forest Inventory, 19.06.2020 #852473/318804
NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI2
state1993/95
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a2.1280.0.0.0.2.128
less than 10 years ago33.640.0.0.47133.94
11-20 years ago7.1140.0.0.5587.614
21-30 years ago1.6330.0.0.21001.831
31-40 years ago0.9440.0.0.0.0.944
41-50 years ago0.21000.0.0.4710.558
over 50 years ago0.6570.0.0.21000.750
total46.020.0.1.63347.62
AIn/a0.21000.0.0.3710.557
less than 10 years ago0.5550.0.1.1351.627
11-20 years ago0.8430.0.0.8441.629
21-30 years ago0.5580.0.0.4560.939
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.21000.0.0.21000.471
over 50 years ago0.21000.0.0.0.0.2100
total2.3230.0.2.8185.09
ARn/a0.4740.0.0.11000.560
less than 10 years ago2.5230.0.1.6294.116
11-20 years ago1.3360.0.0.9402.226
21-30 years ago0.5670.0.0.4550.945
31-40 years ago0.0.0.0.0.11000.1100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4740.0.0.0.0.474
total5.0120.0.3.1188.16
BEn/a5.6180.5584.91911.012
less than 10 years ago50.352.03033.4785.73
11-20 years ago18.990.94518.3938.06
21-30 years ago5.3180.21008.01413.511
31-40 years ago2.5270.5583.8226.816
41-50 years ago1.2380.4711.4353.024
over 50 years ago4.3200.0.5.0199.314
total88.234.52074.84167.41
BL/BSn/a0.6570.0.0.0.0.657
less than 10 years ago8.5120.31001.63310.410
11-20 years ago4.9180.21001.3376.415
21-30 years ago0.8510.0.0.4711.241
31-40 years ago0.9500.0.0.3711.241
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.31000.0.0.0.0.3100
total16.260.4733.62120.23
FRn/a2.0300.0.0.8452.825
less than 10 years ago14.590.0.5.41720.07
11-20 years ago5.6170.0.3.1238.813
21-30 years ago2.0310.0.2.9224.818
31-40 years ago1.4350.0.0.4721.832
41-50 years ago0.7500.0.0.6581.438
over 50 years ago1.2410.0.1.1412.229
total27.450.0.14.3941.73
GEn/a0.8530.0.0.0.0.853
less than 10 years ago0.8530.0.0.0.0.853
11-20 years ago0.0.0.0.0.0.0.0.
21-30 years ago0.31000.0.0.0.0.3100
31-40 years ago0.31000.0.0.0.0.3100
41-50 years ago0.8530.0.0.0.0.853
over 50 years ago0.0.0.0.0.0.0.0.
total2.8150.0.0.0.2.815
GLn/a0.5580.0.0.7501.237
less than 10 years ago2.5250.8432.6245.815
11-20 years ago1.7300.5581.4353.619
21-30 years ago0.4710.0.0.9441.338
31-40 years ago0.4720.4720.7501.435
41-50 years ago0.0.0.0.0.5580.558
over 50 years ago0.7500.4710.6501.731
total6.0152.1277.41315.56
GRn/a6.1170.3718.31414.810
less than 10 years ago18.191.23828.5747.95
11-20 years ago12.5111.04118.0931.67
21-30 years ago5.5180.7508.21414.411
31-40 years ago3.9210.7507.91512.411
41-50 years ago2.7260.21005.9178.814
over 50 years ago14.9111.33516.41032.67
total63.745.51793.33162.52
JUn/a1.3350.0.1.0402.426
less than 10 years ago9.5120.3703.92013.89
11-20 years ago7.4140.21002.72410.211
21-30 years ago2.1280.21001.2373.522
31-40 years ago0.9440.0.0.5581.435
41-50 years ago0.21000.21000.3710.750
over 50 years ago0.21000.21001.0401.435
total21.561.14010.71133.32
LUn/a2.7240.0.0.21002.923
less than 10 years ago17.480.0.2.72520.17
11-20 years ago9.5120.0.2.32711.811
21-30 years ago3.1240.0.1.0414.120
31-40 years ago0.5580.0.0.21000.750
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.4370.0.0.5581.931
total34.640.0.6.91541.42
NEn/a1.1410.0.0.11001.238
less than 10 years ago16.670.0.3.22219.86
11-20 years ago4.5190.0.0.11004.618
21-30 years ago1.3380.0.0.0.1.338
31-40 years ago0.3710.0.0.0.0.371
41-50 years ago0.21000.0.0.21000.472
over 50 years ago0.0.0.21000.11000.371
total24.040.21003.82027.93
NWn/a0.4720.21000.0.0.657
less than 10 years ago1.8310.11002.3274.317
11-20 years ago0.7560.0.0.6591.339
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.11000.11000.11000.453
over 50 years ago1.3400.0.0.21001.536
total4.3170.5583.3218.17
OWn/a1.1400.0.1.1412.228
less than 10 years ago3.4210.21002.9236.514
11-20 years ago2.0260.0.1.6333.620
21-30 years ago0.9450.0.0.9451.831
31-40 years ago0.5570.0.0.8491.337
41-50 years ago0.4710.0.0.6580.944
over 50 years ago1.6330.11001.4353.122
total10.0110.3729.21019.43
SGn/a1.5330.0.2.5254.120
less than 10 years ago11.7110.210011.31223.27
11-20 years ago5.5180.8507.21413.510
21-30 years ago0.9450.21003.0244.121
31-40 years ago0.4710.21001.7312.328
41-50 years ago1.0410.0.1.3382.328
over 50 years ago1.9310.21003.0245.118
total22.981.53530.1654.63
SHn/a0.4700.0.0.21000.657
less than 10 years ago7.6100.0.0.0.7.610
11-20 years ago3.4210.0.0.21003.620
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.21000.0.0.0.0.2100
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.0.0.0.0.0.0.0.
total11.830.0.0.55612.42
SOn/a1.8300.4710.0.2.227
less than 10 years ago18.470.21000.75019.36
11-20 years ago6.8150.21000.6517.614
21-30 years ago1.1360.0.0.11001.334
31-40 years ago0.7510.21000.21001.241
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.5590.21000.0.0.750
total29.431.2401.93032.52
SZn/a1.4350.0.1.2372.625
less than 10 years ago6.4150.8493.82011.010
11-20 years ago2.3280.0.3.3235.617
21-30 years ago1.4350.0.1.2382.625
31-40 years ago0.9450.11001.3372.327
41-50 years ago0.7500.0.0.8451.533
over 50 years ago1.3350.0.1.1412.426
total14.591.04412.6928.04
TGn/a0.5490.0.0.0.0.549
less than 10 years ago11.380.0.2.02813.37
11-20 years ago4.6170.0.0.3745.016
21-30 years ago0.7530.0.0.0.0.753
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3730.0.0.0.0.373
total17.340.0.2.32519.73
TIn/a2.4260.7507.11510.313
less than 10 years ago2.9250.21008.91412.012
11-20 years ago2.6260.5587.71510.813
21-30 years ago1.5350.7507.2159.413
31-40 years ago2.1290.5587.41510.013
41-50 years ago1.8321.33811.21214.311
over 50 years ago7.6153.62231.6742.85
total21.097.51581.13109.62
URn/a1.4350.21000.5562.028
less than 10 years ago2.1260.5583.0225.614
11-20 years ago0.6490.3710.6471.630
21-30 years ago1.0400.9440.3692.226
31-40 years ago0.0.0.21000.3710.557
41-50 years ago0.3710.0.0.21000.558
over 50 years ago1.3340.7500.9442.823
total6.8132.8245.81315.45
VDn/a4.8190.0.2.3267.215
less than 10 years ago36.860.21008.01445.05
11-20 years ago14.2100.0.3.52217.79
21-30 years ago8.4140.0.2.02910.412
31-40 years ago2.5260.0.1.5334.021
41-50 years ago1.4350.4711.0412.825
over 50 years ago4.6190.21002.4277.115
total72.830.75020.7894.22
VSn/a3.7220.4717.41511.512
less than 10 years ago6.5161.53314.31022.38
11-20 years ago4.2201.1418.91314.210
21-30 years ago3.5221.0418.91413.411
31-40 years ago2.4270.9458.91312.211
41-50 years ago1.8310.21007.1159.013
over 50 years ago6.9161.93015.11024.08
total29.077.01570.53106.52
ZGn/a0.0.0.0.0.21000.2100
less than 10 years ago2.6200.0.1.3303.913
11-20 years ago0.3730.0.0.7471.039
21-30 years ago0.0.0.0.0.3680.368
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total3.1170.0.2.6195.76
ZHn/a2.7250.0.0.0.2.725
less than 10 years ago34.740.0.1.23735.94
11-20 years ago7.5140.0.0.21007.714
21-30 years ago2.1280.0.0.0.2.128
31-40 years ago0.5570.0.0.21000.750
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3700.0.0.0.0.370
total47.920.0.1.63349.41
Switzerlandn/a45.562.82638.9787.24
less than 10 years ago321.128.514144.23473.81
11-20 years ago128.835.71884.94219.43
21-30 years ago44.763.82147.8696.34
31-40 years ago22.193.72236.2762.05
41-50 years ago14.2112.72631.9748.86
over 50 years ago51.969.01480.54141.43
total628.4136.17464.411128.91
© WSL, Swiss National Forest Inventory, 19.06.2020 #852474/318805
NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
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
state1993/95
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.0.0.0.0.0.0.0.
less than 10 years ago34.040.0.0.47134.44
11-20 years ago7.6140.0.0.6588.214
21-30 years ago1.8330.0.0.21002.031
31-40 years ago0.8500.0.0.0.0.850
41-50 years ago0.21000.0.0.4710.658
over 50 years ago0.4710.0.0.21000.658
total44.920.0.1.83346.72
AIn/a0.0.0.0.0.0.0.0.
less than 10 years ago0.4680.0.1.1381.531
11-20 years ago0.9420.0.1.0431.927
21-30 years ago0.6580.0.0.5571.139
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.21000.0.0.21000.471
over 50 years ago0.21000.0.0.0.0.2100
total2.3250.0.2.8205.19
ARn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.9220.0.1.2384.117
11-20 years ago1.5350.0.1.0392.525
21-30 years ago0.5670.0.0.5551.044
31-40 years ago0.0.0.0.0.21000.2100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4730.0.0.0.0.473
total5.3130.0.2.8208.16
BEn/a0.0.0.0.0.0.0.0.
less than 10 years ago49.452.23033.4785.04
11-20 years ago20.991.04519.9941.86
21-30 years ago5.8180.21009.01415.011
31-40 years ago2.4290.6583.8236.817
41-50 years ago1.4380.4711.4383.225
over 50 years ago3.6230.0.5.6199.214
total83.544.42173.24161.11
BL/BSn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.9140.31001.1449.212
11-20 years ago5.5170.21001.5377.114
21-30 years ago0.9510.0.0.4711.341
31-40 years ago0.9500.0.0.4711.341
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.31000.0.0.0.0.3100
total15.760.5723.42319.64
FRn/a0.0.0.0.0.0.0.0.
less than 10 years ago13.9100.0.5.41819.38
11-20 years ago6.1180.0.3.5239.613
21-30 years ago2.2310.0.3.0225.218
31-40 years ago1.6350.0.0.4722.032
41-50 years ago0.8500.0.0.5711.341
over 50 years ago1.3410.0.1.0452.330
total25.950.0.13.81039.73
GEn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.2500.0.0.0.1.250
11-20 years ago0.0.0.0.0.0.0.0.
