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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: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
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 harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
outside of perimetern/a0.6580.21000.21000.0.0.0.1.045
high road infrastructure, ground based92.14161.3227.7810.5141.241292.92
medium road infrastructure, ground based49.6633.9724.4910.6132.230120.84
low road infrastructure, ground based10.2143.12510.11425.895.21954.46
high road infrastructure, supported by cable or helicopter5.8185.71820.61021.993.42457.46
medium road infrastructure, supported by cable or helicopter1.0451.04518.71030.787.71659.16
low road infrastructure, supported by cable or helicopter0.0.0.0.3.32443.0712.31258.76
total159.42205.21105.13142.5332.07644.31
inside perimetern/a0.21000.21000.21000.0.0.4711.045
high road infrastructure, ground based18.71011.01324.8911.6134.02270.25
medium road infrastructure, ground based10.4135.51917.21011.0132.23046.56
low road infrastructure, ground based1.4371.6359.21527.389.81449.36
high road infrastructure, supported by cable or helicopter6.3171.63536.6756.0515.811116.24
medium road infrastructure, supported by cable or helicopter0.6580.65816.81059.4533.97111.34
low road infrastructure, supported by cable or helicopter0.0.0.0.5.11963.0551.85119.94
total37.7620.59110.03228.32117.92514.41
totaln/a0.8500.4710.4710.0.0.4712.032
high road infrastructure, ground based110.93172.3252.5622.295.219363.12
medium road infrastructure, ground based60.0539.4641.7621.694.521167.33
low road infrastructure, ground based11.7134.72019.41053.1614.911103.84
high road infrastructure, supported by cable or helicopter12.1127.31657.2577.9519.210173.73
medium road infrastructure, supported by cable or helicopter1.6351.63535.5790.0441.66170.43
low road infrastructure, supported by cable or helicopter0.0.0.0.8.415106.0464.14178.63
total197.11225.71215.11370.81150.021158.71
© WSL, Swiss National Forest Inventory, 25.09.2020 #900526/364894
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