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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/a0.20.10.0.0.20.20.0.0.0.0.0.0.10.0
high road infrastructure, ground based60.51.19.91.09.51.22.00.63.10.70.50.327.00.5
medium road infrastructure, ground based19.20.99.31.07.11.11.40.54.20.81.50.510.70.4
low road infrastructure, ground based2.80.43.60.65.50.94.91.09.11.22.90.74.20.3
high road infrastructure, supported by cable or helicopter2.70.410.31.06.71.04.10.94.70.92.10.64.80.3
medium road infrastructure, supported by cable or helicopter0.50.27.40.98.21.16.31.17.91.14.00.84.40.3
low road infrastructure, supported by cable or helicopter0.0.3.10.65.91.06.21.112.71.35.30.93.80.3
total86.00.843.71.643.12.024.81.941.72.016.31.554.90.6
inside perimetern/a0.10.10.10.10.0.0.0.0.0.0.30.20.10.0
high road infrastructure, ground based7.20.68.80.910.31.33.10.82.40.62.60.66.30.3
medium road infrastructure, ground based3.80.47.30.96.71.03.40.82.10.61.70.54.30.3
low road infrastructure, ground based0.70.25.30.74.90.98.61.27.51.17.11.04.20.3
high road infrastructure, supported by cable or helicopter1.90.319.21.320.01.718.81.710.01.211.61.310.60.4
medium road infrastructure, supported by cable or helicopter0.30.110.91.010.51.319.11.715.61.524.71.79.60.4
low road infrastructure, supported by cable or helicopter0.0.4.80.74.50.922.31.920.71.635.61.99.90.4
total14.00.856.31.656.92.075.21.958.32.083.71.545.10.6
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 #900492/364860
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