21-30 years ago0.41000.0.0.0.0.4100
31-40 years ago0.41000.0.0.0.0.4100
41-50 years ago1.2500.0.0.0.1.250
over 50 years ago0.0.0.0.0.0.0.0.
total3.1130.0.0.0.3.113
GLn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.6350.9432.1294.718
11-20 years ago1.9290.6571.5344.019
21-30 years ago0.4710.0.1.0441.437
31-40 years ago0.4710.4710.8501.634
41-50 years ago0.0.0.0.0.6570.657
over 50 years ago0.6580.4710.5571.534
total4.9182.3276.61413.87
GRn/a0.4710.0.0.0.0.471
less than 10 years ago17.1101.24126.6844.96
11-20 years ago12.6121.24118.71032.47
21-30 years ago4.8200.8509.11414.711
31-40 years ago3.6230.8508.31512.612
41-50 years ago2.4290.21006.5179.214
over 50 years ago13.3121.14115.81130.37
total54.255.31985.03144.52
JUn/a0.0.0.0.0.0.0.0.
less than 10 years ago9.6130.4703.92113.910
11-20 years ago8.0140.21003.12411.311
21-30 years ago2.3280.21001.4373.921
31-40 years ago1.0440.0.0.6571.635
41-50 years ago0.21000.21000.4710.850
over 50 years ago0.21000.21001.0441.437
total21.361.24010.31232.83
LUn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.880.0.3.12519.87
11-20 years ago10.4120.0.2.62713.010
21-30 years ago3.1250.0.1.1404.221
31-40 years ago0.6570.0.0.21000.850
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.1440.0.0.4711.537
total31.940.0.7.41539.43
NEn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.770.0.3.12319.86
11-20 years ago4.8190.0.0.21005.019
21-30 years ago1.3410.0.0.0.1.341
31-40 years ago0.4710.0.0.0.0.471
41-50 years ago0.31000.0.0.21000.572
over 50 years ago0.0.0.21000.21000.472
total23.450.21003.62127.33
NWn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.8330.0.2.4284.219
11-20 years ago0.5710.0.0.7591.243
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.21000.21000.21000.552
over 50 years ago1.0490.0.0.31001.243
total3.5210.21003.5217.29
OWn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.4230.21003.1246.714
11-20 years ago2.3270.0.1.8334.119
21-30 years ago1.0450.0.1.0452.031
31-40 years ago0.4700.0.0.7581.144
41-50 years ago0.4710.0.0.7571.144
over 50 years ago1.6350.11001.5353.223
total9.1120.3728.71118.14
SGn/a0.0.0.0.0.0.0.0.
less than 10 years ago11.0130.210010.11321.28
11-20 years ago5.5180.8508.01414.310
21-30 years ago0.8500.21002.8273.823
31-40 years ago0.4710.21002.0312.728
41-50 years ago1.1410.0.1.4382.627
over 50 years ago1.3410.0.2.8274.222
total20.191.53827.2748.84
SHn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.7110.0.0.0.7.711
11-20 years ago3.8200.0.0.21004.019
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.21000.0.0.0.0.2100
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOn/a0.0.0.0.0.0.0.0.
less than 10 years ago18.570.21000.85019.57
11-20 years ago7.6150.21000.7518.514
21-30 years ago1.0390.0.0.21001.236
31-40 years ago0.8510.21000.21001.341
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.6590.21000.0.0.850
total28.530.9502.13031.62
SZn/a0.0.0.0.0.0.0.0.
less than 10 years ago6.6160.7563.42310.711
11-20 years ago2.2300.0.3.6225.817
21-30 years ago1.4380.0.1.3372.726
31-40 years ago1.0450.0.1.2392.229
41-50 years ago0.8500.0.0.8501.634
over 50 years ago1.5350.0.1.0452.527
total13.5100.75611.41125.54
TGn/a0.0.0.0.0.0.0.0.
less than 10 years ago11.290.0.2.02813.27
11-20 years ago5.0170.0.0.4735.316
21-30 years ago0.7520.0.0.0.0.752
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3720.0.0.0.0.372
total17.250.0.2.42619.63
TIn/a0.21000.0.0.0.0.2100
less than 10 years ago2.7280.21007.11710.014
11-20 years ago1.4380.6587.9169.914
21-30 years ago1.2410.8508.01510.014
31-40 years ago2.2300.6588.21511.013
41-50 years ago1.7351.43812.01215.011
over 50 years ago7.0163.72333.1743.76
total16.3107.31676.3399.92
URn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.2400.6582.9244.718
11-20 years ago0.7490.4710.8461.930
21-30 years ago1.2400.6570.4692.228
31-40 years ago0.0.0.21000.4690.656
41-50 years ago0.4720.0.0.21000.658
over 50 years ago1.3370.6581.0442.924
total4.8182.4275.71512.96
VDn/a0.0.0.0.0.0.0.0.
less than 10 years ago35.160.0.8.51543.65
11-20 years ago15.5100.0.3.82219.39
21-30 years ago9.4140.0.2.32911.812
31-40 years ago2.2300.0.1.6353.723
41-50 years ago1.2410.4711.2412.726
over 50 years ago4.0220.21002.3296.517
total67.530.65819.6987.72
VSn/a0.0.0.0.0.4710.471
less than 10 years ago5.9181.53513.61121.09
11-20 years ago3.6230.8509.61314.011
21-30 years ago3.4241.1419.41414.011
31-40 years ago2.3301.04510.01313.411
41-50 years ago1.5350.21008.0159.714
over 50 years ago7.7162.23016.71026.68
total24.586.81667.7499.02
ZGn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.3240.0.1.5293.815
11-20 years ago0.4720.0.0.6571.044
21-30 years ago0.0.0.0.0.4670.467
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total2.9190.0.2.5205.48
ZHn/a0.0.0.0.0.0.0.0.
less than 10 years ago34.940.0.1.24136.24
11-20 years ago8.6140.0.0.21008.814
21-30 years ago2.6280.0.0.0.2.628
31-40 years ago0.7570.0.0.21000.850
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4700.0.0.0.0.470
total47.120.0.1.63548.82
Switzerlandn/a0.6580.0.0.4710.945
less than 10 years ago313.728.615138.24460.52
11-20 years ago137.446.01891.74235.23
21-30 years ago46.763.92252.26102.84
31-40 years ago22.2104.12239.2765.55
41-50 years ago14.5123.02634.8752.36
over 50 years ago48.368.91583.45140.63
total583.4134.57439.921057.81
© WSL, Swiss National Forest Inventory, 19.06.2020 #852475/318806
NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1993/95
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.21000.0.0.0.0.2100
less than 10 years ago34.640.0.0.47135.04
11-20 years ago7.8140.0.0.6588.414
21-30 years ago1.8330.0.0.21002.031
31-40 years ago1.0440.0.0.0.1.044
41-50 years ago0.21000.0.0.4710.658
over 50 years ago0.6570.0.0.21000.850
total46.320.0.1.83348.12
AIn/a0.0.0.0.0.0.0.0.
less than 10 years ago0.4680.0.1.1381.531
11-20 years ago0.9420.0.1.0431.927
21-30 years ago0.6580.0.0.5571.139
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.21000.0.0.21000.471
over 50 years ago0.21000.0.0.0.0.2100
total2.3250.0.2.8205.19
ARn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.9220.0.1.2384.117
11-20 years ago1.5350.0.1.0392.525
21-30 years ago0.5670.0.0.5551.044
31-40 years ago0.0.0.0.0.21000.2100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4730.0.0.0.0.473
total5.3130.0.2.8208.16
BEn/a1.0450.0.0.21001.241
less than 10 years ago50.452.23034.6787.24
11-20 years ago21.391.04520.5942.86
21-30 years ago6.0180.21009.01415.211
31-40 years ago2.7270.6584.2227.616
41-50 years ago1.4380.4711.6353.424
over 50 years ago4.8200.0.5.61910.414
total87.744.42175.84167.91
BL/BSn/a0.0.0.0.0.0.0.0.
less than 10 years ago8.2130.31001.4409.911
11-20 years ago5.5170.21001.5377.114
21-30 years ago0.9510.0.0.4711.341
31-40 years ago0.9500.0.0.4711.341
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.31000.0.0.0.0.3100
total16.160.5723.62220.23
FRn/a0.21000.0.0.0.0.2100
less than 10 years ago14.7100.0.5.61820.38
11-20 years ago6.3170.0.3.5239.813
21-30 years ago2.2310.0.3.2215.418
31-40 years ago1.6350.0.0.4722.032
41-50 years ago0.8500.0.0.7581.538
over 50 years ago1.3410.0.1.2412.529
total27.150.0.14.6941.73
GEn/a0.41000.0.0.0.0.4100
less than 10 years ago1.2500.0.0.0.1.250
11-20 years ago0.0.0.0.0.0.0.0.
