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NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectdegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/a0-20%1.40.31.10.50.40.32.41.21.60.71.91.11.40.2
21-40%1.90.34.41.010.21.815.72.811.31.812.92.65.20.4
41-60%6.00.520.41.817.32.229.73.529.02.523.23.313.50.6
61-80%17.70.932.82.226.32.630.13.537.22.722.73.323.50.7
over 80%72.91.041.22.245.92.822.13.120.82.239.43.856.50.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeter0-20%0.0.4.02.01.41.40.0.0.0.0.0.1.10.5
21-40%4.03.94.92.25.42.64.31.96.52.54.32.45.01.0
41-60%4.34.216.73.75.32.624.13.930.64.720.34.919.51.8
61-80%21.18.429.54.527.05.234.34.338.15.030.25.531.72.1
over 80%70.69.444.94.960.95.737.34.424.84.445.16.042.82.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.40.41.90.61.80.80.70.50.70.50.90.41.10.2
21-40%0.0.5.11.03.61.15.51.49.11.63.00.74.40.4
41-60%1.50.89.51.410.51.819.12.329.62.68.21.212.50.7
61-80%13.72.130.22.221.32.437.52.936.02.723.31.827.11.0
over 80%84.42.253.42.362.92.837.12.824.62.464.62.054.91.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.30.21.70.41.10.41.10.41.00.41.10.41.20.1
21-40%1.70.34.80.76.81.08.31.19.81.15.20.84.90.3
41-60%5.50.515.31.113.01.323.31.829.51.712.51.213.60.4
61-80%17.30.831.31.524.21.734.62.036.81.823.81.525.40.6
over 80%74.30.946.91.555.01.832.61.923.01.557.41.754.80.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #863403/329734
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