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NFI4
forest area
rockfall SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible 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) %± %± %± %± %± %±
n/a0-20%1.30.41.20.30.70.30.70.21.20.41.00.1
21-40%1.60.41.80.43.00.56.70.54.10.74.00.2
41-60%5.70.75.00.69.90.911.90.76.40.88.60.3
61-80%15.61.115.41.014.51.014.60.86.80.813.80.4
over 80%56.81.567.51.322.41.211.20.79.41.030.30.5
total81.11.290.90.850.61.545.21.028.01.457.70.5
inside perimeter0-20%0.0.0.0.0.0.0.00.00.10.10.00.0
21-40%0.10.10.0.0.0.0.30.10.20.20.20.0
41-60%0.0.0.0.0.0.0.90.20.70.30.40.1
61-80%0.50.20.0.0.40.21.60.30.90.30.80.1
over 80%1.20.30.10.10.30.22.40.34.40.71.70.2
total1.90.40.10.10.70.35.20.56.30.83.10.2
outside perimeter0-20%0.0.0.10.10.70.20.80.20.70.30.50.1
21-40%0.0.0.0.2.00.43.30.42.20.51.80.2
41-60%0.50.20.10.14.50.611.00.76.70.85.60.3
61-80%2.30.51.20.313.61.016.50.816.51.211.00.4
over 80%14.31.17.60.827.91.318.00.839.51.620.30.5
total17.11.29.00.848.71.549.51.065.71.539.20.5
total0-20%1.30.41.30.31.40.41.60.32.00.51.50.2
21-40%1.70.41.80.45.00.610.30.66.60.86.00.3
41-60%6.20.85.10.614.41.023.80.913.81.114.60.4
61-80%18.41.216.61.128.51.332.71.024.21.425.60.5
over 80%72.41.375.21.150.71.331.60.953.31.652.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #861425/327756
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