21-30 years ago0.41000.0.0.0.0.4100
31-40 years ago0.41000.0.0.0.0.4100
41-50 years ago1.2500.0.0.0.1.250
over 50 years ago0.0.0.0.0.0.0.0.
total3.520.0.0.0.3.52
GLn/a0.21000.0.0.0.0.2100
less than 10 years ago2.0310.9432.3275.217
11-20 years ago1.9290.6571.5344.019
21-30 years ago0.4710.0.1.0441.437
31-40 years ago0.4710.4710.8501.634
41-50 years ago0.0.0.0.0.6570.657
over 50 years ago0.8500.4710.7491.931
total5.7172.3276.91414.96
GRn/a1.2410.0.1.4382.628
less than 10 years ago18.5101.24127.8847.66
11-20 years ago14.0111.24120.4935.67
21-30 years ago6.2180.8509.31416.311
31-40 years ago4.3210.8508.91514.011
41-50 years ago3.1260.21006.71710.014
over 50 years ago16.7101.53518.61036.97
total64.155.71893.23162.92
JUn/a0.4710.0.0.0.0.471
less than 10 years ago9.8120.4703.92114.110
11-20 years ago8.2140.21003.12411.511
21-30 years ago2.3280.21001.4373.921
31-40 years ago1.0440.0.0.6571.635
41-50 years ago0.21000.21000.4710.850
over 50 years ago0.21000.21001.2401.635
total22.161.24010.51233.73
LUn/a0.21000.0.0.0.0.2100
less than 10 years ago17.280.0.3.12520.27
11-20 years ago10.6120.0.2.62713.210
21-30 years ago3.4240.0.1.1404.620
31-40 years ago0.6570.0.0.21000.850
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.5370.0.0.6582.131
total33.540.0.7.61541.22
NEn/a0.21000.0.0.0.0.2100
less than 10 years ago16.970.0.3.32320.26
11-20 years ago5.1190.0.0.21005.218
21-30 years ago1.4380.0.0.0.1.438
31-40 years ago0.4710.0.0.0.0.471
41-50 years ago0.31000.0.0.21000.572
over 50 years ago0.0.0.21000.21000.472
total24.250.21003.82128.33
NWn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.8330.0.2.4284.219
11-20 years ago0.8560.0.0.7591.539
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.21000.21000.21000.552
over 50 years ago1.4390.0.0.31001.736
total4.3180.21003.5218.08
OWn/a0.21000.0.0.0.0.2100
less than 10 years ago3.6220.21003.1246.914
11-20 years ago2.3270.0.1.8334.119
21-30 years ago1.0450.0.1.0452.031
31-40 years ago0.6570.0.0.9491.537
41-50 years ago0.4710.0.0.7571.144
over 50 years ago1.8330.11001.5353.422
total9.9110.3728.91119.14
SGn/a0.7580.0.0.21000.950
less than 10 years ago11.6120.210010.91322.68
11-20 years ago6.1170.8508.31415.210
21-30 years ago1.0450.21003.5244.721
31-40 years ago0.4710.21002.0312.728
41-50 years ago1.1410.0.1.4382.627
over 50 years ago2.2310.21003.4245.918
total23.181.73529.8654.53
SHn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.7110.0.0.0.7.711
11-20 years ago3.8200.0.0.21004.019
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.21000.0.0.0.0.2100
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOn/a0.0.0.0.0.0.0.0.
less than 10 years ago18.970.21000.85019.97
11-20 years ago7.7140.21000.7518.713
21-30 years ago1.2360.0.0.21001.433
31-40 years ago0.8510.21000.21001.341
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.6590.21000.0.0.850
total29.330.9502.13032.32
SZn/a0.0.0.0.0.0.0.0.
less than 10 years ago6.8150.7563.82111.211
11-20 years ago2.6270.0.3.6226.217
21-30 years ago1.6350.0.1.3372.925
31-40 years ago1.0450.21001.4372.627
41-50 years ago0.8500.0.1.0451.833
over 50 years ago1.5350.0.1.2412.726
total14.390.84912.41027.54
TGn/a0.11000.0.0.0.0.1100
less than 10 years ago11.390.0.2.02813.47
11-20 years ago5.0170.0.0.4735.316
21-30 years ago0.7520.0.0.0.0.752
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3720.0.0.0.0.372
total17.550.0.2.42619.93
TIn/a0.21000.0.0.8501.045
less than 10 years ago3.1260.21008.51511.813
11-20 years ago2.9260.6588.31511.813
21-30 years ago1.6350.8508.21510.613
31-40 years ago2.4290.6588.21511.213
41-50 years ago2.0321.43812.61216.010
over 50 years ago8.5154.12235.2647.85
total20.797.61681.83110.12
URn/a0.4710.0.0.0.0.471
less than 10 years ago1.8310.6583.0235.516
11-20 years ago0.7490.4710.8461.930
21-30 years ago1.2401.0450.4692.626
31-40 years ago0.0.0.21000.4690.656
41-50 years ago0.4720.0.0.21000.658
over 50 years ago1.5340.8501.0443.322
total6.0153.0245.81514.85
VDn/a0.8500.0.0.0.0.850
less than 10 years ago37.260.0.8.81446.05
11-20 years ago16.1100.0.3.82219.99
21-30 years ago9.6140.0.2.32911.912
31-40 years ago2.8260.0.1.7334.521
41-50 years ago1.6350.4711.2413.125
over 50 years ago5.2190.21002.7268.115
total73.330.65820.5994.52
VSn/a0.8500.0.0.6581.438
less than 10 years ago6.5171.73314.01122.29
11-20 years ago4.8201.24110.01316.010
21-30 years ago4.0221.14110.11315.211
31-40 years ago2.7271.04510.01313.811
41-50 years ago2.0310.21008.01510.213
over 50 years ago7.9162.23017.11027.28
total28.877.41669.73105.92
ZGn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.3240.0.1.5293.815
11-20 years ago0.4720.0.0.8471.139
21-30 years ago0.0.0.0.0.4670.467
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total2.9190.0.2.6185.57
ZHn/a0.0.0.0.0.0.0.0.
less than 10 years ago36.040.0.1.24137.24
11-20 years ago8.8140.0.0.21009.014
21-30 years ago2.6280.0.0.0.2.628
31-40 years ago0.7570.0.0.21000.850
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4700.0.0.0.0.470
total48.420.0.1.63550.01
Switzerlandn/a7.1170.0.3.22510.314
less than 10 years ago325.328.815144.93479.02
11-20 years ago145.336.41895.34247.03
21-30 years ago50.764.32154.06109.04
31-40 years ago25.094.22240.8770.15
41-50 years ago16.3113.02636.2755.46
over 50 years ago58.4610.11490.74159.23
total628.1136.97465.121130.11
© WSL, Swiss National Forest Inventory, 19.06.2020 #852476/318807
NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state1993/95
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.21000.0.0.0.0.2100
less than 10 years ago34.640.0.0.47135.04
11-20 years ago7.8140.0.0.6588.414
21-30 years ago1.8330.0.0.21002.031
31-40 years ago1.0440.0.0.0.1.044
41-50 years ago0.21000.0.0.4710.658
over 50 years ago0.6570.0.0.21000.850
total46.320.0.1.83348.12
AIn/a0.0.0.0.0.0.0.0.
less than 10 years ago0.4680.0.1.1381.531
11-20 years ago0.9420.0.1.0431.927
21-30 years ago0.6580.0.0.5571.139
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.21000.0.0.21000.471
over 50 years ago0.21000.0.0.0.0.2100
total2.3250.0.2.8205.19
ARn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.9220.0.1.2384.117
11-20 years ago1.5350.0.1.0392.525
21-30 years ago0.5670.0.0.5551.044
31-40 years ago0.0.0.0.0.21000.2100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4730.0.0.0.0.473
total5.3130.0.2.8208.16
BEn/a7.1170.21001.8339.115
less than 10 years ago50.452.23034.6787.24
11-20 years ago21.391.04520.5942.86
21-30 years ago6.0180.21009.01415.211
31-40 years ago2.7270.6584.2227.616
41-50 years ago1.4380.4711.6353.424
over 50 years ago4.8200.0.5.81810.613
total93.834.62177.64176.01
BL/BSn/a0.21000.0.0.0.0.2100
less than 10 years ago8.2130.31001.4409.911
11-20 years ago5.5170.21001.5377.114
21-30 years ago0.9510.0.0.4711.341
31-40 years ago0.9500.0.0.4711.341
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.31000.0.0.0.0.3100
total16.360.5723.62220.43
FRn/a1.0450.0.0.0.1.045
less than 10 years ago14.7100.0.5.61820.38
11-20 years ago6.3170.0.3.5239.813
21-30 years ago2.2310.0.3.2215.418
31-40 years ago1.6350.0.0.4722.032
41-50 years ago0.8500.0.0.7581.538
over 50 years ago1.3410.0.1.2412.529
total28.050.0.14.6942.52
GEn/a0.6750.0.0.0.0.675
less than 10 years ago1.2500.0.0.0.1.250
11-20 years ago0.0.0.0.0.0.0.0.
21-30 years ago0.41000.0.0.0.0.4100
31-40 years ago0.41000.0.0.0.0.4100
41-50 years ago1.2500.0.0.0.1.250
over 50 years ago0.0.0.0.0.0.0.0.
total3.750.0.0.0.3.75
GLn/a3.7220.21001.1435.019
less than 10 years ago2.0310.9432.3275.217
11-20 years ago1.9290.6571.5344.019
21-30 years ago0.4710.0.1.0441.437
31-40 years ago0.4710.4710.8501.634
41-50 years ago0.0.0.0.0.6570.657
over 50 years ago0.8500.4710.7491.931
total9.2132.5258.01219.75
GRn/a21.2100.4715.71827.38
less than 10 years ago18.5101.24127.8847.66
11-20 years ago14.0111.24120.4935.67
21-30 years ago6.2180.8509.31416.311
31-40 years ago4.3210.8508.91514.011
41-50 years ago3.1260.21006.71710.014
over 50 years ago16.7101.73318.61037.17
total84.146.31797.53187.81
JUn/a0.4710.0.0.0.0.471
less than 10 years ago9.8120.4703.92114.110
11-20 years ago8.2140.21003.12411.511
21-30 years ago2.3280.21001.4373.921
31-40 years ago1.0440.0.0.6571.635
41-50 years ago0.21000.21000.4710.850
over 50 years ago0.21000.21001.2401.635
total22.161.24010.51233.73
LUn/a1.0450.0.0.21001.241
less than 10 years ago17.280.0.3.12520.27
11-20 years ago10.6120.0.2.62713.210
21-30 years ago3.4240.0.1.1404.620
31-40 years ago0.6570.0.0.21000.850
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.5370.0.0.8502.330
total34.340.0.8.01442.42
NEn/a0.21000.0.0.21000.371
less than 10 years ago16.970.0.3.32320.26
11-20 years ago5.1190.0.0.21005.218
21-30 years ago1.4380.0.0.0.1.438
31-40 years ago0.4710.0.0.0.0.471
41-50 years ago0.31000.0.0.21000.572
over 50 years ago0.0.0.21000.21000.472
total24.250.21004.02028.43
NWn/a0.21000.0.0.0.0.2100
less than 10 years ago1.8330.0.2.4284.219
11-20 years ago0.8560.0.0.7591.539
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.21000.21000.21000.552
over 50 years ago1.4390.0.0.31001.736
total4.4170.21003.5218.17
OWn/a0.21000.0.0.21000.470
less than 10 years ago3.6220.21003.2237.014
11-20 years ago2.3270.0.1.8334.119
21-30 years ago1.0450.0.1.0452.031
31-40 years ago0.6570.0.0.9491.537
41-50 years ago0.4710.0.0.7571.144
over 50 years ago1.8330.11001.5353.422
total9.9110.3729.31119.54
SGn/a3.2250.7572.7276.617
less than 10 years ago11.6120.210010.91322.68
11-20 years ago6.1170.8508.31415.210
21-30 years ago1.0450.21003.5244.721
31-40 years ago0.4710.21002.0312.728
41-50 years ago1.1410.0.1.4382.627
over 50 years ago2.2310.21003.4245.918
total25.782.43032.2660.33
SHn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.7110.0.0.0.7.711
11-20 years ago3.8200.0.0.21004.019
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.21000.0.0.0.0.2100
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOn/a0.0.0.0.0.0.0.0.
