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NFI3
forest area
rockfall SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: protection forest region
unit: 1000 ha
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)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%3.9232.4291.6351.0452.4291.04512.413
21-40%6.4186.5175.2198.2157.3165.11938.87
41-60%14.41113.3127.2167.81613.9126.01862.75
61-80%32.9720.1913.3127.91617.8108.215100.44
over 80%306.8150.3630.179.31422.1911.713430.31
total364.5192.7457.4534.3763.5532.07644.51
inside perimeter0-20%0.0.0.21000.0.0.4710.0.0.21000.850
21-40%0.0.0.0.0.0.0.0.0.21000.6580.850
41-60%0.21000.4711.0451.5380.0.0.6583.624
61-80%0.21001.0451.2411.9312.2302.6289.115
over 80%3.5242.9275.1193.2241.4386.81723.09
total3.9224.5217.3167.0163.82310.81337.37
outside perimeter0-20%0.0.2.9262.2300.8501.4382.2309.514
21-40%0.21003.1252.0314.0227.9163.72220.810
41-60%1.2419.6145.61911.21316.8108.91453.46
61-80%5.51922.5911.11318.6923.4820.49101.44
over 80%47.5666.1442.0537.9626.1871.94291.42
total54.36104.2362.8472.5375.64107.13476.61
total0-20%3.9235.5193.8222.2303.8233.42422.79
21-40%6.6179.6147.21612.21315.4119.31460.46
41-60%15.81123.3913.91120.5930.8715.511119.84
61-80%38.6743.7625.6828.4743.4631.27210.83
over 80%357.81119.3377.1350.5549.5590.43744.61
total422.81201.41127.52113.82142.82150.021158.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #861509/327840
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