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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
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%1.40.31.60.50.80.52.21.01.80.64.41.31.70.2
21-40%1.90.36.21.112.51.718.12.513.91.614.82.26.90.4
41-60%6.20.521.91.818.22.029.73.027.72.123.02.614.80.6
61-80%17.90.931.32.028.02.327.52.935.12.324.32.723.90.7
over 80%72.50.939.12.140.52.522.52.721.41.933.42.952.60.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeter0-20%0.0.4.01.91.31.30.0.1.01.00.0.1.20.5
21-40%4.03.94.92.15.12.55.12.06.12.44.22.45.11.0
41-60%4.34.217.53.85.02.424.33.930.04.621.14.819.61.8
61-80%21.18.429.24.529.15.133.54.238.34.830.85.531.92.1
over 80%70.69.444.54.959.65.537.24.324.54.343.95.942.22.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.40.42.10.71.70.81.10.61.00.61.20.51.30.2
21-40%0.0.5.01.03.51.16.11.49.21.63.30.74.50.4
41-60%1.50.89.81.410.81.819.12.330.12.58.91.213.00.7
61-80%13.62.129.92.221.72.437.42.835.82.623.41.727.00.9
over 80%84.52.253.22.362.32.836.32.823.92.363.21.954.21.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.30.22.00.41.20.41.30.51.40.42.00.51.50.2
21-40%1.70.35.60.78.11.010.31.211.21.06.60.86.00.3
41-60%5.60.516.41.113.91.223.91.728.91.513.81.114.60.4
61-80%17.40.830.51.425.61.633.01.835.71.624.21.425.60.5
over 80%73.90.945.51.451.21.731.51.822.71.453.31.652.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #863406/329737
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