less than 10 years ago18.970.21000.85019.97
11-20 years ago7.7140.21000.7518.713
21-30 years ago1.2360.0.0.21001.433
31-40 years ago0.8510.21000.21001.341
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.6590.21000.0.0.850
total29.330.9502.13032.32
SZn/a0.8500.0.0.4711.340
less than 10 years ago6.8150.7563.82111.211
11-20 years ago2.6270.0.3.6226.217
21-30 years ago1.6350.0.1.3372.925
31-40 years ago1.0450.21001.4372.627
41-50 years ago0.8500.0.1.0451.833
over 50 years ago1.5350.0.1.2412.726
total15.190.84912.81028.73
TGn/a0.11000.0.0.0.0.1100
less than 10 years ago11.390.0.2.02813.47
11-20 years ago5.0170.0.0.4735.316
21-30 years ago0.7520.0.0.0.0.752
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3720.0.0.0.0.372
total17.550.0.2.42619.93
TIn/a12.3121.04416.21129.58
less than 10 years ago3.1260.21008.51511.813
11-20 years ago2.9260.6588.31511.813
21-30 years ago1.6350.8508.21510.613
31-40 years ago2.4290.6588.21511.213
41-50 years ago2.0321.43812.71216.210
over 50 years ago8.5154.12235.4648.05
total32.878.61597.63139.02
URn/a3.4240.6580.6584.620
less than 10 years ago1.8310.6583.0235.516
11-20 years ago0.7490.4710.8461.930
21-30 years ago1.2401.0450.4692.626
31-40 years ago0.0.0.21000.4690.656
41-50 years ago0.4720.0.0.21000.658
over 50 years ago1.6320.8501.0443.522
total9.2123.6226.41419.25
VDn/a3.4240.0.0.6584.022
less than 10 years ago37.460.0.8.81446.25
11-20 years ago16.1100.0.3.82219.99
21-30 years ago9.6140.0.2.32911.912
31-40 years ago2.8260.0.1.7334.521
41-50 years ago1.6350.4711.2413.125
over 50 years ago5.2190.21002.7268.115
total76.130.65821.1897.92
VSn/a8.3150.6583.72312.612
less than 10 years ago6.5171.73314.21122.49
11-20 years ago4.8201.24110.01316.010
21-30 years ago4.0221.14110.11315.211
31-40 years ago2.7271.04510.01313.811
41-50 years ago2.0310.21008.01510.213
over 50 years ago7.9162.23017.11027.28
total36.278.01573.03117.32
ZGn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.3240.0.1.5293.815
11-20 years ago0.4720.0.0.8471.139
21-30 years ago0.0.0.0.0.4670.467
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total2.9190.0.2.6185.57
ZHn/a0.0.0.0.0.0.0.0.
less than 10 years ago36.040.0.1.24137.24
11-20 years ago8.8140.0.0.21009.014
21-30 years ago2.6280.0.0.0.2.628
31-40 years ago0.7570.0.0.21000.850
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4700.0.0.0.0.470
total48.420.0.1.63550.01
Switzerlandn/a67.553.72433.38104.54
less than 10 years ago325.628.815145.23479.62
11-20 years ago145.336.41895.34247.03
21-30 years ago50.764.32154.06109.04
31-40 years ago25.094.22240.8770.15
41-50 years ago16.3113.02636.3755.66
over 50 years ago58.6610.31491.34160.13
total688.8140.87496.311226.00
© WSL, Swiss National Forest Inventory, 19.06.2020 #852477/318808
NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: 1000 ha
unit of evaluation: forest
grid: terrestrial grid NFI2
state1993/95
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a2.1280.0.0.0.2.128
less than 10 years ago33.640.0.0.47133.94
11-20 years ago7.1140.0.0.5587.614
21-30 years ago1.6330.0.0.21001.831
31-40 years ago0.9440.0.0.0.0.944
41-50 years ago0.21000.0.0.4710.558
over 50 years ago0.6570.0.0.21000.750
total46.020.0.1.63347.62
AIn/a0.21000.0.0.3710.557
less than 10 years ago0.5550.0.1.1351.627
11-20 years ago0.8430.0.0.8441.629
21-30 years ago0.5580.0.0.4560.939
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.21000.0.0.21000.471
over 50 years ago0.21000.0.0.0.0.2100
total2.3230.0.2.8185.09
ARn/a0.4740.0.0.11000.560
less than 10 years ago2.5230.0.1.6294.116
11-20 years ago1.3360.0.0.9402.226
21-30 years ago0.5670.0.0.4550.945
31-40 years ago0.0.0.0.0.11000.1100
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.4740.0.0.0.0.474
total5.0120.0.3.1188.16
BEn/a12.3120.7506.51619.59
less than 10 years ago50.352.03033.4785.73
11-20 years ago18.990.94518.3938.06
21-30 years ago5.3180.21008.01413.511
31-40 years ago2.5270.5583.8226.816
41-50 years ago1.2380.4711.4353.024
over 50 years ago4.3200.0.5.2189.513
total94.834.71976.54176.01
BL/BSn/a0.8490.0.0.0.0.849
less than 10 years ago8.5120.31001.63310.410
11-20 years ago4.9180.21001.3376.415
21-30 years ago0.8510.0.0.4711.241
31-40 years ago0.9500.0.0.3711.241
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.31000.0.0.0.0.3100
total16.460.4733.62120.53
FRn/a2.9250.0.0.8453.822
less than 10 years ago14.590.0.5.41720.07
11-20 years ago5.6170.0.3.1238.813
21-30 years ago2.0310.0.2.9224.818
31-40 years ago1.4350.0.0.4721.832
41-50 years ago0.7500.0.0.6581.438
over 50 years ago1.2410.0.1.1412.229
total28.350.0.14.3942.72
GEn/a0.9470.0.0.0.0.947
less than 10 years ago0.8530.0.0.0.0.853
11-20 years ago0.0.0.0.0.0.0.0.
21-30 years ago0.31000.0.0.0.0.3100
31-40 years ago0.31000.0.0.0.0.3100
41-50 years ago0.8530.0.0.0.0.853
over 50 years ago0.0.0.0.0.0.0.0.
total2.9150.0.0.0.2.915
GLn/a3.8210.21001.7325.717
less than 10 years ago2.5250.8432.6245.815
11-20 years ago1.7300.5581.4353.619
21-30 years ago0.4710.0.0.9441.338
31-40 years ago0.4720.4720.7501.435
41-50 years ago0.0.0.0.0.5580.558
over 50 years ago0.7500.4710.6501.731
total9.4122.2268.41120.04
GRn/a26.380.75012.71139.76
less than 10 years ago18.191.23828.5747.95
11-20 years ago12.5111.04118.0931.67
21-30 years ago5.5180.7508.21414.411
31-40 years ago3.9210.7507.91512.411
41-50 years ago2.7260.21005.9178.814
over 50 years ago14.9111.53316.41032.87
total83.946.01797.63187.51
JUn/a1.3350.0.1.0402.426
less than 10 years ago9.5120.3703.92013.89
11-20 years ago7.4140.21002.72410.211
21-30 years ago2.1280.21001.2373.522
31-40 years ago0.9440.0.0.5581.435
41-50 years ago0.21000.21000.3710.750
over 50 years ago0.21000.21001.0401.435
total21.561.14010.71133.32
LUn/a3.4220.0.0.3713.721
less than 10 years ago17.480.0.2.72520.17
11-20 years ago9.5120.0.2.32711.811
21-30 years ago3.1240.0.1.0414.120
31-40 years ago0.5580.0.0.21000.750
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.4370.0.0.7502.030
total35.340.0.7.21442.52
NEn/a1.3370.0.0.3701.633
less than 10 years ago16.670.0.3.22219.86
11-20 years ago4.5190.0.0.11004.618
21-30 years ago1.3380.0.0.0.1.338
31-40 years ago0.3710.0.0.0.0.371
41-50 years ago0.21000.0.0.21000.472
over 50 years ago0.0.0.21000.11000.371
total24.240.21003.91928.33
NWn/a0.5580.4710.0.0.944
less than 10 years ago1.8310.11002.3274.317
11-20 years ago0.7560.0.0.6591.339
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.11000.11000.11000.453
over 50 years ago1.3400.0.0.21001.536
total4.4160.7503.3218.46
OWn/a1.1400.0.1.2382.327
less than 10 years ago3.4210.21003.1226.714
11-20 years ago2.0260.0.1.6333.620
21-30 years ago0.9450.0.0.9451.831
31-40 years ago0.5570.0.0.8491.337
41-50 years ago0.4710.0.0.6580.944
over 50 years ago1.6330.11001.4353.122
total10.0110.3729.51019.73
SGn/a4.2200.6574.9189.713
less than 10 years ago11.7110.210011.31223.27
11-20 years ago5.5180.8507.21413.510
21-30 years ago0.9450.21003.0244.121
31-40 years ago0.4710.21001.7312.328
41-50 years ago1.0410.0.1.3382.328
over 50 years ago1.9310.21003.0245.118
total25.672.13032.5560.22
SHn/a0.4700.0.0.21000.657
less than 10 years ago7.6100.0.0.0.7.610
11-20 years ago3.4210.0.0.21003.620
21-30 years ago0.0.0.0.0.21000.2100
31-40 years ago0.21000.0.0.0.0.2100
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.0.0.0.0.0.0.0.
