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NFI2
forest area
avalanches 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
state1993/95
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.0.0.0.0.0.0.0.
less than 10 years ago62.942.42911.21376.54
11-20 years ago30.571.0446.51738.06
21-30 years ago13.1120.4712.72716.210
31-40 years ago2.9260.4711.9315.219
41-50 years ago0.6580.0.1.7332.329
over 50 years ago3.3240.4712.8266.617
total113.324.62026.88144.81
Eastern Juran/a0.0.0.0.0.0.0.0.
less than 10 years ago25.060.0.1.34126.36
11-20 years ago11.7110.0.1.63513.410
21-30 years ago1.7350.0.0.6582.330
31-40 years ago2.0330.0.0.6582.629
41-50 years ago0.8490.0.0.0.0.849
over 50 years ago0.31000.0.0.0.0.3100
total41.630.0.4.12245.72
Western Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago24.270.0.2.92627.16
11-20 years ago10.4130.0.0.57010.812
21-30 years ago3.0260.0.0.4703.324
31-40 years ago2.2310.0.0.21002.429
41-50 years ago1.1440.0.0.0.1.144
over 50 years ago1.3410.0.1.0452.330
total42.030.0.5.01947.02
Central Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago43.640.0.5.21948.84
11-20 years ago13.0110.0.2.92515.910
21-30 years ago1.8330.0.0.6582.429
31-40 years ago0.4710.0.0.21000.658
41-50 years ago0.4700.0.0.21000.658
over 50 years ago0.4710.0.0.4710.750
total59.530.0.9.41369.01
Eastern Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago74.230.0.3.92278.13
11-20 years ago19.590.0.1.04520.59
21-30 years ago4.2210.0.0.4714.620
31-40 years ago0.8500.0.0.21001.045
41-50 years ago0.4710.0.0.0.0.471
over 50 years ago1.1410.0.0.0.1.141
total100.220.0.5.519105.61
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago5.7181.6367.31614.510
11-20 years ago4.3211.5365.21911.112
21-30 years ago1.9340.6584.1206.516
31-40 years ago1.1410.21000.9512.230
41-50 years ago1.2450.0.0.7591.935
over 50 years ago1.4380.4702.2304.122
total15.6104.32120.4840.33
Central Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago21.892.42922.5946.65
11-20 years ago15.7111.63510.31327.67
21-30 years ago4.0220.4714.8209.314
31-40 years ago1.7350.4711.3413.325
41-50 years ago1.0450.4710.7582.032
over 50 years ago3.8220.4712.1306.317
total47.955.61841.6595.12
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.4101.04512.31229.77
11-20 years ago8.8150.65711.11220.59
21-30 years ago3.0260.9442.9256.816
31-40 years ago0.8500.0.2.4293.325
41-50 years ago1.6350.0.1.5353.225
over 50 years ago2.2300.21001.8334.321
total32.962.72632.1667.73
Northwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago6.7174.3217.41618.49
11-20 years ago3.2252.4286.31711.912
21-30 years ago2.6271.6353.0257.316
31-40 years ago1.2400.4702.3303.922
41-50 years ago1.0450.8501.5373.424
over 50 years ago2.8270.4712.9256.118
total17.61010.01323.5851.13
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.7221.9313.1248.712
11-20 years ago1.5350.4711.1403.024
21-30 years ago1.4371.0440.6572.924
31-40 years ago0.4710.6570.21001.240
41-50 years ago0.4710.21000.0.0.658
over 50 years ago2.1290.8491.6344.519
total9.5124.8186.71520.95
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.4291.8315.0199.113
11-20 years ago2.3281.7353.2247.215
21-30 years ago0.5580.8511.3382.726
31-40 years ago0.6590.7581.4352.726
41-50 years ago0.3700.9500.5581.733
over 50 years ago1.4370.6581.2413.224
total7.6156.41612.71026.65
Southwestern Alpsn/a0.0.0.0.0.4710.471
less than 10 years ago5.9185.01910.01321.09
11-20 years ago3.6233.5236.91614.011
21-30 years ago3.4242.9257.61614.011
31-40 years ago2.3304.0217.01613.411
41-50 years ago1.5351.6356.6179.714
over 50 years ago7.7165.81813.01226.68
total24.5822.9851.6599.02
Southeastern Alpsn/a0.4710.0.0.0.0.471
less than 10 years ago17.1104.62119.6941.36
11-20 years ago12.0124.12212.51228.68
21-30 years ago4.2222.5285.61812.412
31-40 years ago3.4241.8334.92010.114
41-50 years ago1.9330.6583.6236.118
over 50 years ago11.7133.3247.51622.59
total50.6517.01053.75121.32
Southern Alpsn/a0.21000.0.0.0.0.2100
less than 10 years ago2.9271.6359.61414.011
11-20 years ago2.0321.53510.01413.512
21-30 years ago1.9331.6358.91412.312
31-40 years ago2.4291.2419.91413.412
41-50 years ago2.2300.65815.41118.310
over 50 years ago8.6155.41937.3651.35
total20.1911.91291.13123.12
Switzerlandn/a0.6580.0.0.4711.045
less than 10 years ago312.4226.58121.44460.22
11-20 years ago138.6418.31079.35236.23
21-30 years ago46.6612.81243.67103.04
31-40 years ago22.3109.71433.3865.35
41-50 years ago14.4125.12032.5852.06
over 50 years ago48.1617.81073.85139.73
total583.0190.14384.321057.41
© WSL, Swiss National Forest Inventory, 19.06.2020 #853463/319794
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