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NFI4
forest area
rockfall SilvaProtect · concept of transportation system
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtectconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aroad and skidding track254.0219.51017.4107.61619.1100.850318.42
road and skidding road78.3516.0118.6154.0225.4198.215120.64
road and cable line9.91431.3817.6108.01528.386.417101.54
road and flight path0.47110.51414.61121.5936.9715.61199.64
no access intended29.2833.8719.11011.4131.73327.78122.94
total371.91111.1377.3452.5591.6458.75763.01
inside perimeterroad and skidding track0.6580.21001.5381.4380.8500.4714.820
road and skidding road1.4380.6580.21000.4710.0.0.6583.125
road and cable line0.8502.3303.7231.7331.4381.83311.713
road and flight path0.4711.2412.4294.1222.6288.01518.610
no access intended0.8500.21001.6350.4710.0.1.0454.022
total3.9224.5219.3148.0154.82011.81342.37
outside perimeterroad and skidding track18.31014.51214.8117.61614.7111.83371.65
road and skidding road22.6914.5127.5163.2252.72710.41361.06
road and cable line6.31853.7531.2730.6747.1531.77200.63
road and flight path0.8507.9168.91527.2817.61058.45120.94
no access intended7.11717.5106.0186.7170.75019.41057.36
total55.16108.1368.5475.3382.94121.72511.51
totalroad and skidding track272.9234.2733.6716.61034.672.926394.92
road and skidding road102.3431.1816.3107.6168.21519.310184.73
road and cable line17.01187.3452.5540.3676.8439.96313.82
road and flight path1.63519.71025.9852.9557.1582.04239.22
no access intended37.1751.4626.8818.5102.52848.06184.23
total430.91223.71155.12135.82179.22192.111316.80
© WSL, Swiss National Forest Inventory, 18.06.2020 #860474/326805
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