total11.830.0.0.55612.42
SOn/a1.8300.4710.0.2.227
less than 10 years ago18.470.21000.75019.36
11-20 years ago6.8150.21000.6517.614
21-30 years ago1.1360.0.0.11001.334
31-40 years ago0.7510.21000.21001.241
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.5590.21000.0.0.750
total29.431.2401.93032.52
SZn/a2.3270.0.1.5333.921
less than 10 years ago6.4150.8493.82011.010
11-20 years ago2.3280.0.3.3235.617
21-30 years ago1.4350.0.1.2382.625
31-40 years ago0.9450.11001.3372.327
41-50 years ago0.7500.0.0.8451.533
over 50 years ago1.3350.0.1.1412.426
total15.491.04412.9929.33
TGn/a0.5490.0.0.0.0.549
less than 10 years ago11.380.0.2.02813.37
11-20 years ago4.6170.0.0.3745.016
21-30 years ago0.7530.0.0.0.0.753
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3730.0.0.0.0.373
total17.340.0.2.32519.73
TIn/a14.4111.93021.8838.26
less than 10 years ago2.9250.21008.91412.012
11-20 years ago2.6260.5587.71510.813
21-30 years ago1.5350.7507.2159.413
31-40 years ago2.1290.5587.41510.013
41-50 years ago1.8321.33811.41214.510
over 50 years ago7.6153.62231.7743.05
total32.978.81496.23137.91
URn/a4.6190.7491.0406.316
less than 10 years ago2.1260.5583.0225.614
11-20 years ago0.6490.3710.6471.630
21-30 years ago1.0400.9440.3692.226
31-40 years ago0.0.0.21000.3710.557
41-50 years ago0.3710.0.0.21000.558
over 50 years ago1.5320.7500.9443.022
total10.1113.3216.41319.85
VDn/a7.3150.0.2.82410.213
less than 10 years ago37.060.21008.01445.25
11-20 years ago14.2100.0.3.52217.79
21-30 years ago8.4140.0.2.02910.412
31-40 years ago2.5260.0.1.5334.021
41-50 years ago1.4350.4711.0412.825
over 50 years ago4.6190.21002.4277.115
total75.430.75021.2897.42
VSn/a11.2120.94510.21222.38
less than 10 years ago6.5161.53314.51022.58
11-20 years ago4.2201.1418.91314.210
21-30 years ago3.5221.0418.91413.411
31-40 years ago2.4270.9458.91312.211
41-50 years ago1.8310.21007.1159.013
over 50 years ago6.9161.93015.11024.08
total36.467.51573.53117.42
ZGn/a0.0.0.0.0.21000.2100
less than 10 years ago2.6200.0.1.3303.913
11-20 years ago0.3730.0.0.7471.039
21-30 years ago0.0.0.0.0.3680.368
31-40 years ago0.0.0.0.0.0.0.0.
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.21000.0.0.0.0.2100
total3.1170.0.2.6195.76
ZHn/a2.7250.0.0.0.2.725
less than 10 years ago34.740.0.1.23735.94
11-20 years ago7.5140.0.0.21007.714
21-30 years ago2.1280.0.0.0.2.128
31-40 years ago0.5570.0.0.21000.750
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.3700.0.0.0.0.370
total47.920.0.1.63349.41
Switzerlandn/a106.646.51767.75180.93
less than 10 years ago321.328.514144.53474.31
11-20 years ago128.835.71884.94219.43
21-30 years ago44.763.82147.8696.34
31-40 years ago22.193.72236.2762.05
41-50 years ago14.2112.72632.1748.96
over 50 years ago52.169.11481.04142.33
total689.8140.16494.111224.10
© WSL, Swiss National Forest Inventory, 19.06.2020 #852478/318809
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
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
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a2.0320.4710.0.0.21000.4710.0.3.026
less than 10 years ago267.6246.3628.986.01821.893.026373.62
11-20 years ago55.0614.1127.9164.0226.0183.52490.54
21-30 years ago14.6115.8183.2253.3255.2192.23034.38
31-40 years ago3.8234.7212.6282.2304.1222.62819.910
41-50 years ago0.9452.2301.5351.3381.6351.0458.515
over 50 years ago10.3147.9165.6187.51611.5137.81550.86
total354.3181.4449.7524.5850.6520.19580.61
inside perimetern/a0.0.0.21000.0.0.0.0.0.0.0.0.2100
less than 10 years ago1.0451.6353.3241.4380.8501.6359.614
11-20 years ago0.8500.21001.3381.5350.8501.1415.818
21-30 years ago0.6580.6580.8501.5350.6581.2415.319
31-40 years ago0.4711.1450.0.0.21000.0.1.7353.325
41-50 years ago0.0.0.0.0.0.0.4710.21001.2411.833
over 50 years ago1.2410.6581.3411.8330.6582.9268.216
total3.9224.3226.7176.8162.9269.61434.37
outside perimetern/a0.0.0.21000.0.0.5570.0.0.21000.945
less than 10 years ago31.9853.0530.4713.11128.6814.511171.43
11-20 years ago8.71525.3811.61311.91212.31211.11380.95
21-30 years ago4.9207.2176.01812.8128.81510.81350.66
31-40 years ago2.3294.6214.1229.6145.71815.71142.27
41-50 years ago0.8502.6281.4383.3242.32911.31321.69
over 50 years ago5.3197.8165.41916.41010.01329.6774.65
total53.96100.7358.8467.7467.8493.33442.22
totaln/a2.0320.8500.0.0.7500.4710.21004.122
less than 10 years ago300.42100.9362.5420.5951.2519.010554.61
11-20 years ago64.5539.6620.8917.41019.1915.811177.23
21-30 years ago20.11013.61210.01417.71014.61114.21190.25
31-40 years ago6.51710.4146.71711.9129.81420.0965.35
41-50 years ago1.7334.8202.9265.0194.12213.51231.98
over 50 years ago16.81116.41112.31225.7822.1940.36133.74
total412.11186.41115.2299.02121.32123.121057.11
© WSL, Swiss National Forest Inventory, 19.06.2020 #852479/318810
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
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
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a2.0320.4710.0.0.21000.4710.0.3.026
less than 10 years ago272.6248.2630.576.61723.094.222385.12
11-20 years ago56.4614.5128.7154.6216.4173.72394.34
21-30 years ago14.8116.4173.4243.5245.4192.42935.97
31-40 years ago3.8235.1202.6282.2304.1222.62820.310
41-50 years ago1.1412.2301.5351.3381.6351.3389.115
over 50 years ago11.3138.9156.2178.71513.4128.81557.46
total362.0185.7452.9527.1854.3523.09605.01
inside perimetern/a0.0.0.21000.0.0.0.0.0.0.0.0.2100
less than 10 years ago1.0451.6353.3241.6350.8501.6359.814
11-20 years ago0.8500.21001.3381.8330.8501.1416.018
21-30 years ago0.6580.6581.0451.5350.6581.2415.519
31-40 years ago0.4711.1450.0.0.21000.0.1.7353.325
41-50 years ago0.0.0.0.0.0.0.4710.21001.2411.833
over 50 years ago1.2410.6581.7351.8330.8503.0269.115
total3.9224.3227.3167.2163.1259.81435.77
outside perimetern/a0.0.0.21000.0.0.5570.0.0.21000.945
less than 10 years ago32.1854.7531.2713.31129.0815.111175.23
11-20 years ago8.71526.1812.41212.71212.51211.51384.05
21-30 years ago4.9208.0166.21812.8129.01411.01352.06
31-40 years ago2.3295.2194.1229.6145.71816.21043.27
41-50 years ago0.8502.6281.4383.3242.32911.51321.89
over 50 years ago5.9188.2155.81817.01011.01331.2779.25
total54.76104.9361.0469.3369.6496.73456.22
totaln/a2.0320.8500.0.0.7500.4710.21004.122
less than 10 years ago305.61104.5364.9421.4952.8520.89570.11
11-20 years ago65.9540.8622.5919.1919.7916.310184.23
21-30 years ago20.31015.01110.61317.91015.01114.61193.44
31-40 years ago6.51711.3136.71711.9129.81420.5966.75
41-50 years ago1.9324.8202.9265.0194.12214.11132.78
over 50 years ago18.41017.81013.71127.5825.1843.16145.63
total420.61194.91121.32103.62127.02129.521096.91
© WSL, Swiss National Forest Inventory, 19.06.2020 #852480/318811
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI1
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a2.4210.3580.0.0.4500.3580.0.3.417
less than 10 years ago275.3148.7431.657.71122.864.016390.01
11-20 years ago58.0415.387.7114.8147.9113.41797.03
21-30 years ago13.096.7122.4203.2174.4152.42032.16
31-40 years ago5.0144.1162.0222.1224.7153.01821.07
41-50 years ago1.4271.5261.4271.0322.1220.8358.211
over 50 years ago12.899.4107.21210.6913.689.01062.74
total367.9185.9352.3429.8555.8422.66614.21
inside perimetern/a0.0.0.2710.0.0.0.0.0.0.0.0.271
less than 10 years ago1.3282.1222.7191.3280.9331.3289.710
11-20 years ago0.9330.2711.3281.1301.1301.4276.013
21-30 years ago0.4500.5451.2291.1300.6411.8235.713
31-40 years ago0.4500.9330.11000.7380.3581.6254.016
41-50 years ago0.0.0.0.0.0.0.3580.11000.8351.229
over 50 years ago0.7380.4501.5271.9231.1302.9188.511
total3.7164.4156.8126.4124.2159.81035.35
outside perimetern/a0.11000.5450.0.0.8350.11000.11001.625
less than 10 years ago30.3653.9432.5514.0830.3515.28176.22
11-20 years ago8.71124.0611.7912.1911.4911.2979.03
21-30 years ago4.4159.3106.21312.588.31111.6952.34
31-40 years ago2.4205.1144.2158.9105.81317.3743.75
41-50 years ago0.6412.1221.9233.2173.21811.6922.66
over 50 years ago4.9149.9106.31214.8810.7932.1578.73
total51.44104.9262.7366.2369.8399.02454.01
totaln/a2.5201.0320.0.1.1290.4500.11005.114
less than 10 years ago306.81104.7266.7323.0654.0420.57575.81
11-20 years ago67.6439.5520.6717.9720.5716.08182.02
21-30 years ago17.8716.589.81016.8713.3815.8890.03
31-40 years ago7.81110.2106.31211.8910.8921.8668.74
41-50 years ago2.0223.6173.3174.5155.41313.2831.95
over 50 years ago18.4719.7715.0827.3625.4644.04149.92
total422.90195.21121.81102.42129.71131.411103.50
© WSL, Swiss National Forest Inventory, 19.06.2020 #852481/318812
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a2.8275.8186.5177.31712.01314.21148.66
less than 10 years ago272.8248.6630.976.61723.394.222386.22
11-20 years ago56.6614.7118.7154.8206.6173.92395.24
21-30 years ago15.0116.6173.4243.7235.6192.42936.77
31-40 years ago4.0225.1202.6282.2304.7202.62821.110
