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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
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%5.3191.4380.21001.0451.6351.24110.714
21-40%7.2165.5196.8177.2179.9145.11941.77
41-60%22.9920.4911.31312.41219.4108.61595.04
61-80%66.5531.8716.71011.11324.088.615158.83
over 80%269.1239.7627.288.41514.61114.011373.02
total371.1198.8462.2540.2669.5437.57679.31
inside perimeter0-20%0.0.0.8500.21000.0.0.0.0.0.1.045
21-40%0.21001.0450.8501.2411.2410.6585.020
41-60%0.21003.6230.8505.7186.0182.72719.010
61-80%1.0456.0184.3218.1157.4164.12231.08
over 80%3.3249.1149.1148.8144.7206.11841.27
total4.72020.6915.21123.9819.4913.41197.24
outside perimeter0-20%0.21001.7351.0440.6580.4711.0454.920
21-40%0.0.4.5212.0313.5245.9183.32419.210
41-60%0.8508.6156.21710.91318.4109.21454.16
61-80%7.11726.9812.01221.3922.9925.58115.74
over 80%44.1647.8635.7620.7915.01068.34231.62
total52.2689.4456.9557.0462.74107.33425.52
total0-20%5.5193.9221.4371.6352.0322.23016.611
21-40%7.41611.0139.61411.91317.0109.01465.95
41-60%23.9932.6718.31029.0843.9620.59168.13
61-80%74.6564.7533.0740.6654.4538.26305.52
over 80%316.5196.6372.0337.9634.4688.33645.71
total427.91208.71134.32121.12151.62158.321201.91
© WSL, Swiss National Forest Inventory, 18.06.2020 #863479/329810
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