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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 without shrub forest NFI1/NFI2/NFI3/NFI4
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%1.20.41.30.30.60.20.20.10.20.20.70.1
21-40%0.90.31.80.42.10.53.00.40.30.21.90.2
41-60%5.40.74.70.67.80.88.60.72.60.66.30.3
61-80%15.01.115.11.114.01.112.50.84.30.812.80.5
over 80%57.91.667.81.323.11.39.90.79.01.233.10.5
total80.41.390.70.947.61.634.21.216.31.554.90.6
inside perimeter0-20%0.0.0.0.0.0.0.10.10.20.20.00.0
21-40%0.10.10.0.0.0.0.20.10.20.20.10.0
41-60%0.0.0.0.0.0.0.80.20.60.30.30.1
61-80%0.50.20.0.0.50.21.90.31.00.40.90.1
over 80%1.30.40.10.10.30.23.10.45.90.91.90.2
total1.90.40.10.10.80.36.00.67.81.13.20.2
outside perimeter0-20%0.0.0.10.10.50.20.80.20.30.20.40.1
21-40%0.0.0.0.2.20.53.50.51.30.41.60.2
41-60%0.50.20.10.14.30.612.80.85.70.95.50.3
61-80%2.40.51.20.314.51.120.11.019.11.611.80.4
over 80%14.71.17.70.830.11.422.51.049.42.022.60.5
total17.61.29.20.951.61.659.81.275.81.741.90.6
total0-20%1.20.41.30.31.10.31.10.30.60.31.10.1
21-40%1.00.31.80.44.40.66.70.61.70.53.60.3
41-60%5.90.84.80.612.11.022.21.08.91.112.10.4
61-80%18.01.216.41.128.91.434.51.224.51.725.50.6
over 80%73.91.475.61.153.51.435.51.164.31.957.60.6
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #861415/327746
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