41-50 years ago1.1412.2301.5351.3381.6351.6359.314
over 50 years ago11.71310.3147.3169.91414.41110.01463.65
total364.0193.4460.8535.8768.1538.87660.81
inside perimetern/a0.0.0.4711.2410.6580.21000.8503.225
less than 10 years ago1.0451.6353.3241.6351.0451.63510.014
11-20 years ago0.8500.21001.3381.8330.8501.1416.018
21-30 years ago0.6580.6581.0451.5350.6581.2415.519
31-40 years ago0.4711.1450.0.0.21000.0.1.7353.325
41-50 years ago0.0.0.0.0.0.0.4710.21001.4382.032
over 50 years ago1.2410.6581.7352.0320.8503.4249.614
total3.9224.5218.5158.0153.62311.21339.77
outside perimetern/a0.21001.4382.0321.5352.82713.71221.69
less than 10 years ago32.1854.7531.4713.31129.0815.111175.43
11-20 years ago8.71526.1812.41213.21212.51211.51384.45
21-30 years ago4.9208.0166.21813.2119.21411.21352.86
31-40 years ago2.3295.2195.11910.0135.71816.81045.16
41-50 years ago0.8502.8271.6353.3242.32911.51322.29
over 50 years ago6.1189.2147.11618.01011.41332.6784.45
total55.16107.4365.7472.5372.94112.33485.91
totaln/a3.0267.7169.7149.41415.01128.6873.45
less than 10 years ago305.81104.9365.5421.4953.3520.89571.71
11-20 years ago66.0541.0622.5919.7919.9916.510185.63
21-30 years ago20.51015.21110.61318.51015.41114.81195.04
31-40 years ago6.71711.3137.61612.41210.41321.1969.55
41-50 years ago1.9325.0203.1255.0194.12214.51133.67
over 50 years ago19.01020.21016.01029.9726.6846.06157.73
total422.91205.31135.02116.22144.62162.321186.51
© WSL, Swiss National Forest Inventory, 19.06.2020 #852482/318813
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: forest
grid: terrestrial grid NFI1
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a2.9194.9146.3137.51111.4913.9846.85
less than 10 years ago275.6149.2431.857.81122.964.016391.21
11-20 years ago58.2415.487.8115.0148.0113.51797.93
21-30 years ago13.197.0122.4203.3174.5152.42032.75
31-40 years ago5.1144.2152.0222.1225.0143.31721.87
41-50 years ago1.4271.5261.4271.0322.1221.0328.411
over 50 years ago13.1911.098.01111.9914.7810.41069.14
total369.4193.1359.7338.6568.5338.55667.81
inside perimetern/a0.11000.4501.4270.4500.11000.7383.218
less than 10 years ago1.3282.1222.7191.3281.0321.3289.810
11-20 years ago0.9330.2711.3281.1301.1301.4276.013
21-30 years ago0.4500.5451.2291.1300.6411.8235.713
31-40 years ago0.4501.0320.11000.7380.3581.6254.116
41-50 years ago0.0.0.0.0.0.0.4500.11000.9331.427
over 50 years ago0.7380.4501.5272.0221.3283.3179.210
total3.8164.7158.2117.1124.61511.0939.35
outside perimetern/a0.3581.4272.1222.1222.91813.3822.17
less than 10 years ago30.5654.1432.6514.3830.4515.38177.22
11-20 years ago8.81124.1611.8912.4911.5911.3979.83
21-30 years ago4.4159.4106.31212.888.51111.7953.14
31-40 years ago2.4205.1144.9149.1106.01317.9745.45
41-50 years ago0.6412.3212.0223.2173.21811.8923.16
over 50 years ago5.01411.097.31215.9711.2933.7584.13
total52.04107.5267.0369.7273.73115.02484.81
totaln/a3.3186.7129.81010.01014.4827.9672.14
less than 10 years ago307.31105.4267.0323.4654.3420.67578.11
11-20 years ago67.9439.7520.8618.4720.7716.27183.62
21-30 years ago18.0717.079.91017.2713.6815.9891.53
31-40 years ago7.91110.4107.01212.0911.3922.7671.34
41-50 years ago2.0223.8163.4174.6145.41313.7832.95
over 50 years ago18.8722.4616.9729.8527.2647.44162.52
total425.10205.31134.81115.41146.81164.411191.90
© WSL, Swiss National Forest Inventory, 19.06.2020 #852483/318814
NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
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
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a0.0.0.0.0.0.0.0.0.4710.21000.658
less than 10 years ago229.7234.5722.195.91817.1102.927312.22
11-20 years ago84.4423.3912.6123.62312.0122.032137.94
21-30 years ago23.498.4155.0203.4244.2221.93346.26
31-40 years ago7.9164.0221.8332.3303.4242.42921.810
41-50 years ago2.8273.0262.4291.5351.9332.23013.812
over 50 years ago6.1188.0165.8187.71611.7138.61548.06
total354.3181.4449.7524.5850.6520.19580.61
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago1.6351.6352.3291.5351.0440.4718.415
11-20 years ago0.6581.0451.8330.8500.4711.3385.918
21-30 years ago0.4710.0.0.8501.1410.6571.0453.922
31-40 years ago0.6580.21000.8501.0450.21001.2413.922
41-50 years ago0.21001.1450.0.0.21000.0.1.7353.126
over 50 years ago0.6580.4711.1452.2300.7504.1229.015
total3.9224.3226.7176.8162.9269.61434.37
outside perimetern/a0.0.0.0.0.0.0.4710.0.0.0.0.471
less than 10 years ago25.8843.8623.0913.61123.2910.713140.14
11-20 years ago13.71226.0816.1109.61316.21010.21391.84
21-30 years ago5.02014.8116.8169.4147.6169.51453.16
31-40 years ago2.9265.1204.62110.0136.6179.81439.17
41-50 years ago2.1302.9273.1258.0154.22214.41134.77
over 50 years ago4.3218.2155.21916.71010.01338.7683.14
total53.96100.7358.8467.7467.8493.33442.22
totaln/a0.0.0.0.0.0.0.4710.4710.21001.045
less than 10 years ago257.2279.9447.4521.0941.3614.011460.72
11-20 years ago98.7450.3630.5714.01128.6813.512235.63
21-30 years ago28.7823.3912.61214.01112.41212.312103.24
31-40 years ago11.4139.3147.21613.41110.11413.41264.85
41-50 years ago5.1207.0175.5199.7146.11818.31051.66
over 50 years ago11.01316.71112.01226.6822.5951.35140.13
total412.11186.41115.2299.02121.32123.121057.11
© WSL, Swiss National Forest Inventory, 19.06.2020 #852484/318815
NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
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
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a2.2301.4381.2410.8501.2410.21007.017
less than 10 years ago235.7236.2723.886.51718.5103.325323.92
11-20 years ago86.4424.0913.6124.82013.4123.523145.73
21-30 years ago23.999.1155.4194.0225.6192.33050.36
31-40 years ago8.3155.0201.8332.7274.0222.82724.69
41-50 years ago2.8273.4242.4292.0312.3302.82715.611
over 50 years ago7.21710.7137.0167.91614.61110.71358.06
total366.4189.7455.2528.8759.5525.68625.11
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago1.6351.6352.3291.7331.0440.4718.615
11-20 years ago0.6581.0451.8331.2410.4711.3386.418
21-30 years ago0.4710.0.1.2411.1410.6571.0454.321
31-40 years ago0.6580.21001.0451.0450.21001.2414.122
41-50 years ago0.21001.1450.0.0.21000.0.1.7353.126
over 50 years ago0.6580.4711.5382.2300.9454.72110.214
total3.9224.3227.7167.4163.12510.21436.77
outside perimetern/a0.21000.0.0.21000.6581.2411.0453.225
less than 10 years ago26.2845.6624.6814.01124.2812.312146.93
11-20 years ago13.71226.6816.51010.01318.01010.61395.44
21-30 years ago5.02015.0117.51610.1137.8159.71455.06
31-40 years ago2.9265.9184.82010.0137.01710.01440.77
41-50 years ago2.1303.3253.3248.0154.22215.21136.17
over 50 years ago4.7208.8156.11817.11011.61242.0690.34
total54.96105.2363.0469.7374.04100.83467.52
totaln/a2.4291.4381.4381.4382.4291.24110.214
less than 10 years ago263.5283.4450.6522.2943.7616.011479.42
11-20 years ago100.7451.6631.9716.01031.8715.511247.43
21-30 years ago29.3824.1914.01115.21114.01112.912109.54
31-40 years ago11.81311.1137.61613.81111.11314.01169.45
41-50 years ago5.1207.7165.71810.2136.51719.6954.86
over 50 years ago12.51219.91014.61127.2827.1857.35158.63
total425.21199.21125.92105.92136.62136.621129.41
© WSL, Swiss National Forest Inventory, 19.06.2020 #852485/318816
NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI2
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a19.597.7156.0173.7225.4183.22345.56
less than 10 years ago231.9236.3723.986.51618.293.124319.82
11-20 years ago76.3421.3912.0124.22012.0123.123129.03
21-30 years ago21.298.1154.7193.5225.0192.03044.56
31-40 years ago7.3154.4201.6332.4273.6222.52721.89
41-50 years ago2.4273.1242.1291.8312.0302.52713.911
over 50 years ago6.4179.6136.1176.91613.0119.51351.56
total365.0190.5456.5529.0759.1526.08626.01
inside perimetern/a0.5580.6580.21000.4710.4710.7502.726
less than 10 years ago1.4351.8322.2281.5331.0410.4718.314
11-20 years ago0.5580.9451.6331.1410.4711.2385.618
21-30 years ago0.3710.0.1.0411.0410.5570.8453.821
31-40 years ago0.5580.21000.9450.9450.21001.1413.722
41-50 years ago0.21000.9450.0.0.21000.0.1.5352.726
over 50 years ago0.5580.4711.3381.9300.8454.1219.114
total4.0214.8197.1157.0153.3239.81335.97
outside perimetern/a3.1237.7155.7177.4155.8179.61339.47
less than 10 years ago25.0843.6625.1814.31024.9812.711145.63
11-20 years ago12.01223.8814.5108.91316.0109.61384.84
21-30 years ago4.42013.3116.6168.9146.9168.51448.56
31-40 years ago2.6265.2184.2208.9136.2178.91436.17
41-50 years ago1.9302.9252.9247.1153.72213.41132.07
over 50 years ago4.2207.9155.41815.11010.21337.4680.14
total53.15104.4364.3470.5373.84100.23466.41
totaln/a23.1816.11011.81211.51211.61213.61187.64
less than 10 years ago258.3281.7451.2522.3844.2516.110473.81
11-20 years ago88.8446.0628.1714.21028.3714.011219.43
21-30 years ago25.9821.4912.31113.41112.41211.41296.84
31-40 years ago10.4139.9136.71612.2119.91312.41161.55
