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NFI4
forest area
protection forest perimeter SilvaProtect · degree of transportation system density by method of timber 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
protection forest perimeter SilvaProtectdegree of transportation system density by method of timber harvest %± %± %± %± %± %± %±
outside of perimetern/a0.20.10.0.0.10.10.0.0.0.0.0.0.10.0
high road infrastructure, ground based59.71.09.90.98.91.11.80.52.70.60.80.324.60.5
medium road infrastructure, ground based19.90.99.30.97.61.02.30.63.70.71.70.510.50.4
low road infrastructure, ground based3.30.44.20.65.80.96.71.09.31.13.90.74.90.3
high road infrastructure, supported by cable or helicopter2.70.410.61.07.21.05.50.94.50.72.40.55.00.3
medium road infrastructure, supported by cable or helicopter0.50.19.30.98.51.17.01.09.81.15.20.85.40.3
low road infrastructure, supported by cable or helicopter0.0.4.00.68.11.09.91.215.81.39.81.05.90.3
total86.30.747.31.546.31.933.21.845.81.823.71.556.40.6
inside perimetern/a0.10.10.10.10.0.0.0.0.0.0.30.20.10.0
high road infrastructure, ground based7.00.58.30.98.91.12.80.72.20.52.50.65.80.3
medium road infrastructure, ground based3.80.46.50.85.90.93.10.72.00.51.60.43.90.2
low road infrastructure, ground based0.70.24.90.74.50.87.51.18.01.06.30.94.20.3
high road infrastructure, supported by cable or helicopter1.80.317.71.218.41.516.21.58.91.010.01.19.90.4
medium road infrastructure, supported by cable or helicopter0.30.110.20.911.01.217.31.514.21.321.71.59.50.4
low road infrastructure, supported by cable or helicopter0.0.5.00.75.00.819.91.618.91.434.01.610.30.4
total13.70.752.71.553.71.966.81.854.21.876.31.543.60.6
totaln/a0.30.10.10.10.10.10.0.0.0.0.30.20.20.1
high road infrastructure, ground based66.71.018.31.217.81.54.60.84.90.83.30.630.40.5
medium road infrastructure, ground based23.70.915.81.113.61.35.40.95.70.83.20.614.40.4
low road infrastructure, ground based4.00.49.10.910.31.214.21.417.31.410.21.19.10.4
high road infrastructure, supported by cable or helicopter4.60.428.31.425.61.721.71.713.41.212.41.214.90.4
medium road infrastructure, supported by cable or helicopter0.80.219.51.219.51.524.31.724.01.626.91.614.80.4
low road infrastructure, supported by cable or helicopter0.0.9.00.913.11.329.81.934.71.743.81.716.20.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 25.09.2020 #900496/364864
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