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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 NFI3/NFI4
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%1.5370.0.0.0.1.537
21-40%2.7270.21000.0.2.926
41-60%10.1130.0.0.65810.713
61-80%26.180.8504.32131.17
over 80%78.232.42723.68104.22
total118.623.42328.47150.51
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%4.0220.31000.21004.521
over 80%35.140.0.4.52039.63
total41.230.31005.11946.62
Western Plateau0-20%1.0430.0.0.0.1.043
21-40%0.6570.0.0.0.0.657
41-60%3.8210.0.0.0.3.821
61-80%7.7150.0.0.9508.614
over 80%31.050.0.4.12135.14
total44.130.0.5.01949.12
Central Plateau0-20%0.9480.0.0.21001.143
21-40%0.7560.0.0.0.0.756
41-60%3.8210.0.0.21004.021
61-80%11.6120.0.1.43713.011
over 80%42.740.21007.41550.33
total59.730.21009.21369.11
Eastern Plateau0-20%0.9490.0.0.0.0.949
21-40%2.9250.0.0.0.2.925
41-60%3.0250.0.0.0.3.025
61-80%15.7100.0.0.65816.210
over 80%79.130.0.5.41984.62
total101.610.0.6.018107.61
Western Pre-Alps0-20%0.31000.0.0.31000.670
21-40%1.5410.0.2.1333.525
41-60%3.5250.0.3.5237.016
61-80%4.4210.21008.61413.111
over 80%8.0140.0.11.11119.16
total17.690.210025.6743.33
Central Pre-Alps0-20%0.8500.0.0.6571.337
21-40%1.3380.0.1.5352.925
41-60%10.4130.0.3.52313.911
61-80%17.2100.65815.01132.87
over 80%21.590.210026.8748.54
total51.250.85047.4599.42
Eastern Pre-Alps0-20%0.21000.0.0.4700.657
21-40%3.1250.0.1.0444.222
41-60%5.1190.0.2.3297.416
61-80%8.7140.21007.41616.310
over 80%19.090.47024.4743.84
total36.160.65835.6672.32
Northwestern Alps0-20%0.0.0.0.1.6341.634
21-40%1.4370.0.2.0313.523
41-60%4.9200.4714.4219.714
61-80%8.7150.6588.11517.410
over 80%8.7142.42815.61026.76
total23.783.52431.7658.93
Central Alps0-20%0.0.0.21000.0.0.2100
21-40%1.2410.4710.4702.031
41-60%2.9250.21001.6354.719
61-80%3.9211.0452.1297.015
over 80%4.1201.6355.91611.59
total12.1113.3249.91125.44
Northeastern Alps0-20%0.0.0.0.0.5570.557
21-40%1.5340.0.0.9442.426
41-60%2.0320.21002.3294.520
61-80%2.5270.21004.7197.415
over 80%3.4222.9258.61315.08
total9.5133.32417.0829.85
Southwestern Alps0-20%0.8500.0.0.4711.241
21-40%5.4190.4713.7239.514
41-60%10.2141.63514.81126.68
61-80%10.3133.52325.6839.46
over 80%7.6151.53528.1737.16
total34.377.01672.53113.82
Southeastern Alps0-20%1.0450.0.0.4711.438
21-40%7.2160.21006.51713.911
41-60%18.4101.04522.6942.16
61-80%23.691.24127.8852.65
over 80%13.2121.43818.2932.87
total63.553.82375.64142.82
Southern Alps0-20%0.6580.21000.8501.635
21-40%4.1220.4713.3247.815
41-60%7.4161.04510.31318.710
61-80%7.3161.43827.0835.77
over 80%12.6127.81665.7486.13
total32.0710.813107.13150.02
Switzerland0-20%8.7150.4715.31914.412
21-40%33.881.63521.51056.96
41-60%86.954.32166.45157.73
61-80%151.639.914133.74295.22
over 80%364.1220.910249.42634.41
total645.2137.17476.311158.51
© WSL, Swiss National Forest Inventory, 18.06.2020 #861536/327867
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