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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
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%1.40.31.40.50.30.32.51.12.30.83.21.31.60.2
21-40%1.90.35.61.011.01.818.02.714.21.913.62.56.10.4
41-60%6.20.520.61.818.22.230.93.327.92.422.93.014.00.6
61-80%17.90.932.22.126.82.527.73.234.62.523.03.023.40.7
over 80%72.51.040.22.143.72.620.92.821.02.137.33.554.90.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeter0-20%0.0.4.01.91.31.30.0.0.0.0.0.1.00.5
21-40%4.03.94.92.15.22.55.12.06.32.54.32.45.21.0
41-60%4.34.217.53.85.12.523.93.931.04.720.34.919.61.8
61-80%21.18.429.24.528.55.234.04.338.44.930.25.531.92.1
over 80%70.69.444.54.959.85.636.94.324.34.345.16.042.32.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.40.41.80.61.70.81.10.60.70.50.90.41.20.2
21-40%0.0.5.01.03.51.16.11.49.41.63.10.74.50.4
41-60%1.50.89.61.410.91.819.12.329.42.58.51.212.70.7
61-80%13.62.130.12.221.12.437.42.836.52.723.81.827.21.0
over 80%84.52.253.42.362.72.836.32.824.02.363.72.054.41.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.30.21.90.41.00.41.40.51.30.41.40.41.40.2
21-40%1.70.35.30.77.21.09.91.211.21.15.70.85.50.3
41-60%5.60.515.61.113.61.323.91.728.91.612.91.214.00.4
61-80%17.40.831.01.424.61.633.51.935.91.724.21.525.40.5
over 80%74.00.946.31.453.61.731.31.822.71.455.81.653.70.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #863407/329738
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