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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/a0.20.10.0.0.30.30.0.0.0.0.0.0.20.1
high road infrastructure, ground based69.61.121.51.920.52.46.31.86.51.43.81.545.40.8
medium road infrastructure, ground based22.81.019.21.816.22.27.02.08.61.67.02.018.70.7
low road infrastructure, ground based3.70.49.31.412.62.019.43.021.32.316.12.98.50.5
high road infrastructure, supported by cable or helicopter3.10.422.72.015.82.117.62.910.01.710.52.48.90.5
medium road infrastructure, supported by cable or helicopter0.60.219.21.818.92.321.83.221.42.324.13.49.20.5
low road infrastructure, supported by cable or helicopter0.0.8.21.315.72.128.03.532.12.638.53.89.10.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.70.50.20.20.0.0.0.0.0.0.40.20.20.1
high road infrastructure, ground based51.22.915.81.617.12.04.31.04.21.03.40.713.60.7
medium road infrastructure, ground based27.52.612.51.411.31.64.41.03.60.91.90.69.00.6
low road infrastructure, ground based5.21.39.41.38.61.511.21.614.51.88.31.19.60.6
high road infrastructure, supported by cable or helicopter13.52.033.52.034.12.524.72.116.51.913.41.422.70.8
medium road infrastructure, supported by cable or helicopter2.10.819.21.720.12.125.62.226.32.228.81.921.70.8
low road infrastructure, supported by cable or helicopter0.0.9.51.38.81.529.82.334.92.443.92.023.30.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
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 #900505/364873
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