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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
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 ago58.31.019.01.216.31.46.91.010.81.12.90.628.30.5
11-20 years ago15.50.810.10.99.51.13.40.78.01.02.00.59.90.4
21-30 years ago5.70.54.80.75.80.92.60.77.10.91.80.54.90.3
31-40 years ago3.10.43.30.63.60.73.80.84.70.83.40.63.50.2
41-50 years ago1.70.32.90.52.50.63.30.72.80.62.00.52.40.2
over 50 years ago2.40.37.10.88.61.113.11.412.51.211.51.17.40.3
total86.70.747.31.546.31.933.21.845.81.823.71.556.50.6
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.40.13.40.63.10.74.30.82.20.50.80.31.90.2
11-20 years ago0.10.12.30.52.10.53.50.72.50.60.40.21.40.2
21-30 years ago0.20.11.50.41.30.41.90.52.10.50.70.31.00.1
31-40 years ago0.20.10.70.30.70.31.60.51.60.50.70.30.70.1
41-50 years ago0.0.0.60.21.50.51.60.51.30.40.90.30.70.1
over 50 years ago0.10.11.30.42.60.66.81.03.00.64.90.82.30.2
total1.10.29.90.911.31.219.81.612.81.28.51.08.10.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago6.40.519.01.217.41.410.71.39.61.17.70.910.80.4
11-20 years ago2.40.38.50.910.31.25.20.98.61.04.20.75.70.3
21-30 years ago1.00.24.90.74.50.84.50.86.70.95.20.83.70.2
31-40 years ago0.70.22.60.53.30.73.40.74.40.74.90.82.60.2
41-50 years ago0.40.12.30.51.60.54.50.82.50.66.00.82.30.2
over 50 years ago1.30.25.60.75.30.918.71.69.61.139.81.710.30.4
total12.20.742.81.542.41.947.12.041.41.867.81.635.40.6
totaln/a0.10.10.0.0.0.0.0.0.0.0.0.0.00.0
less than 10 years ago65.01.041.51.536.81.921.91.722.71.511.41.141.00.6
11-20 years ago18.10.820.91.321.91.612.21.319.11.46.60.917.00.5
21-30 years ago6.90.511.21.011.61.29.01.216.01.37.80.99.70.4
31-40 years ago4.00.46.60.87.61.08.91.210.71.19.01.06.80.3
41-50 years ago2.20.35.80.75.60.99.51.26.50.99.01.05.40.3
over 50 years ago3.80.414.01.116.41.438.52.025.11.656.21.820.10.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862985/329316
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