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NFI4
forest area
degree of transportation system density by method of timber harvest
unit of reference: production region
unit: %
unit of evaluation: protection forest perimeter SilvaProtect: access. forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
degree of transportation system density by method of timber harvest %± %± %± %± %± %±
n/a0.50.51.01.00.20.20.0.0.40.20.20.1
high road infrastructure, ground based49.73.653.84.922.51.85.10.63.40.713.60.7
medium road infrastructure, ground based27.73.227.14.415.71.64.80.61.90.69.00.6
low road infrastructure, ground based3.81.47.72.68.41.212.01.08.31.19.60.6
high road infrastructure, supported by cable or helicopter16.72.77.62.633.32.024.51.313.41.422.60.8
medium road infrastructure, supported by cable or helicopter1.60.92.81.615.31.526.01.328.81.921.60.8
low road infrastructure, supported by cable or helicopter0.0.0.0.4.60.927.61.343.92.023.30.8
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 11.07.2020 #845447/311778
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