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NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: 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) %± %± %± %± %± %± %±
n/a0-20%1.50.32.00.61.30.62.30.91.70.65.41.31.90.2
21-40%2.00.36.41.012.21.617.62.413.81.614.22.07.10.4
41-60%6.20.522.31.718.62.031.02.928.22.123.72.515.50.6
61-80%17.90.931.02.027.82.328.12.835.32.225.52.524.20.7
over 80%72.40.938.32.040.12.421.12.521.01.931.22.751.30.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeter0-20%0.0.3.91.91.21.20.0.1.01.00.0.1.20.5
21-40%3.93.84.72.14.92.44.91.96.92.54.12.35.11.0
41-60%4.14.017.03.74.82.324.33.830.74.520.84.819.61.7
61-80%20.28.128.34.428.05.034.04.237.84.731.85.531.72.0
over 80%71.89.146.14.861.05.436.84.223.64.143.35.842.42.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.40.42.00.71.60.71.40.71.20.61.30.51.40.2
21-40%0.0.4.91.03.21.06.41.49.11.63.40.74.50.4
41-60%1.50.810.31.411.01.819.32.330.02.59.51.213.20.7
61-80%13.52.129.62.121.22.337.32.835.12.623.71.726.80.9
over 80%84.52.253.22.362.92.735.62.724.62.362.11.954.01.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.30.22.20.41.40.41.50.51.40.42.50.51.70.2
21-40%1.80.35.60.77.90.910.41.211.31.06.80.86.10.3
41-60%5.60.516.91.114.21.224.81.629.21.514.71.115.00.4
61-80%17.40.830.21.425.21.533.11.835.51.624.81.425.70.5
over 80%73.90.945.11.451.31.630.21.722.61.351.31.551.60.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #863411/329742
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