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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 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 ago58.41.118.91.216.11.56.41.010.81.22.90.628.70.5
11-20 years ago15.40.89.91.09.71.23.50.88.51.01.90.510.00.4
21-30 years ago5.70.54.40.75.40.91.90.66.20.91.80.54.60.3
31-40 years ago3.10.43.20.63.40.73.20.74.90.82.80.63.30.2
41-50 years ago1.80.33.10.52.20.62.70.72.80.61.80.52.30.2
over 50 years ago2.30.36.60.88.31.112.51.411.31.210.21.16.80.3
total86.60.746.01.645.02.030.11.944.51.821.31.555.80.6
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.40.13.60.63.10.74.60.92.20.60.90.31.90.2
11-20 years ago0.10.12.30.52.10.63.70.82.70.60.40.21.40.2
21-30 years ago0.20.11.60.41.40.52.00.62.10.50.80.31.10.1
31-40 years ago0.20.10.70.30.70.31.70.51.70.50.80.30.80.1
41-50 years ago0.0.0.60.21.50.51.60.51.30.40.90.40.70.1
over 50 years ago0.10.11.40.42.50.67.21.13.20.75.20.82.30.2
total1.10.210.10.911.41.320.81.613.31.39.01.08.30.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago6.50.519.61.318.11.511.41.39.81.18.01.011.10.4
11-20 years ago2.40.38.80.910.71.25.61.09.01.14.30.75.80.3
21-30 years ago1.00.24.90.74.60.84.60.96.80.95.30.83.70.2
31-40 years ago0.70.22.70.53.50.73.50.84.70.85.20.82.70.2
41-50 years ago0.40.12.40.51.70.54.60.92.50.66.20.92.30.2
over 50 years ago1.20.25.40.74.90.919.41.69.41.140.61.810.30.4
total12.20.743.91.643.51.949.02.142.21.869.71.635.90.6
totaln/a0.10.10.0.0.0.0.0.0.0.0.0.0.00.0
less than 10 years ago65.21.042.11.637.31.922.41.722.81.611.81.241.80.6
11-20 years ago18.00.821.01.322.51.612.81.420.21.56.60.917.30.5
21-30 years ago6.90.510.91.011.31.38.61.215.11.37.91.09.40.4
31-40 years ago4.00.46.70.87.71.08.41.211.31.28.71.06.80.3
41-50 years ago2.20.36.00.75.50.98.81.26.60.98.91.05.30.3
over 50 years ago3.70.413.41.115.71.439.12.024.01.656.01.819.40.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862980/329311
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