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NFI4
forest area
rockfall SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: production region
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%2.6283.0262.5293.6243.22514.812
21-40%3.2254.3217.21731.188.31554.06
41-60%11.71311.51223.3958.0613.911118.44
61-80%31.3735.5733.0769.5514.911184.33
over 80%114.33154.7251.6552.2618.310391.12
total163.02208.91117.63214.4358.75762.61
inside perimeter0-20%0.0.0.0.0.0.0.21000.21000.471
21-40%0.21000.0.0.0.1.6350.4712.230
41-60%0.0.0.0.0.0.4.0221.2415.220
61-80%1.0440.0.1.0457.5162.03211.513
over 80%2.5280.21000.65811.5138.01522.99
total3.7230.21001.63524.9911.81342.37
outside perimeter0-20%0.0.0.21001.5374.1221.4387.217
21-40%0.0.0.0.4.52114.6124.32123.49
41-60%1.0450.210010.81349.7613.01274.85
61-80%4.6212.82731.0772.9530.77142.03
over 80%28.8817.51064.8581.3472.24264.72
total34.4720.79112.73222.62121.72512.01
total0-20%2.6283.2253.9237.9164.82022.39
21-40%3.4244.32111.71347.4613.01279.75
41-60%12.71211.71234.17111.7428.28198.43
61-80%36.9738.3765.15149.9347.66337.82
over 80%145.62172.42117.13145.1398.53678.71
total201.11229.81231.91462.01192.111316.90
© WSL, Swiss National Forest Inventory, 18.06.2020 #861560/327891
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