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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: 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%1.30.41.30.31.10.30.80.21.70.41.10.1
21-40%1.60.41.90.43.10.56.70.54.30.64.10.2
41-60%5.80.75.00.610.10.912.50.77.30.89.00.3
61-80%15.61.115.51.014.21.015.00.77.80.914.00.4
over 80%56.91.567.31.322.31.211.30.79.50.929.70.5
total81.11.290.90.850.71.546.41.030.51.457.90.5
inside perimeter0-20%0.0.0.0.0.0.0.00.00.10.10.00.0
21-40%0.10.10.0.0.0.0.30.10.20.10.20.1
41-60%0.0.0.0.0.0.0.90.20.60.30.40.1
61-80%0.50.20.0.0.40.21.60.31.00.30.90.1
over 80%1.20.30.10.10.30.22.50.34.20.61.70.2
total1.80.40.10.10.70.25.40.56.10.83.20.2
outside perimeter0-20%0.0.0.10.10.60.20.90.20.70.30.50.1
21-40%0.0.0.0.1.90.43.20.42.20.51.80.2
41-60%0.50.20.10.14.70.610.80.66.80.85.70.3
61-80%2.30.51.20.313.41.015.80.716.01.210.80.4
over 80%14.31.17.60.828.01.317.60.837.61.520.10.5
total17.11.29.00.848.61.548.21.063.31.538.90.5
total0-20%1.30.41.40.31.70.41.70.32.50.51.70.2
21-40%1.70.41.90.45.00.610.30.66.80.86.00.3
41-60%6.30.85.10.614.71.024.20.914.71.115.10.4
61-80%18.41.216.71.128.11.332.41.024.81.425.70.5
over 80%72.41.375.01.150.51.331.40.951.31.551.50.5
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #861421/327752
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