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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 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/a0.10.10.0.0.0.0.0.0.0.0.0.0.10.0
less than 10 years ago67.41.138.92.231.52.618.02.719.42.010.72.147.90.8
11-20 years ago17.80.920.51.819.42.210.82.215.01.87.61.816.90.6
21-30 years ago6.50.69.71.311.61.85.41.611.41.69.11.98.10.5
31-40 years ago3.50.46.91.29.11.613.52.410.31.517.22.56.80.4
41-50 years ago2.00.37.31.24.91.210.02.18.51.411.62.14.90.4
over 50 years ago2.60.416.81.723.62.342.33.535.42.443.83.315.30.6
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 ago35.010.035.34.726.75.121.53.716.33.79.63.523.11.9
11-20 years ago12.66.822.84.217.94.417.53.419.74.04.32.517.01.7
21-30 years ago17.68.015.63.611.63.79.52.616.53.88.53.312.71.5
31-40 years ago22.38.86.92.57.63.08.92.613.43.58.33.39.81.3
41-50 years ago0.0.5.72.313.23.98.22.59.83.010.13.68.61.3
over 50 years ago12.66.813.83.423.04.934.54.324.24.359.15.828.82.0
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 ago52.83.144.62.440.92.923.32.523.32.411.01.330.41.0
11-20 years ago19.82.520.01.924.52.611.31.920.82.36.01.015.90.8
21-30 years ago8.41.711.21.511.11.99.41.715.72.17.41.110.30.7
31-40 years ago5.41.46.21.27.91.67.11.511.51.88.41.27.80.6
41-50 years ago3.41.15.41.13.91.19.41.76.01.39.11.26.50.5
over 50 years ago10.21.912.61.611.81.939.52.922.72.458.12.129.10.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.10.10.0.0.0.0.0.0.0.0.0.0.00.0
less than 10 years ago65.21.041.01.534.81.821.21.720.51.410.81.139.80.6
11-20 years ago17.90.820.51.321.31.612.41.317.81.36.30.816.60.5
21-30 years ago6.90.510.91.011.41.28.11.113.71.27.90.99.20.4
31-40 years ago4.00.46.60.88.41.19.61.211.11.110.71.17.40.3
41-50 years ago2.20.36.30.85.40.99.31.27.70.99.91.05.80.3
over 50 years ago3.70.414.71.118.71.539.42.029.21.654.41.721.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #863050/329381
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