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NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
inside perimeter0-20%....4.34.3....3.13.11.71.2
21-40%10.19.6..4.34.38.65.8..3.13.14.31.9
41-60%..5.65.44.34.329.19.344.416.69.55.213.73.2
61-80%20.012.638.911.517.47.941.610.122.213.918.76.926.74.1
over 80%69.914.555.611.769.69.620.88.333.315.765.58.453.64.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%1.30.31.60.50.90.51.00.61.30.61.10.51.30.2
21-40%1.80.44.90.95.81.37.81.610.71.65.31.14.80.4
41-60%6.30.716.51.616.02.028.92.634.22.415.01.815.70.6
61-80%22.41.235.52.025.72.333.72.835.52.428.42.328.40.8
over 80%68.21.341.52.151.62.728.52.618.32.050.32.649.80.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.30.31.60.51.10.50.90.51.20.51.20.51.30.2
21-40%1.80.44.80.95.71.27.91.510.51.55.11.14.80.4
41-60%6.20.716.11.515.31.928.92.534.42.414.61.715.60.6
61-80%22.41.235.62.025.22.334.32.735.22.427.62.228.40.8
over 80%68.21.341.92.152.72.628.02.518.71.951.52.549.90.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164877/151259
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