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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 NFI3/NFI4
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/a0.20.10.0.0.20.20.0.0.0.0.0.0.10.0
high road infrastructure, ground based60.01.09.91.09.21.11.90.62.90.60.80.325.30.5
medium road infrastructure, ground based19.70.98.80.97.31.02.10.63.80.71.50.410.40.4
low road infrastructure, ground based3.20.44.30.65.70.95.81.09.51.13.40.74.70.3
high road infrastructure, supported by cable or helicopter2.70.410.41.07.11.05.30.94.50.82.20.55.00.3
medium road infrastructure, supported by cable or helicopter0.50.28.80.98.51.16.61.09.51.15.10.85.10.3
low road infrastructure, supported by cable or helicopter0.0.3.80.67.11.08.41.214.31.38.21.05.10.3
total86.20.746.01.645.02.030.11.944.51.821.31.555.60.6
inside perimetern/a0.10.10.10.10.0.0.0.0.0.0.30.20.10.0
high road infrastructure, ground based7.00.68.50.99.41.13.00.72.30.62.70.66.00.3
medium road infrastructure, ground based3.80.46.70.86.20.93.10.72.00.51.50.44.00.3
low road infrastructure, ground based0.70.25.10.74.70.87.81.18.01.06.50.94.30.3
high road infrastructure, supported by cable or helicopter1.90.318.11.218.71.517.21.69.21.110.61.110.10.4
medium road infrastructure, supported by cable or helicopter0.30.110.31.011.11.217.91.614.61.322.61.59.60.4
low road infrastructure, supported by cable or helicopter0.0.5.10.74.80.820.81.719.41.534.51.710.30.4
total13.80.754.01.655.02.069.91.955.51.878.71.544.40.6
totaln/a0.30.10.10.10.20.20.0.0.0.0.30.20.20.1
high road infrastructure, ground based67.11.018.41.218.61.54.90.95.20.83.50.731.30.5
medium road infrastructure, ground based23.50.915.61.113.51.35.20.95.80.93.00.614.40.4
low road infrastructure, ground based3.90.49.30.910.41.213.61.417.51.410.01.19.00.4
high road infrastructure, supported by cable or helicopter4.60.528.51.425.81.722.61.713.61.312.81.215.00.5
medium road infrastructure, supported by cable or helicopter0.80.219.21.219.61.524.41.824.21.627.81.614.70.4
low road infrastructure, supported by cable or helicopter0.0.8.90.911.91.329.31.933.71.842.81.715.40.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 25.09.2020 #900495/364863
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