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NFI4
forest area
avalanches SilvaProtect · concept of transportation system
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aroad and skidding track253.6219.51017.4107.21619.1100.850317.62
road and skidding road78.5516.0118.6154.0225.4198.015120.64
road and cable line9.91430.5817.0108.01527.986.41799.74
road and flight path0.0.9.51413.41218.61033.8714.41189.75
no access intended29.2828.7816.1118.7151.73319.810104.34
total371.31104.2472.4446.5688.0449.46731.81
inside perimeterroad and skidding track0.8500.8500.9501.8333.4240.21007.916
road and skidding road2.1310.8500.6580.4710.21000.4714.521
road and cable line1.04512.1128.41511.71210.3134.62048.16
road and flight path0.21004.8203.9228.6155.9187.91531.48
no access intended0.6582.0321.8331.8330.21000.8507.117
total4.72020.6915.61124.3820.0913.81199.04
outside perimeterroad and skidding track17.91013.91215.2117.21611.9122.03268.15
road and skidding road21.3914.0126.9163.0262.62810.61358.56
road and cable line6.11843.3625.3820.4937.8628.67161.33
road and flight path1.0453.7235.31921.4912.11257.75101.24
no access intended5.91814.8114.6215.1190.210014.51145.16
total52.2689.8457.3557.0464.54113.43434.12
totalroad and skidding track272.3234.2733.5716.21034.472.926393.52
road and skidding road101.9430.8816.1107.4168.21519.110183.53
road and cable line17.01185.9450.6540.1676.0439.66309.22
road and flight path1.24118.11022.6948.5551.8680.04222.33
no access intended35.7745.5622.5915.6112.13035.17156.53
total428.11214.51145.32127.82172.52176.621264.91
© WSL, Swiss National Forest Inventory, 18.06.2020 #862425/328756
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