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NFI4
forest area
avalanches 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 NFI1/NFI2/NFI3/NFI4
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)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%5.1201.0450.21000.21000.4710.21007.117
21-40%5.8192.5294.0223.0264.6210.47120.210
41-60%20.8915.3117.5166.31814.0123.12567.15
61-80%62.3527.0812.6128.51520.495.319136.24
over 80%262.0235.6725.386.61711.21311.113351.82
total356.0181.4449.7524.5850.6520.19582.41
inside perimeter0-20%0.0.0.8500.21000.0.0.0.0.0.1.045
21-40%0.21001.0450.8501.0451.2410.4714.621
41-60%0.21003.4240.6585.3194.6212.03216.011
61-80%1.0455.8183.7237.9156.8173.72329.08
over 80%3.3248.7158.7158.6144.3215.91839.67
total4.72019.81014.01122.9817.01011.91290.24
outside perimeter0-20%0.21001.4371.0440.21000.21000.6583.723
21-40%0.0.4.3211.6352.5293.9231.43813.612
41-60%0.8508.0154.2229.91416.2105.91844.96
61-80%7.11725.7811.01319.7919.6921.19104.24
over 80%43.3645.9633.7619.3913.91162.24218.33
total51.4685.3451.5551.6553.7591.13384.62
total0-20%5.3193.3241.4370.4710.6580.85011.813
21-40%6.0187.8166.4176.4179.7142.13038.47
41-60%21.8926.7812.31221.5934.8711.013128.04
61-80%70.4558.5527.4836.1646.9530.17269.32
over 80%308.6190.2367.7434.6629.4779.13609.61
total412.11186.41115.2299.02121.32123.121057.11
© WSL, Swiss National Forest Inventory, 18.06.2020 #863474/329805
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