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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 NFI1/NFI2/NFI3/NFI4 combined
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..30.84.517.94.721.66.810.95.123.32.6
11-20 years ago23.211.7..18.33.819.44.829.77.58.14.519.02.4
21-30 years ago15.410.0..15.43.511.94.013.55.68.14.513.22.1
31-40 years ago23.011.7..8.72.86.02.95.43.72.72.77.41.6
41-50 years ago....11.53.16.12.910.85.18.14.59.01.8
over 50 years ago7.77.4..15.43.538.86.018.96.462.18.028.22.8
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago53.12.276.21.637.81.722.23.124.12.811.41.845.60.9
11-20 years ago23.81.914.51.324.21.515.02.719.02.68.21.618.70.7
21-30 years ago8.61.24.70.811.31.16.71.915.52.46.51.48.60.5
31-40 years ago5.91.01.80.57.81.03.91.410.62.05.21.35.60.4
41-50 years ago3.50.81.10.46.00.88.42.15.11.47.41.54.50.4
over 50 years ago5.11.01.70.512.91.243.93.725.72.861.22.817.00.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago52.62.276.21.637.01.621.12.623.72.611.41.743.70.8
11-20 years ago23.81.914.51.323.51.416.22.320.52.48.21.518.80.7
21-30 years ago8.81.24.70.811.81.18.11.715.32.26.71.39.00.5
31-40 years ago6.31.11.80.57.90.94.41.39.91.84.91.25.70.4
41-50 years ago3.40.81.10.46.70.87.71.75.81.47.51.44.90.4
over 50 years ago5.11.01.70.513.21.142.53.124.82.661.32.618.00.6
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 #163357/149737
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