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NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
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 SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
n/an/a0.10.10.20.20.0.0.0.0.0.0.0.0.10.0
less than 10 years ago66.81.136.52.128.42.316.22.318.71.88.51.644.80.8
11-20 years ago17.80.919.31.718.92.08.71.713.91.66.51.416.20.6
21-30 years ago6.60.610.21.313.01.77.21.613.11.69.01.68.80.5
31-40 years ago3.50.46.81.18.31.411.92.09.31.314.62.16.60.4
41-50 years ago2.10.36.41.05.21.19.91.97.71.210.21.84.80.3
over 50 years ago3.10.420.61.726.42.246.03.137.42.351.32.918.70.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago33.59.733.94.627.25.021.63.616.43.69.53.422.91.8
11-20 years ago12.16.623.94.217.84.216.93.318.63.84.32.416.91.6
21-30 years ago16.97.715.93.512.03.69.22.516.53.78.43.312.81.5
31-40 years ago21.48.56.62.47.02.88.72.512.63.38.23.29.31.3
41-50 years ago0.0.5.52.212.23.67.92.49.22.810.03.68.31.2
over 50 years ago16.17.414.23.423.74.735.84.226.74.359.65.829.92.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago52.23.143.62.338.42.822.32.422.52.310.51.329.20.9
11-20 years ago20.32.519.81.922.82.410.91.819.62.25.71.015.30.8
21-30 years ago8.31.711.11.510.51.79.41.715.42.07.01.110.00.6
31-40 years ago5.31.46.21.17.61.57.11.511.81.88.21.17.80.6
41-50 years ago3.41.15.51.13.91.19.41.75.61.29.01.26.50.5
over 50 years ago10.41.913.81.616.82.141.02.925.12.359.62.031.20.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.10.10.10.10.0.0.0.0.0.0.0.0.00.0
less than 10 years ago64.71.039.11.532.21.719.81.519.81.39.81.037.80.5
11-20 years ago18.10.820.01.220.31.411.11.216.51.25.90.815.90.4
21-30 years ago6.90.511.10.911.91.28.51.114.41.27.70.99.50.4
31-40 years ago3.90.46.50.77.91.09.31.110.61.010.11.07.20.3
41-50 years ago2.20.36.00.75.40.89.31.17.10.99.40.95.70.3
over 50 years ago4.10.417.21.122.31.542.01.931.61.557.01.623.80.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #863058/329389
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