41-50 years ago4.5206.9165.0189.0135.81717.4948.66
over 50 years ago11.11217.81012.81124.0824.0851.15140.73
total422.11199.71128.02106.42136.12136.021128.41
© WSL, Swiss National Forest Inventory, 19.06.2020 #852486/318817
NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a4.02210.51411.3138.31516.71116.61167.35
less than 10 years ago235.7236.4723.886.51718.5103.325324.12
11-20 years ago86.4424.0913.6124.82013.4123.523145.73
21-30 years ago23.999.1155.4194.0225.6192.33050.36
31-40 years ago8.3155.0201.8332.7274.0222.82724.69
41-50 years ago2.8273.4242.4292.0312.3302.82715.611
over 50 years ago7.21710.7137.2167.91614.61110.71358.26
total368.2199.0465.4536.2775.0441.96685.81
inside perimetern/a0.0.0.21001.4380.6580.21001.2413.624
less than 10 years ago1.6351.6352.3291.7331.0440.4718.615
11-20 years ago0.6581.0451.8331.2410.4711.3386.418
21-30 years ago0.4710.0.1.2411.1410.6571.0454.321
31-40 years ago0.6580.21001.0451.0450.21001.2414.122
41-50 years ago0.21001.1450.0.0.21000.0.1.7353.126
over 50 years ago0.6580.4711.5382.2301.2414.72110.414
total3.9224.5219.1148.0153.62311.41340.57
outside perimetern/a0.6582.5294.7213.7234.62117.41033.48
less than 10 years ago26.2845.8624.6814.21124.2812.312147.33
11-20 years ago13.71226.6816.51010.01318.01010.61395.44
21-30 years ago5.02015.0117.51610.1137.8159.71455.06
31-40 years ago2.9265.9184.82010.0137.01710.01440.77
41-50 years ago2.1303.3253.3248.0154.22215.31136.37
over 50 years ago4.9209.0156.11817.11011.61242.2691.04
total55.56108.1367.5473.0377.34117.62499.01
totaln/a4.62113.21217.41012.61221.5935.27104.44
less than 10 years ago263.5283.8450.6522.4943.7616.011480.02
11-20 years ago100.7451.6631.9716.01031.8715.511247.43
21-30 years ago29.3824.1914.01115.21114.01112.912109.54
31-40 years ago11.81311.1137.61613.81111.11314.01169.45
41-50 years ago5.1207.7165.71810.2136.51719.8955.06
over 50 years ago12.71220.11014.81127.2827.3857.55159.63
total427.61211.61142.02117.32155.92170.911225.30
© WSL, Swiss National Forest Inventory, 19.06.2020 #852487/318818
NFI2
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: forest
grid: terrestrial grid NFI2
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a21.5917.31016.21011.21221.5919.09106.64
less than 10 years ago231.9236.5723.986.51618.293.124320.02
11-20 years ago76.3421.3912.0124.22012.0123.123129.03
21-30 years ago21.298.1154.7193.5225.0192.03044.56
31-40 years ago7.3154.4201.6332.4273.6222.52721.89
41-50 years ago2.4273.1242.1291.8312.0302.52713.911
over 50 years ago6.4179.6136.3166.91613.0119.51351.76
total367.01100.3366.9436.4675.2441.76687.51
inside perimetern/a0.5580.9451.4350.9450.6582.1296.417
less than 10 years ago1.4351.8322.2281.5331.0410.4718.314
11-20 years ago0.5580.9451.6331.1410.4711.2385.618
21-30 years ago0.3710.0.1.0411.0410.5570.8453.821
31-40 years ago0.5580.21000.9450.9450.21001.1413.722
41-50 years ago0.21000.9450.0.0.21000.0.1.5352.726
over 50 years ago0.5580.4711.3381.9301.0414.1219.314
total4.0215.1198.4147.5153.72211.21239.87
outside perimetern/a3.42210.1139.81310.2129.41325.3868.25
less than 10 years ago25.0843.7625.1814.51024.9812.711146.03
11-20 years ago12.01223.8814.5108.91316.0109.61384.84
21-30 years ago4.42013.3116.6168.9146.9168.51448.56
31-40 years ago2.6265.2184.2208.9136.2178.91436.17
41-50 years ago1.9302.9252.9247.1153.72213.61132.17
over 50 years ago4.3208.1155.41815.11010.21337.6680.74
total53.65107.2368.5473.5377.33116.22496.31
totaln/a25.4828.4827.4822.3831.4746.36181.23
less than 10 years ago258.3282.0451.2522.5844.2516.110474.31
11-20 years ago88.8446.0628.1714.21028.3714.011219.43
21-30 years ago25.9821.4912.31113.41112.41211.41296.84
31-40 years ago10.4139.9136.71612.2119.91312.41161.55
41-50 years ago4.5206.9165.0189.0135.81717.6948.86
over 50 years ago11.21218.01013.01124.0824.2851.25141.63
total424.61212.61143.72117.42156.22169.211223.60
© WSL, Swiss National Forest Inventory, 19.06.2020 #852488/318819
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1983/85
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a1.6350.0.0.0.1.635
less than 10 years ago75.740.85015.21191.63
11-20 years ago23.590.6584.42128.58
21-30 years ago5.8180.6582.9269.314
31-40 years ago1.4380.4711.7333.523
41-50 years ago0.6580.0.0.8501.338
over 50 years ago4.7201.1413.0258.914
total113.323.42328.07144.81
Eastern Juran/a0.21000.0.0.0.0.2100
less than 10 years ago30.650.31002.92633.84
11-20 years ago5.1190.0.1.5376.517
21-30 years ago2.8270.0.0.6583.425
31-40 years ago0.9500.0.0.21001.144
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.7570.0.0.0.0.757
total40.330.31005.11945.72
Western Plateaun/a0.21000.0.0.0.0.2100
less than 10 years ago26.360.0.1.53827.76
11-20 years ago8.8140.0.1.24010.013
21-30 years ago3.2250.0.0.9504.122
31-40 years ago1.1440.0.0.0.1.144
41-50 years ago0.4710.0.0.0.0.471
over 50 years ago2.0310.0.1.4383.524
total42.030.0.5.01947.02
Central Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago52.830.0.7.31560.12
11-20 years ago4.3210.21001.0455.518
21-30 years ago1.3380.0.0.21001.535
31-40 years ago0.4700.0.0.21000.658
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8500.0.0.5581.338
total59.530.21009.21369.01
Eastern Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago81.930.0.4.62086.52
11-20 years ago13.7110.0.0.65814.311
21-30 years ago1.8330.0.0.4712.130
31-40 years ago0.21000.0.0.21000.471
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago2.1300.0.0.21002.329
total99.620.0.6.018105.61
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.2160.210010.61217.98
11-20 years ago3.5250.0.8.01411.512
21-30 years ago1.6360.0.1.6383.126
31-40 years ago1.6380.0.1.5383.127
41-50 years ago0.6580.0.0.5571.141
over 50 years ago1.3420.0.2.3303.624
total15.6100.210024.5740.33
Central Pre-Alpsn/a0.21000.0.0.0.0.2100
less than 10 years ago32.170.0.29.6761.74
11-20 years ago6.8170.210010.11417.110
21-30 years ago2.3300.0.2.3304.621
31-40 years ago1.7330.21001.2413.225
41-50 years ago1.1410.0.0.7491.831
over 50 years ago3.7230.4712.5276.617
total47.950.85046.4595.12
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago21.890.47119.9942.25
11-20 years ago5.1200.21006.91612.112
21-30 years ago1.8330.0.3.4245.219
31-40 years ago1.8330.0.1.9313.822
41-50 years ago0.5580.0.0.4710.944
over 50 years ago1.9330.0.1.7353.624
total32.960.65834.2667.73
Northwestern Alpsn/a0.21000.21000.21000.658
less than 10 years ago6.5171.43813.41121.38
11-20 years ago4.1220.0.6.91610.913
21-30 years ago2.0310.6583.6246.217
31-40 years ago1.4380.9492.1314.421
41-50 years ago0.4710.0.1.1401.535
over 50 years ago2.9260.21003.1256.218
total17.6103.22530.2651.13
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.3231.0443.8218.113
11-20 years ago1.9310.8501.3364.020
21-30 years ago0.8500.21000.6561.535
31-40 years ago0.4710.0.0.4700.850
41-50 years ago0.7480.0.0.21000.942
over 50 years ago2.3280.8492.4285.617
total9.5122.7268.71220.95
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.2212.0316.71612.910
11-20 years ago0.9440.3703.3244.520
21-30 years ago0.6590.6591.9313.124
31-40 years ago0.3700.0.1.8332.130
41-50 years ago0.21000.0.0.9501.145
over 50 years ago1.4370.4711.3373.024
total7.6153.32415.8926.65
Southwestern Alpsn/a0.21000.0.0.5570.750
less than 10 years ago6.0181.43813.11120.59
11-20 years ago4.0221.53511.91217.410
21-30 years ago3.3251.53512.81217.710
31-40 years ago2.2300.21009.61411.912
41-50 years ago1.3380.4713.3245.019
over 50 years ago7.5161.83316.41025.78
total24.586.81667.7499.02
Southeastern Alpsn/a0.4710.0.0.0.0.471
less than 10 years ago21.890.85028.6851.25
11-20 years ago6.0180.85012.31219.19
21-30 years ago5.2190.6588.81514.611
31-40 years ago4.1220.0.5.7189.814
41-50 years ago1.6350.21002.3294.122
over 50 years ago11.5130.65810.01322.19
total50.652.92667.84121.32
Southern Alpsn/a0.0.0.0.0.21000.2100
less than 10 years ago3.0261.63514.51119.010
11-20 years ago3.5241.14111.11315.811
21-30 years ago2.2301.24110.81314.211
31-40 years ago2.6281.73515.71120.09
41-50 years ago1.0451.24111.31313.512
over 50 years ago7.8152.92629.6740.36
total20.199.61493.33123.12
Switzerlandn/a3.0260.21000.9444.122
less than 10 years ago373.229.714171.73554.51
11-20 years ago91.045.71880.55177.23
21-30 years ago34.885.31950.8690.85
31-40 years ago20.1103.42542.3765.75
41-50 years ago8.5151.83321.4931.78
over 50 years ago50.868.11674.55133.34
total581.2134.17442.021057.41
© WSL, Swiss National Forest Inventory, 19.06.2020 #852489/318820
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1983/85
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a1.6350.0.0.0.1.635
less than 10 years ago77.540.85015.41193.63
11-20 years ago24.280.6584.42129.18
21-30 years ago6.1180.6582.9269.514
31-40 years ago1.4380.4711.7333.523
41-50 years ago0.7500.0.0.8501.535
