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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%1.50.41.40.41.30.50.60.30.90.91.20.2
21-40%1.10.42.00.44.51.08.81.22.01.43.50.3
41-60%6.70.95.20.716.31.725.11.815.63.611.60.6
61-80%18.71.416.71.229.32.136.52.126.54.423.40.8
over 80%72.01.674.71.248.62.229.01.954.94.960.40.8
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeter0-20%0.0.0.0.0.0.1.01.02.02.01.10.8
21-40%5.45.20.0.0.0.3.21.82.02.02.91.3
41-60%0.0.0.0.0.0.13.63.58.34.09.92.3
61-80%27.210.30.0.61.717.231.14.712.64.826.73.4
over 80%67.510.8100.0.38.317.251.15.175.16.259.33.7
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.0.1.11.01.00.41.40.40.40.31.00.2
21-40%0.0.0.0.4.30.95.90.81.70.63.90.4
41-60%3.01.30.90.98.41.221.51.37.51.213.10.7
61-80%13.72.713.63.428.02.033.61.525.32.028.10.9
over 80%83.32.984.53.658.32.137.71.565.12.154.01.0
total100.0.100.0.100.0.100.0.100.0.100.0.
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 #861481/327812
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