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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: accessible 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) %± %± %± %± %± %± %±
n/a0-20%1.40.31.30.50.60.42.01.01.20.62.71.11.40.2
21-40%1.90.35.01.010.41.714.82.510.71.513.72.35.70.4
41-60%6.10.521.81.817.22.128.73.227.92.223.62.814.30.6
61-80%17.70.931.92.128.42.529.63.237.92.424.62.924.20.7
over 80%72.91.040.12.243.42.624.93.022.22.135.53.154.40.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeter0-20%0.0.4.02.01.31.30.0.1.01.00.0.1.20.5
21-40%4.03.94.92.25.32.65.12.06.32.54.22.45.11.0
41-60%4.34.216.73.75.22.524.33.929.74.621.14.819.41.8
61-80%21.18.429.54.527.65.133.54.238.04.930.85.531.72.1
over 80%70.69.444.94.960.75.637.24.325.14.443.95.942.52.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.40.41.90.61.70.80.70.50.70.51.30.51.20.2
21-40%0.0.5.11.03.51.15.51.48.91.63.40.74.40.4
41-60%1.50.89.71.411.01.819.12.330.82.68.41.212.80.7
61-80%13.72.130.12.222.02.537.52.935.42.723.21.827.00.9
over 80%84.42.253.22.361.82.837.12.824.32.363.82.054.61.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.30.21.80.41.20.41.00.41.00.41.50.41.30.1
21-40%1.70.35.00.77.00.98.51.19.51.06.10.85.20.3
41-60%5.50.516.11.113.31.323.41.729.21.613.51.114.20.4
61-80%17.30.830.91.425.71.634.01.937.01.724.21.425.80.5
over 80%74.30.946.21.452.81.733.01.823.41.454.71.653.50.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #863408/329739
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