over 50 years ago4.9201.1413.2249.314
total116.323.42328.47148.21
Eastern Juran/a0.21000.0.0.0.0.2100
less than 10 years ago30.950.31002.92634.04
11-20 years ago5.1190.0.1.5376.517
21-30 years ago2.8270.0.0.6583.425
31-40 years ago0.9500.0.0.21001.144
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.7570.0.0.0.0.757
total40.630.31005.11946.02
Western Plateaun/a0.21000.0.0.0.0.2100
less than 10 years ago27.360.0.1.53828.86
11-20 years ago9.0140.0.1.24010.213
21-30 years ago3.2250.0.0.9504.122
31-40 years ago1.1440.0.0.0.1.144
41-50 years ago0.4710.0.0.0.0.471
over 50 years ago2.2300.0.1.6353.822
total43.530.0.5.21948.72
Central Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago53.330.0.7.31560.72
11-20 years ago4.5200.21001.0455.718
21-30 years ago1.3380.0.0.21001.535
31-40 years ago0.4700.0.0.21000.658
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0450.0.0.7501.733
total60.520.21009.41370.11
Eastern Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago83.230.0.4.62087.82
11-20 years ago14.1110.0.0.65814.711
21-30 years ago1.8330.0.0.4712.130
31-40 years ago0.21000.0.0.21000.471
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago2.5280.0.0.21002.627
total101.720.0.6.018107.71
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.2160.210010.61217.98
11-20 years ago3.5250.0.8.41411.811
21-30 years ago1.6360.0.1.9353.425
31-40 years ago1.6380.0.1.7363.326
41-50 years ago0.6580.0.0.5571.141
over 50 years ago1.5390.0.2.3303.823
total15.8100.210025.4741.33
Central Pre-Alpsn/a0.21000.0.0.0.0.2100
less than 10 years ago33.570.0.30.8764.34
11-20 years ago7.0170.210010.11417.210
21-30 years ago2.3300.0.2.7285.020
31-40 years ago1.7330.21001.4383.424
41-50 years ago1.1410.0.0.7491.831
over 50 years ago3.9220.4712.7267.016
total49.750.85048.4598.92
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago22.680.47120.3843.45
11-20 years ago5.7180.21007.31613.212
21-30 years ago1.8330.0.3.4245.219
31-40 years ago1.8330.0.1.9313.822
41-50 years ago0.5580.0.0.4710.944
over 50 years ago1.9330.0.1.8333.823
total34.460.65835.2670.12
Northwestern Alpsn/a0.21000.21000.21000.658
less than 10 years ago6.9171.43813.81122.18
11-20 years ago4.3210.0.7.31611.512
21-30 years ago2.6270.6583.7237.016
31-40 years ago1.8330.9492.3305.020
41-50 years ago0.4710.0.1.1401.535
over 50 years ago3.5240.21003.3257.017
total19.893.22531.6654.73
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.9221.0444.0208.913
11-20 years ago2.1300.8501.3364.220
21-30 years ago0.8500.4700.8491.931
31-40 years ago0.4710.0.0.4700.850
41-50 years ago0.7480.0.0.21000.942
over 50 years ago2.5271.0442.6276.116
total10.5113.1249.31222.95
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.4212.0316.91613.310
11-20 years ago0.9440.3703.7224.919
21-30 years ago0.8510.6591.9313.324
31-40 years ago0.3700.0.1.8332.130
41-50 years ago0.21000.0.0.9501.145
over 50 years ago1.7330.6581.3373.521
total8.3143.52316.4928.25
Southwestern Alpsn/a0.21000.0.0.5570.750
less than 10 years ago6.6171.63513.31121.49
11-20 years ago4.6211.83312.71219.19
21-30 years ago3.5241.53512.81217.910
31-40 years ago2.2300.21009.61411.912
41-50 years ago1.3380.4713.3245.019
over 50 years ago8.7151.83317.01027.58
total27.187.21669.33103.62
Southeastern Alpsn/a0.4710.0.0.0.0.471
less than 10 years ago23.090.85029.0852.85
11-20 years ago6.4170.85012.51219.79
21-30 years ago5.4190.6589.01415.011
31-40 years ago4.1220.0.5.7189.814
41-50 years ago1.6350.21002.3294.122
over 50 years ago13.4120.85011.01325.18
total54.353.12569.64127.02
Southern Alpsn/a0.0.0.0.0.21000.2100
less than 10 years ago4.2221.63515.11120.89
11-20 years ago3.7231.14111.51316.310
21-30 years ago2.4291.24111.01314.611
31-40 years ago2.6281.73516.21020.59
41-50 years ago1.3381.24111.51314.111
over 50 years ago8.8153.02631.2743.16
total23.099.81496.73129.52
Switzerlandn/a3.0260.21000.9444.122
less than 10 years ago384.629.914175.53570.01
11-20 years ago94.845.91883.55184.33
21-30 years ago36.375.51952.2694.04
31-40 years ago20.4103.42543.3767.15
41-50 years ago9.1151.83321.6932.58
over 50 years ago57.368.81578.95145.13
total605.6135.57455.921097.01
© WSL, Swiss National Forest Inventory, 19.06.2020 #852490/318821
NFI1
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI1
state1983/85
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a1.7250.0.0.0.1.725
less than 10 years ago80.330.93314.3895.62
11-20 years ago23.960.7384.61529.25
21-30 years ago5.6130.4502.6198.611
31-40 years ago2.2210.3581.6254.215
41-50 years ago0.8350.0.0.5451.328
over 50 years ago6.8120.7382.91810.410
total121.423.01826.66151.01
Eastern Juran/a0.2710.0.0.0.0.271
less than 10 years ago31.140.3582.61934.03
11-20 years ago6.2120.11000.9337.211
21-30 years ago2.0230.0.0.4502.320
31-40 years ago1.0310.0.0.2711.228
41-50 years ago0.0.0.0.0.11000.1100
over 50 years ago0.7400.0.0.2710.934
total41.120.4504.51446.01
Western Plateaun/a0.3580.0.0.0.0.358
less than 10 years ago27.240.11002.12229.44
11-20 years ago9.1100.0.1.13010.29
21-30 years ago3.0180.0.0.5443.617
31-40 years ago0.9330.0.0.0.0.933
41-50 years ago0.6410.0.0.0.0.641
over 50 years ago2.8190.0.1.2294.016
total44.020.11005.01449.02
Central Plateaun/a0.2710.0.0.0.0.271
less than 10 years ago52.420.0.7.31159.72
11-20 years ago4.8140.11001.4276.312
21-30 years ago0.9330.0.0.3581.229
31-40 years ago0.5450.11000.4501.031
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0320.0.0.5451.526
total59.820.2719.8969.91
Eastern Plateaun/a0.0.0.0.0.11000.1100
less than 10 years ago83.620.0.3.91687.52
11-20 years ago14.280.0.0.73814.98
21-30 years ago1.8230.0.0.6412.420
31-40 years ago0.4500.0.0.2710.641
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.7240.0.0.11001.823
total101.610.0.5.513107.21
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago6.5120.35810.8817.66
11-20 years ago3.4170.0.8.01011.58
21-30 years ago2.3200.0.2.8195.113
31-40 years ago1.1300.11002.1223.317
41-50 years ago0.3580.0.0.4500.738
over 50 years ago1.6260.0.2.5204.115
total15.270.45026.6442.22
Central Pre-Alpsn/a0.2710.11000.4500.738
less than 10 years ago34.750.64129.9565.23
11-20 years ago7.7110.11008.71016.57
21-30 years ago2.1220.2712.8195.114
31-40 years ago1.7240.11001.2293.018
41-50 years ago0.7380.0.0.8351.426
over 50 years ago4.6140.2713.2178.011
total51.731.32847.04100.01
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago23.160.45020.9644.43
11-20 years ago5.1140.2716.81212.18
21-30 years ago1.2290.11003.7165.014
31-40 years ago1.2290.0.2.0223.117
41-50 years ago0.6410.0.0.6411.229
over 50 years ago2.0220.0.2.0224.015
total33.140.73836.0469.82
Northwestern Alpsn/a0.11000.11000.11000.358
less than 10 years ago7.4111.22913.4822.06
11-20 years ago4.2150.11007.11111.49
21-30 years ago2.3210.3583.9166.512
31-40 years ago1.3280.7371.9234.015
41-50 years ago0.5450.0.0.9331.426
over 50 years ago3.2170.2714.2157.611
total19.062.71931.5453.22
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.5170.9334.8149.39
11-20 years ago1.9220.7371.5264.115
21-30 years ago0.6410.8380.9352.221
31-40 years ago0.4490.11000.5441.131
41-50 years ago0.5440.0.0.5441.031
over 50 years ago2.8191.0332.2216.012
total9.793.51610.4823.74
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago5.0131.4266.71113.17
11-20 years ago0.7380.4493.2174.214
21-30 years ago0.6410.4501.6252.619
31-40 years ago0.4500.0.1.7242.121
41-50 years ago0.3580.0.0.8351.130
over 50 years ago2.4200.5452.1215.013
total9.492.61916.1628.23
Southwestern Alpsn/a0.4500.0.0.8351.129
less than 10 years ago7.7111.32814.0823.06
11-20 years ago4.8141.13012.1917.97
21-30 years ago3.2171.13012.5816.87
31-40 years ago2.1220.7388.91011.89
41-50 years ago1.0320.3583.2174.515
over 50 years ago10.691.92314.8827.36
total29.856.41266.23102.42
Southeastern Alpsn/a0.3580.0.0.11000.450
less than 10 years ago22.860.93330.3554.04
11-20 years ago7.9111.13011.4920.57
21-30 years ago4.4150.6418.31113.38
31-40 years ago4.7150.3585.81310.89
41-50 years ago2.1220.11003.2185.413
over 50 years ago13.681.13010.7925.46
total55.844.21569.83129.71
Southern Alpsn/a0.0.0.0.0.11000.1100
less than 10 years ago4.0161.32815.2820.57
11-20 years ago3.4171.42711.2916.08
21-30 years ago2.4201.82311.6915.88
31-40 years ago3.0181.62517.3721.86
41-50 years ago0.8350.83511.6913.28
over 50 years ago9.0102.91832.1544.04
total22.669.81099.02131.41
Switzerlandn/a3.4170.2711.6255.114
less than 10 years ago389.419.710176.32575.41
11-20 years ago97.236.01378.73181.92
21-30 years ago32.365.71352.4490.43
31-40 years ago21.174.01643.8568.94
41-50 years ago8.2111.22922.5631.85
over 50 years ago62.848.61178.73150.02
total614.2135.45454.011103.60
© WSL, Swiss National Forest Inventory, 19.06.2020 #852491/318822
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