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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 NFI1/NFI2/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/a0.20.10.0.0.40.40.0.0.0.0.0.0.20.1
high road infrastructure, ground based70.41.122.72.122.02.67.92.47.51.73.01.749.10.9
medium road infrastructure, ground based22.41.021.42.116.62.35.72.110.01.99.22.919.50.7
low road infrastructure, ground based3.30.48.21.412.82.119.63.621.92.617.93.87.60.5
high road infrastructure, supported by cable or helicopter3.20.423.62.115.42.316.43.411.42.012.83.38.70.5
medium road infrastructure, supported by cable or helicopter0.60.217.01.919.12.525.54.018.92.524.74.38.00.5
low road infrastructure, supported by cable or helicopter0.0.7.11.313.72.224.93.930.32.932.34.67.00.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.70.50.20.20.0.0.0.0.0.0.40.30.20.1
high road infrastructure, ground based51.22.915.61.618.02.14.11.04.21.13.10.814.00.7
medium road infrastructure, ground based27.32.612.91.511.81.74.51.13.71.02.00.69.50.6
low road infrastructure, ground based5.21.39.31.38.51.511.41.612.91.88.51.29.40.6
high road infrastructure, supported by cable or helicopter13.52.034.12.135.22.625.02.217.12.013.81.523.40.9
medium road infrastructure, supported by cable or helicopter2.10.819.41.718.52.125.42.226.72.329.62.021.40.8
low road infrastructure, supported by cable or helicopter0.0.8.51.27.91.529.72.335.52.542.62.122.10.8
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 based67.71.018.71.319.71.65.01.05.50.93.10.733.30.5
medium road infrastructure, ground based23.00.916.61.213.91.44.81.06.31.03.20.715.00.5
low road infrastructure, ground based3.60.48.80.910.41.313.41.516.61.510.11.28.40.4
high road infrastructure, supported by cable or helicopter4.60.529.51.526.71.822.91.914.71.413.71.415.30.5
medium road infrastructure, supported by cable or helicopter0.80.218.41.318.71.625.41.923.51.728.81.814.00.5
low road infrastructure, supported by cable or helicopter0.0.7.90.910.41.228.52.033.31.940.91.913.80.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 25.09.2020 #900507/364875
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