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NFI3
forest area
rockfall 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
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtectdegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/a0-20%0.90.21.20.31.30.40.90.41.70.50.70.31.10.1
21-40%1.50.33.20.64.10.87.21.15.10.83.40.63.30.2
41-60%3.40.46.60.85.70.96.81.19.81.14.00.75.40.3
61-80%7.80.610.00.910.41.27.01.112.51.25.50.88.70.4
over 80%72.61.025.01.423.61.78.21.115.51.37.81.037.10.5
total86.20.746.01.645.02.030.11.944.51.821.31.555.60.6
inside perimeter0-20%0.0.0.10.10.0.0.30.20.0.0.10.10.10.0
21-40%0.0.0.0.0.0.0.0.0.10.10.40.20.10.0
41-60%0.00.00.20.10.80.41.30.50.0.0.40.20.30.1
61-80%0.00.00.50.20.90.41.70.51.50.51.70.50.80.1
over 80%0.80.21.50.44.00.82.80.71.00.44.60.82.00.2
total0.90.22.20.55.70.96.21.02.60.67.20.93.20.2
outside perimeter0-20%0.0.1.40.41.70.50.70.41.00.41.50.40.80.1
21-40%0.00.01.50.41.60.53.50.85.50.82.50.51.80.2
41-60%0.30.14.80.74.40.89.91.211.81.25.90.84.60.3
61-80%1.30.211.21.08.71.116.31.516.41.413.61.28.80.4
over 80%11.20.732.81.432.91.833.31.918.21.448.01.825.20.5
total12.90.751.71.649.32.063.71.952.91.871.41.641.10.6
total0-20%0.90.22.80.53.00.72.00.62.70.62.30.52.00.2
21-40%1.60.34.80.75.70.910.71.310.81.16.20.85.20.3
41-60%3.70.411.61.010.91.218.01.621.61.510.41.110.30.4
61-80%9.10.621.71.320.01.625.01.830.41.720.81.518.20.5
over 80%84.60.759.21.460.41.744.42.034.71.760.31.764.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #861377/327708
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