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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
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%5.3191.6350.6581.0451.6352.23012.313
21-40%7.2166.5179.0158.41512.3137.31650.86
41-60%23.1922.8913.21213.81224.4911.413108.64
61-80%66.5532.6720.3912.81230.9812.013175.13
over 80%269.1240.7629.4710.51318.81016.511385.02
total371.31104.2472.4446.5688.0449.46731.81
inside perimeter0-20%0.0.0.8500.21000.0.0.21000.0.1.241
21-40%0.21001.0450.8501.2411.2410.6585.020
41-60%0.21003.6230.8505.9186.0182.92619.410
61-80%1.0456.0184.5218.1157.7164.32131.68
over 80%3.3249.1149.3149.1144.9206.11841.87
total4.72020.6915.61124.3820.0913.81199.04
outside perimeter0-20%0.21001.9331.0440.6580.6581.4385.719
21-40%0.0.4.5212.0313.5245.9183.72319.610
41-60%0.8508.8156.21710.91319.41010.11456.36
61-80%7.11726.9812.41221.3923.1826.58117.34
over 80%44.1647.8635.7620.7915.41071.64235.32
total52.2689.8457.3557.0464.54113.43434.12
total0-20%5.5194.3211.8331.6352.4293.62319.310
21-40%7.41612.01311.81313.11219.41011.61375.45
41-60%24.1935.2720.1930.6749.9624.58184.33
61-80%74.6565.5537.2742.2661.6542.86324.02
over 80%316.5197.6374.4340.2639.2694.23662.01
total428.11214.51145.32127.82172.52176.621264.91
© WSL, Swiss National Forest Inventory, 18.06.2020 #863480/329811
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