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NFI1
forest area
avalanches 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
avalanches 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 ago36.640.0.0.0.36.64
11-20 years ago6.8160.0.0.0.6.816
21-30 years ago1.6350.0.0.0.1.635
31-40 years ago0.6580.0.0.0.0.658
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0440.0.0.0.1.044
total46.720.0.0.0.46.72
AIn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.4340.21001.7303.316
11-20 years ago0.6580.4720.3671.235
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
total2.3250.6572.2245.19
ARn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.5210.0.1.6325.115
11-20 years ago1.3360.21001.0392.525
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
total5.3130.21002.7228.16
BEn/a0.0.0.21000.21000.471
less than 10 years ago62.356.41739.16107.93
11-20 years ago10.4143.12512.51226.08
21-30 years ago3.8231.2414.9209.914
31-40 years ago1.6350.8501.8334.222
41-50 years ago0.6580.0.1.9332.529
over 50 years ago4.8201.0454.52110.313
total83.5412.71264.94161.11
BL/BSn/a0.0.0.0.0.0.0.0.
less than 10 years ago12.290.0.2.42914.67
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
total15.760.0.3.92219.64
FRn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.3100.9445.41820.67
11-20 years ago5.7180.0.4.91810.612
21-30 years ago2.5290.0.0.4722.926
31-40 years ago1.2410.21000.7582.132
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago2.1320.0.1.2413.325
total25.951.04012.81039.73
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 ago3.1230.8503.1237.014
11-20 years ago0.6581.1390.6572.328
21-30 years ago0.4710.6570.8501.832
31-40 years ago0.0.0.4710.21000.657
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.6580.9440.4711.930
total4.9183.8205.11713.87
GRn/a0.4710.0.0.0.0.471
less than 10 years ago22.497.91626.6856.95
11-20 years ago6.5173.72311.91222.29
21-30 years ago5.3192.23010.01417.610
31-40 years ago4.8201.4387.11613.312
41-50 years ago2.0321.7333.1256.817
over 50 years ago12.7123.82210.81327.48
total54.2520.7969.64144.52
JUn/a0.0.0.0.0.0.0.0.
less than 10 years ago13.5100.5524.51918.57
11-20 years ago4.5200.21002.7267.415
21-30 years ago1.9310.21000.8502.925
31-40 years ago0.21000.0.0.6580.850
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.2410.0.2.0313.124
total21.360.94310.51132.83
LUn/a0.0.0.0.0.0.0.0.
less than 10 years ago24.860.4714.02229.25
11-20 years ago4.6200.21002.1316.816
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
total31.940.6586.81639.43
NEn/a0.21000.0.0.0.0.2100
less than 10 years ago17.371.0442.12820.46
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 ago0.4700.0.0.4720.851
total23.451.0442.82427.33
NWn/a0.31000.0.0.0.0.3100
less than 10 years ago1.8330.4721.5373.820
11-20 years ago0.0.0.4720.7561.144
21-30 years ago0.0.0.0.0.0.0.0.
31-40 years ago0.4720.0.0.4670.848
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0490.31000.0.1.243
total3.5211.2442.6267.29
OWn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.1200.5602.9247.513
11-20 years ago1.4370.11001.0452.626
21-30 years ago0.6580.21000.9491.734
31-40 years ago1.0440.5710.21001.734
41-50 years ago0.7580.0.0.9481.536
over 50 years ago1.3370.3721.5343.122
total9.1121.7337.41318.14
SGn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.2111.73513.31129.26
11-20 years ago2.4291.3414.1217.915
21-30 years ago0.8500.4712.7273.923
31-40 years ago1.4380.7581.1413.225
41-50 years ago0.0.0.0.1.3401.340
over 50 years ago1.3410.21001.7353.225
total20.194.42124.3748.84
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 ago23.950.0.1.73325.64
11-20 years ago2.7250.0.0.21002.924
21-30 years ago1.1410.0.0.5701.636
31-40 years ago0.21000.0.0.5700.758
41-50 years ago0.21000.0.0.0.0.2100
over 50 years ago0.3710.21000.0.0.557
total28.530.21002.92631.62
SZn/a0.0.0.0.0.0.0.0.
less than 10 years ago6.7160.3706.11613.29
11-20 years ago2.0310.6571.3373.921
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 ago1.8330.4710.6582.826
total13.5101.43710.71125.54
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/a0.0.0.21000.0.0.2100
less than 10 years ago2.5290.65810.31413.312
11-20 years ago2.8261.4388.41512.712
21-30 years ago2.0311.2418.11511.213
31-40 years ago1.9330.47014.21116.410
41-50 years ago0.6570.4719.91410.813
over 50 years ago6.6173.92224.7835.27
total16.3108.01575.6399.92
URn/a0.0.0.0.0.0.0.0.
less than 10 years ago1.1400.7482.6264.418
11-20 years ago1.2400.8490.4692.426
21-30 years ago0.4710.6560.0.1.043
31-40 years ago0.4720.21000.21000.850
41-50 years ago0.4670.21000.0.0.652
over 50 years ago1.4361.0451.5363.820
total4.8183.5214.61812.96
VDn/a1.8330.0.0.0.1.833
less than 10 years ago38.061.8335.11944.95
11-20 years ago17.1101.0453.52321.69
21-30 years ago4.1210.8502.6277.516
31-40 years ago1.6350.8501.6353.922
41-50 years ago1.2410.0.0.6581.833
over 50 years ago3.7230.6581.9316.217
total67.535.01915.21087.72
VSn/a0.21000.0.0.5570.750
less than 10 years ago6.0184.6209.81320.59
11-20 years ago4.0224.3219.11417.410
21-30 years ago3.3255.2199.21417.710
31-40 years ago2.2302.0317.81511.912
41-50 years ago1.3381.0452.7265.019
over 50 years ago7.5165.81812.41225.78
total24.5822.9851.6599.02
ZGn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.4230.21001.6304.213
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
total2.9190.21002.3225.48
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/a3.1260.4710.7504.222
less than 10 years ago375.5228.98149.13553.51
11-20 years ago90.8418.91067.25176.93
21-30 years ago34.8812.51243.5790.95
31-40 years ago21.0107.21737.8766.05
41-50 years ago8.8153.22420.51032.68
over 50 years ago51.2618.61064.05133.74
total585.2189.84382.821057.81
© WSL, Swiss National Forest Inventory, 19.06.2020 #853438/319769
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