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NFI4
forest area
avalanches SilvaProtect · main type of harvest
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectmain type of harvest %± %± %± %± %± %± %±
n/askidder48.71.119.41.219.31.57.81.111.11.12.80.625.40.5
forwarder34.21.03.80.62.60.62.50.64.50.72.00.514.20.4
mobile tower yarder2.50.39.30.96.61.05.20.97.40.91.50.44.90.3
cable crane0.50.16.60.84.90.80.90.48.91.01.80.53.30.2
helicopter0.30.18.00.812.31.216.31.514.01.214.11.28.10.3
others0.50.20.20.10.60.30.50.30.0.1.50.40.50.1
total86.70.747.31.546.31.933.21.845.81.823.71.556.50.6
inside perimeterskidder0.60.22.10.51.40.52.90.72.10.50.40.21.30.1
forwarder0.20.10.0.0.10.10.30.20.10.10.0.0.10.0
mobile tower yarder0.20.12.90.51.90.55.70.93.40.61.00.41.90.2
cable crane0.0.2.40.53.80.72.50.63.30.71.80.51.70.2
helicopter0.00.02.50.54.10.88.11.13.90.75.10.82.90.2
others0.00.00.0.0.0.0.20.20.0.0.10.10.00.0
total1.10.29.90.911.31.219.81.612.81.28.51.08.10.3
outside perimeterskidder7.50.616.01.115.61.48.11.17.30.96.00.89.70.4
forwarder2.70.31.60.42.20.61.40.51.90.52.50.62.20.2
mobile tower yarder1.30.212.81.08.81.112.31.312.71.28.01.07.60.3
cable crane0.20.17.80.89.81.24.20.811.71.28.61.05.60.3
helicopter0.30.14.50.65.90.920.61.67.50.941.11.710.00.3
others0.30.10.10.10.0.0.50.30.30.21.50.40.40.1
total12.20.742.81.542.41.947.12.041.41.867.81.635.40.6
totalskidder56.71.137.51.536.31.818.81.620.41.59.21.036.40.6
forwarder37.11.05.40.75.00.84.20.86.40.94.50.716.50.4
mobile tower yarder4.00.424.91.317.31.423.31.723.41.510.61.114.40.4
cable crane0.70.216.81.218.51.57.61.124.01.512.31.210.60.4
helicopter0.60.215.01.122.41.645.02.025.51.660.31.721.00.5
others0.90.20.30.20.60.31.20.40.30.23.10.61.00.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862881/329212
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