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NFI4
length of forest roads (NFI4) divided by forest area (forest roads)
trafficability of forest road · forest road width
unit of reference: protection forest region
unit: m/ha (column total)
unit of evaluation: total area
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
trafficability of forest roadforest road width m/ha± m/ha± m/ha± m/ha± m/ha± m/ha± m/ha±
18 t, 2-axle truck2.5 - 2.9 m1.8.0.7.0.9.0.5.3.1.1.8.1.5.
3.0 - 3.4 m0.0.0.0.0.0.0.0.0.0.0.0.0.0.
3.50 m and larger0.0.0.0.0.0.0.0.0.0.0.0.0.0.
total1.8.0.7.0.9.0.5.3.1.1.8.1.5.
26 t, 3-axle truck2.5 - 2.9 m0.0.0.0.0.0.0.0.0.0.0.0.0.0.
3.0 - 3.4 m1.1.2.9.2.3.6.3.4.6.1.4.2.5.
3.50 m and larger0.0.0.0.0.0.0.8.0.0.0.4.0.1.
total1.1.2.9.2.3.7.1.4.6.1.7.2.7.
28 - 32 t, 4-axle truck2.5 - 2.9 m0.0.0.0.0.0.0.0.0.0.0.0.0.0.
3.0 - 3.4 m3.3.4.3.3.5.1.5.2.1.0.8.2.8.
3.50 m and larger0.1.0.2.0.1.0.5.0.1.0.4.0.2.
total3.4.4.5.3.6.2.0.2.2.1.2.3.0.
40 - 44 t, min. 5-axle truck2.5 - 2.9 m0.0.0.0.0.0.0.0.0.0.0.0.0.0.
3.0 - 3.4 m40.1.6.9.7.0.2.3.1.2.0.2.16.7.
3.50 m and larger3.8.0.8.0.8.1.3.0.2.0.2.1.8.
total43.9.7.7.7.8.3.6.1.4.0.4.18.4.
total2.5 - 2.9 m1.8.0.7.0.9.0.5.3.1.1.8.1.5.
3.0 - 3.4 m44.6.14.1.12.8.10.1.7.9.2.4.22.0.
3.50 m and larger3.9.1.0.0.9.2.6.0.3.1.0.2.1.
total50.3.15.9.14.5.13.1.11.2.5.1.25.7.
© WSL, Swiss National Forest Inventory, 02.12.2020 #893474/359684
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