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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%1.10.22.60.72.81.03.01.33.81.13.11.41.90.2
21-40%1.80.37.01.29.11.724.03.311.51.815.92.86.00.4
41-60%4.00.514.41.612.61.922.73.222.02.318.93.09.70.5
61-80%9.00.721.71.923.22.523.13.228.02.525.73.415.60.6
over 80%84.20.854.22.252.42.827.23.334.82.636.43.766.80.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeter0-20%0.0.4.64.50.0.5.53.80.0.2.02.02.21.1
21-40%0.0.0.0.0.0.0.0.5.35.25.43.02.11.0
41-60%4.84.78.25.614.15.820.96.90.0.5.33.09.72.2
61-80%4.84.722.28.816.36.127.57.457.811.424.05.824.33.1
over 80%90.36.565.010.169.67.646.28.336.911.263.36.661.73.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.0.2.80.73.51.01.10.61.90.72.10.62.00.3
21-40%0.30.33.00.83.21.05.51.210.41.53.40.84.40.4
41-60%2.20.99.21.38.91.615.51.922.32.18.31.211.20.6
61-80%10.11.821.61.817.62.125.62.330.92.419.01.721.30.8
over 80%87.32.063.42.066.82.552.32.634.52.467.12.061.11.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
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 #861443/327774
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