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NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
inside perimeterless than 10 years ago30.712.8..30.14.317.64.620.46.19.84.722.62.5
11-20 years ago23.211.7..18.63.719.14.825.06.57.34.118.32.3
21-30 years ago15.410.0..16.83.513.24.113.75.29.74.614.32.1
31-40 years ago23.011.7..8.82.75.92.96.83.87.34.18.31.7
41-50 years ago....10.62.96.02.99.14.37.34.18.31.7
over 50 years ago7.77.4..15.13.438.25.925.06.558.57.728.22.7
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago52.32.276.11.636.01.621.92.723.42.410.21.542.70.8
11-20 years ago24.31.914.21.323.11.412.32.216.82.17.21.317.80.7
21-30 years ago9.21.34.90.812.01.17.91.817.02.29.41.59.70.5
31-40 years ago5.61.01.90.57.80.97.11.711.21.88.31.46.40.4
41-50 years ago3.60.81.10.46.20.810.12.05.21.36.41.24.70.4
over 50 years ago4.90.91.80.515.01.240.73.326.52.558.52.518.80.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago51.82.176.11.635.31.520.92.423.02.310.21.441.00.8
11-20 years ago24.31.814.21.322.61.313.82.017.82.07.21.217.80.7
21-30 years ago9.41.34.90.812.51.09.11.716.62.09.41.410.10.5
31-40 years ago6.11.01.90.57.90.96.81.510.61.78.21.36.50.4
41-50 years ago3.50.81.10.46.70.89.21.75.71.26.51.25.00.4
over 50 years ago5.00.91.80.515.01.140.12.926.32.458.52.319.50.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #161833/148212
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