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NFI4
forest area
rockfall SilvaProtect · stand stability
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtectstand stability %± %± %± %± %± %± %±
n/acritical2.00.33.00.53.10.73.20.73.80.71.40.42.60.2
less stable33.01.022.71.321.21.611.31.316.41.49.41.122.70.5
stable51.21.120.31.320.61.615.71.524.31.610.51.130.40.6
total86.20.746.01.645.02.030.11.944.51.821.31.555.60.6
inside perimetercritical0.0.0.0.0.50.30.70.30.30.20.80.30.30.1
less stable0.50.21.20.43.30.72.90.71.30.44.50.81.80.2
stable0.40.11.00.32.00.62.60.71.10.41.80.51.20.1
total0.90.22.20.55.70.96.21.02.60.67.20.93.20.2
outside perimetercritical0.20.13.20.63.50.76.01.04.10.74.80.82.70.2
less stable5.30.526.51.425.81.730.41.921.91.541.21.820.40.5
stable7.40.622.01.319.91.627.31.826.91.725.51.618.00.5
total12.90.751.71.649.32.063.71.952.91.871.41.641.10.6
totalcritical2.20.36.20.87.11.09.91.28.11.07.00.95.60.3
less stable38.81.150.51.650.32.044.62.139.61.855.11.844.90.6
stable59.01.143.31.642.61.945.52.152.21.937.81.749.60.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #860769/327100
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