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NFI4
forest area
rockfall SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtectdegree of cover (aerial photo, 5 classes) %± %± %± %± %± %±
n/a0-20%1.30.41.20.30.70.30.70.20.70.30.90.1
21-40%1.60.41.80.43.00.55.80.53.20.63.50.2
41-60%5.70.75.00.69.10.811.00.75.40.87.90.3
61-80%15.61.115.41.014.61.112.90.85.50.813.20.4
over 80%56.81.567.51.322.61.210.00.78.81.030.90.5
total81.11.290.90.850.11.540.41.123.71.556.30.6
inside perimeter0-20%0.0.0.0.0.0.0.10.10.10.10.00.0
21-40%0.10.10.0.0.0.0.40.10.20.20.20.1
41-60%0.0.0.0.0.0.0.90.20.80.30.40.1
61-80%0.50.20.0.0.50.21.80.30.90.30.90.1
over 80%1.20.30.10.10.30.22.60.44.90.81.80.2
total1.90.40.10.10.70.35.70.57.00.93.20.2
outside perimeter0-20%0.0.0.10.10.60.20.80.20.50.30.50.1
21-40%0.0.0.0.2.00.43.60.42.20.51.80.2
41-60%0.50.20.10.14.50.611.90.76.80.95.70.3
61-80%2.30.51.20.313.81.018.00.917.81.311.40.4
over 80%14.31.17.60.828.31.319.70.942.01.721.00.5
total17.11.29.00.849.21.553.91.169.31.640.40.6
total0-20%1.30.41.30.31.30.31.50.31.40.41.40.2
21-40%1.70.41.80.45.00.69.70.65.70.85.50.3
41-60%6.20.85.00.613.61.023.80.912.91.214.00.4
61-80%18.41.216.61.128.81.332.61.024.21.525.40.5
over 80%72.41.375.21.151.21.432.31.055.81.653.70.6
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #861420/327751
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