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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 NFI3/NFI4 combined
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 ago30.712.834.56.229.27.119.24.614.04.910.34.922.32.5
11-20 years ago23.211.717.25.019.56.217.84.524.06.07.74.317.92.3
21-30 years ago15.410.020.75.312.25.112.33.814.04.910.24.914.32.1
31-40 years ago23.111.75.22.97.34.16.83.012.04.67.74.38.41.7
41-50 years ago..8.63.714.65.56.93.010.04.25.13.58.41.7
over 50 years ago7.77.413.84.517.25.937.05.726.06.259.07.928.82.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago65.91.441.22.238.32.723.32.724.02.39.91.643.50.8
11-20 years ago18.71.122.51.922.62.313.52.219.42.17.31.318.00.7
21-30 years ago6.60.710.91.411.31.87.71.716.22.09.11.59.40.5
31-40 years ago3.40.57.11.18.21.56.51.611.71.78.01.46.40.4
41-50 years ago2.30.45.91.03.91.110.21.95.91.36.71.34.70.4
over 50 years ago3.00.512.41.515.72.038.83.122.82.259.02.518.10.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago65.51.440.52.137.32.522.32.322.82.110.01.541.70.8
11-20 years ago18.71.121.91.722.22.214.52.020.02.07.31.318.00.7
21-30 years ago6.70.711.91.411.41.78.81.615.91.89.21.49.80.5
31-40 years ago3.70.56.91.18.11.46.61.411.71.68.01.36.50.4
41-50 years ago2.30.46.21.05.11.19.51.66.41.26.51.25.00.4
over 50 years ago3.10.512.61.415.91.938.32.723.22.159.02.419.00.6
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 #164717/151099
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