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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 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/a0.10.10.10.10.0.0.0.0.0.0.0.0.00.0
less than 10 years ago58.11.117.91.214.11.35.90.99.31.02.60.526.30.5
11-20 years ago15.30.89.40.98.81.03.40.77.20.91.90.59.30.4
21-30 years ago5.70.54.60.65.30.81.70.55.50.82.40.54.60.3
31-40 years ago3.00.43.20.54.20.74.30.85.00.84.50.73.80.2
41-50 years ago1.80.33.30.52.20.53.20.74.10.73.10.62.70.2
over 50 years ago2.60.39.60.912.51.216.21.418.41.314.31.110.10.4
total86.60.748.11.547.21.834.81.849.41.728.81.456.90.5
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.40.13.30.52.90.64.30.82.00.50.70.31.80.2
11-20 years ago0.10.12.30.52.00.53.40.72.30.50.30.21.30.1
21-30 years ago0.20.11.60.41.30.41.80.51.90.50.60.31.00.1
31-40 years ago0.20.10.60.20.80.31.70.51.60.40.60.30.80.1
41-50 years ago0.0.0.50.21.30.41.60.51.10.40.80.30.70.1
over 50 years ago0.10.11.40.42.60.67.11.03.20.64.50.72.40.2
total1.10.29.70.910.91.119.91.512.11.17.50.88.00.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago6.40.518.41.216.11.310.31.28.61.06.70.810.30.4
11-20 years ago2.50.38.40.99.61.15.00.97.70.93.70.65.40.3
21-30 years ago1.00.24.60.64.40.84.20.85.80.84.40.73.50.2
31-40 years ago0.70.22.60.53.20.63.10.74.70.75.10.72.70.2
41-50 years ago0.40.12.30.51.60.54.20.82.20.55.80.82.30.2
over 50 years ago1.30.25.80.77.00.918.61.59.51.038.01.610.90.4
total12.30.742.21.542.01.845.32.038.51.763.71.535.10.5
totaln/a0.10.10.10.10.0.0.0.0.0.0.0.0.00.0
less than 10 years ago64.91.039.61.533.11.720.51.619.91.410.01.038.50.6
11-20 years ago17.90.820.11.220.31.511.81.317.11.35.90.816.10.5
21-30 years ago6.90.510.80.911.01.27.71.013.21.27.50.99.00.4
31-40 years ago3.90.46.50.88.21.09.21.111.31.110.21.07.30.3
41-50 years ago2.20.36.20.75.20.88.91.17.40.99.61.05.70.3
over 50 years ago4.00.416.81.122.21.541.92.031.11.656.81.623.40.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862984/329315
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