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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%1.60.41.30.41.40.51.60.44.41.31.70.2
21-40%1.90.52.00.46.01.014.91.114.82.26.90.4
41-60%7.10.95.50.719.61.626.41.423.02.614.90.6
61-80%19.31.416.91.128.71.932.31.524.32.723.90.7
over 80%70.11.574.21.244.42.024.81.433.42.952.60.7
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeter0-20%0.0.0.0.0.0.0.90.91.71.71.00.7
21-40%5.45.20.0.0.0.6.22.33.52.45.11.6
41-60%0.0.0.0.0.0.16.83.510.64.112.72.4
61-80%27.210.30.0.61.717.230.54.314.34.726.73.1
over 80%67.510.8100.0.38.317.245.64.669.96.154.53.5
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.0.1.01.01.30.51.70.41.00.41.30.2
21-40%0.0.0.0.4.10.86.60.73.40.74.60.4
41-60%3.01.30.90.99.31.222.21.310.21.214.30.7
61-80%13.52.613.43.327.91.933.31.425.21.828.00.9
over 80%83.62.884.73.557.42.036.31.460.22.051.81.0
total100.0.100.0.100.0.100.0.100.0.100.0.
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 #861489/327820
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