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NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
inside perimeterless than 10 years ago30.712.833.96.230.37.019.24.615.45.010.34.922.62.5
11-20 years ago23.211.718.75.120.96.217.84.523.15.87.74.318.32.3
21-30 years ago15.410.020.35.211.64.912.33.815.45.010.24.914.42.1
31-40 years ago23.111.75.12.97.03.96.83.011.54.47.74.38.21.6
41-50 years ago..8.53.613.95.36.93.09.64.15.13.58.21.6
over 50 years ago7.77.413.64.516.45.737.05.725.06.059.07.928.22.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago65.71.440.72.238.32.622.32.623.72.29.91.542.80.8
11-20 years ago18.81.122.51.822.12.213.12.118.32.07.11.317.80.7
21-30 years ago6.80.710.91.411.81.88.51.717.22.09.11.49.70.5
31-40 years ago3.40.57.11.17.81.47.31.611.01.68.31.46.40.4
41-50 years ago2.30.45.81.04.01.010.81.95.91.26.51.24.70.4
over 50 years ago3.10.513.11.516.12.038.03.023.92.259.22.518.70.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago65.41.440.02.037.42.421.62.322.72.09.91.441.10.8
11-20 years ago18.81.122.11.722.02.114.11.918.91.97.11.217.80.7
21-30 years ago6.80.711.91.311.71.69.31.617.01.89.21.410.10.5
31-40 years ago3.60.56.91.17.71.47.21.411.11.58.21.36.50.4
41-50 years ago2.20.46.01.05.11.110.01.66.31.26.41.25.00.4
over 50 years ago3.10.513.11.416.11.937.82.724.02.159.22.419.50.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #161839/148218
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