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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 NFI3/NFI4
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/askidder48.71.118.91.219.01.57.41.111.21.22.70.625.60.5
forwarder34.21.03.80.62.60.62.10.64.70.82.00.514.50.4
mobile tower yarder2.50.39.20.96.61.05.00.97.71.01.60.44.90.3
cable crane0.50.16.40.84.70.80.70.48.81.11.90.53.20.2
helicopter0.30.17.50.811.41.214.51.512.11.212.11.27.20.3
others0.50.20.20.10.60.30.40.30.0.1.10.40.50.1
total86.60.746.01.645.02.030.11.944.51.821.31.555.80.6
inside perimeterskidder0.60.22.20.51.50.52.90.72.10.50.40.21.30.2
forwarder0.20.10.0.0.20.20.30.20.10.10.0.0.10.0
mobile tower yarder0.20.13.00.52.00.56.11.03.60.71.10.42.00.2
cable crane0.0.2.30.53.80.82.70.73.50.71.90.51.80.2
helicopter0.00.02.60.54.00.88.61.24.00.75.40.83.00.2
others0.10.10.0.0.0.0.20.20.0.0.10.10.10.0
total1.10.210.10.911.41.320.81.613.31.39.01.08.30.3
outside perimeterskidder7.50.616.51.216.51.48.61.27.31.06.20.910.00.4
forwarder2.70.31.60.42.30.61.50.52.00.52.50.62.20.2
mobile tower yarder1.30.213.11.19.01.113.11.412.91.38.51.07.70.3
cable crane0.20.18.10.910.21.24.50.912.21.29.01.05.70.3
helicopter0.30.14.50.75.60.921.01.77.61.041.91.89.90.4
others0.30.10.10.10.0.0.30.20.30.21.60.50.40.1
total12.20.743.91.643.51.949.02.142.21.869.71.635.90.6
totalskidder56.71.137.61.536.91.918.91.620.61.59.31.136.90.6
forwarder37.11.05.40.75.10.94.00.86.80.94.50.816.80.5
mobile tower yarder4.00.425.21.417.61.524.21.724.11.611.21.114.60.4
cable crane0.70.216.81.218.71.57.91.124.51.612.91.210.70.4
helicopter0.60.214.61.121.11.644.12.123.71.659.41.820.00.5
others0.90.20.30.20.60.30.90.40.30.22.80.60.90.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862879/329210
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