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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 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%5.1201.0450.21000.8501.0450.6588.715
21-40%7.0174.1225.8185.4197.2164.12233.68
41-60%22.1919.0109.91410.21418.4107.41687.05
61-80%65.0530.4815.11110.31323.697.316151.73
over 80%267.2238.2726.487.61513.21212.612365.22
total366.3192.7457.4534.3763.5532.07646.31
inside perimeter0-20%0.0.0.8500.21000.0.0.0.0.0.1.045
21-40%0.21001.0450.8501.0451.2410.6584.820
41-60%0.21003.4240.8505.7185.8182.72718.610
61-80%1.0456.0183.9228.1157.2164.12230.48
over 80%3.3249.1148.9148.8144.7206.11841.07
total4.72020.4914.61123.7819.01013.41195.84
outside perimeter0-20%0.21001.7351.0440.4710.4711.0454.721
21-40%0.0.4.5212.0313.1265.5193.12518.210
41-60%0.8508.4155.81810.61317.8108.61552.16
61-80%7.11726.7811.81220.9921.7924.48112.64
over 80%43.7647.1634.9620.7914.91167.54228.82
total51.8688.3455.5555.8460.35104.53416.32
total0-20%5.3193.5241.4371.2411.4381.63514.412
21-40%7.2169.6148.6159.51413.9117.81556.66
41-60%23.1930.8716.51026.6842.1618.710157.73
61-80%73.0563.1530.8739.4652.6535.77294.72
over 80%314.2194.5370.2337.1632.8786.13634.91
total422.81201.41127.52113.82142.82150.021158.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #863475/329806
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