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NFI4
forest area
protection forest perimeter SilvaProtect · degree of transportation system density by method of timber harvest
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
protection forest perimeter SilvaProtectdegree of transportation system density by method of timber harvest %± %± %± %± %± %±
outside of perimetern/a0.30.20.10.10.10.10.0.0.0.0.10.0
high road infrastructure, ground based46.61.671.11.312.71.02.80.40.80.324.60.4
medium road infrastructure, ground based25.41.415.21.112.01.03.00.41.70.510.50.4
low road infrastructure, ground based5.30.71.50.44.70.67.20.63.90.74.90.3
high road infrastructure, supported by cable or helicopter2.90.52.60.59.80.95.90.52.40.55.00.3
medium road infrastructure, supported by cable or helicopter0.50.20.40.29.10.98.50.65.20.85.30.3
low road infrastructure, supported by cable or helicopter0.0.0.0.1.70.413.00.89.81.05.90.3
total81.11.290.90.850.11.540.41.123.71.556.30.6
inside perimetern/a0.10.10.10.10.10.10.0.0.30.20.10.0
high road infrastructure, ground based9.40.94.90.611.21.03.00.42.50.65.90.3
medium road infrastructure, ground based5.30.72.40.57.80.82.90.41.60.43.90.2
low road infrastructure, ground based0.70.30.70.24.10.67.10.66.30.94.20.3
high road infrastructure, supported by cable or helicopter3.10.50.70.216.61.114.60.810.01.19.80.4
medium road infrastructure, supported by cable or helicopter0.30.20.30.17.90.815.50.821.71.59.50.4
low road infrastructure, supported by cable or helicopter0.0.0.0.2.30.416.50.834.01.610.30.4
total18.91.29.10.849.91.559.61.176.31.543.70.6
totaln/a0.40.20.20.10.20.10.0.0.30.20.20.1
high road infrastructure, ground based56.01.576.01.323.91.35.80.53.30.630.50.5
medium road infrastructure, ground based30.71.417.71.119.71.25.90.53.20.614.40.4
low road infrastructure, ground based6.00.82.20.48.90.914.30.810.21.19.10.4
high road infrastructure, supported by cable or helicopter6.00.73.30.526.41.320.50.912.41.214.90.4
medium road infrastructure, supported by cable or helicopter0.80.30.70.217.01.124.01.026.91.614.80.4
low road infrastructure, supported by cable or helicopter0.0.0.0.3.90.629.51.043.81.716.20.4
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 25.09.2020 #900501/364869
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