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NFI4
forest area
rockfall SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Jura0-20%1.7350.0.0.0.1.735
21-40%3.0260.21000.0.3.125
41-60%10.4130.0.0.65810.913
61-80%26.980.8504.32131.97
over 80%78.732.42723.78104.92
total120.623.42328.67152.71
Eastern Jura0-20%0.8470.0.0.0.0.847
21-40%0.21000.0.0.0.0.2100
41-60%1.1450.0.0.4711.537
61-80%4.2220.31000.21004.721
over 80%35.740.0.4.52040.23
total42.030.31005.11947.42
Western Plateau0-20%1.0430.0.0.0.1.043
21-40%0.6570.0.0.0.0.657
41-60%4.0200.0.0.0.4.020
61-80%7.7150.0.0.9508.614
over 80%31.050.0.4.12135.14
total44.330.0.5.01949.22
Central Plateau0-20%0.9480.0.0.21001.143
21-40%0.7560.0.0.0.0.756
41-60%4.0210.0.0.21004.220
61-80%11.7120.0.1.43713.111
over 80%42.740.21007.61550.53
total60.020.21009.41369.71
Eastern Plateau0-20%0.9490.0.0.0.0.949
21-40%2.9250.0.0.0.2.925
41-60%3.2240.0.0.0.3.224
61-80%16.0100.0.0.65816.610
over 80%79.920.0.5.41985.32
total102.910.0.6.018108.91
Western Pre-Alps0-20%0.31000.0.0.31000.670
21-40%1.6380.0.2.1333.724
41-60%3.5250.0.3.5237.016
61-80%4.7200.21008.61413.511
over 80%8.2140.0.11.11119.46
total18.490.210025.6744.23
Central Pre-Alps0-20%1.2410.0.0.6571.733
21-40%1.7330.0.1.5353.324
41-60%11.0120.0.3.92214.910
61-80%18.0100.65815.21133.86
over 80%22.590.210027.0749.84
total54.450.85048.25103.42
Eastern Pre-Alps0-20%0.21000.0.0.4700.657
21-40%3.4250.0.1.0444.421
41-60%5.5190.0.2.5288.015
61-80%9.7130.21007.41617.310
over 80%19.690.47024.4744.44
total38.360.65835.8674.82
Northwestern Alps0-20%0.0.0.0.1.6341.634
21-40%2.2300.0.2.0314.321
41-60%5.8180.4714.42110.513
61-80%8.9140.6588.11517.69
over 80%8.9142.42816.01027.36
total25.883.52432.1661.43
Central Alps0-20%0.0.0.21000.0.0.2100
21-40%1.6350.4710.4702.428
41-60%2.9250.21001.8334.918
61-80%4.1211.2412.3287.614
over 80%4.1201.8336.01511.99
total12.7103.72210.51126.94
Northeastern Alps0-20%0.0.0.0.0.5570.557
21-40%1.9310.0.0.9442.825
41-60%3.0260.21002.3295.418
61-80%2.9260.21005.0198.014
over 80%3.6223.1249.01315.78
total11.4123.52317.7832.54
Southwestern Alps0-20%1.0450.0.0.6581.635
21-40%7.2170.6584.12211.913
41-60%12.4121.63515.01129.08
61-80%11.1133.52325.9840.66
over 80%8.4151.53528.1737.96
total40.267.21673.73121.12
Southeastern Alps0-20%1.6350.0.0.4712.032
21-40%9.9140.4716.71717.010
41-60%19.4101.24123.3943.96
61-80%24.081.43829.0754.45
over 80%14.6111.43818.4934.46
total69.544.42177.84151.62
Southern Alps0-20%1.2410.21000.8502.230
21-40%5.1190.4713.5239.014
41-60%8.6151.24110.71320.59
61-80%8.6151.43828.2838.26
over 80%14.0117.81666.5488.33
total37.5711.013109.73158.32
Switzerland0-20%10.7140.4715.51916.611
21-40%41.972.03222.3966.25
41-60%94.844.72068.45168.03
61-80%158.7310.314137.03306.02
over 80%371.8221.39252.02645.11
total677.9138.77485.311201.91
© WSL, Swiss National Forest Inventory, 18.06.2020 #861546/327877
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