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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: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
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/a0.10.10.0.0.0.0.0.0.0.0.0.0.00.0
less than 10 years ago58.61.119.21.316.41.54.71.011.51.33.10.730.10.6
11-20 years ago15.30.89.71.09.81.23.60.88.31.12.10.610.30.4
21-30 years ago5.60.53.90.64.70.91.60.65.10.90.80.34.20.3
31-40 years ago2.90.43.20.63.10.72.10.63.80.81.50.52.80.2
41-50 years ago1.70.32.80.52.30.61.80.62.30.61.30.52.00.2
over 50 years ago2.10.34.90.76.91.111.11.410.71.27.51.15.60.3
total86.40.743.71.643.12.024.81.941.72.016.31.555.10.6
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.40.13.90.63.50.85.11.02.50.60.90.42.10.2
11-20 years ago0.10.12.50.52.30.64.30.93.20.70.50.31.60.2
21-30 years ago0.20.11.50.41.50.52.10.62.20.60.80.41.00.1
31-40 years ago0.30.10.70.30.60.31.60.61.60.50.60.30.70.1
41-50 years ago0.0.0.60.31.70.51.80.61.60.51.00.40.80.1
over 50 years ago0.10.11.40.42.50.78.31.22.90.75.80.92.40.2
total1.10.210.61.012.21.423.11.814.01.49.71.28.50.4
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago6.60.520.81.318.81.612.51.59.81.28.81.111.60.4
11-20 years ago2.40.38.90.911.11.36.41.110.01.24.60.96.00.3
21-30 years ago1.10.25.10.74.90.94.70.97.51.14.90.93.70.3
31-40 years ago0.70.22.80.53.70.82.90.74.60.84.40.82.50.2
41-50 years ago0.40.12.60.51.70.54.50.92.70.76.61.02.30.2
over 50 years ago1.30.25.40.84.40.921.11.89.81.244.62.010.20.4
total12.50.745.71.644.72.052.12.244.32.074.01.836.40.6
totaln/a0.10.10.0.0.0.0.0.0.0.0.0.0.00.0
less than 10 years ago65.61.043.91.638.72.022.31.923.81.712.81.343.90.6
11-20 years ago17.80.821.11.423.31.814.31.621.41.77.21.117.90.5
21-30 years ago6.80.610.51.011.11.38.41.214.71.46.51.09.00.4
31-40 years ago3.90.46.80.87.41.16.61.110.01.26.51.06.00.3
41-50 years ago2.20.36.00.85.71.08.11.26.61.09.01.25.10.3
over 50 years ago3.60.411.71.113.81.440.42.223.41.758.02.018.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862983/329314
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