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NFI4
forest area
rockfall SilvaProtect · basal area (standing live trees)
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 SilvaProtectbasal area (standing live trees) %± %± %± %± %± %± %±
n/ato 19 m2/ha26.20.815.91.112.81.318.71.618.51.411.61.119.40.5
20-39 m2/ha37.51.013.71.114.51.48.01.114.41.36.90.921.10.5
40-59 m2/ha18.20.810.20.911.21.22.70.78.51.02.10.511.20.4
from 60 m2/ha4.30.46.20.86.51.00.80.43.10.60.70.33.90.3
total86.20.746.01.645.02.030.11.944.51.821.31.555.60.6
inside perimeterto 19 m2/ha0.20.10.50.21.40.52.80.70.70.32.30.51.00.1
20-39 m2/ha0.50.10.80.31.70.51.70.51.20.43.10.61.20.1
40-59 m2/ha0.20.10.70.31.70.51.00.40.40.21.40.40.70.1
from 60 m2/ha0.00.00.20.10.90.40.70.30.30.20.50.30.30.1
total0.90.22.20.55.70.96.21.02.60.67.20.93.20.2
outside perimeterto 19 m2/ha2.70.412.61.010.51.217.51.613.51.223.21.510.70.4
20-39 m2/ha6.10.519.41.218.41.526.01.822.31.529.71.616.70.5
40-59 m2/ha3.40.413.31.013.31.313.71.313.61.214.31.39.90.4
from 60 m2/ha0.70.26.50.87.11.06.51.03.50.74.20.73.80.2
total12.90.751.71.649.32.063.71.952.91.871.41.641.10.6
totalto 19 m2/ha29.20.829.01.324.71.538.91.832.71.537.11.631.10.5
20-39 m2/ha44.01.033.91.534.61.935.62.037.81.839.71.839.10.6
40-59 m2/ha21.80.924.21.326.21.717.41.522.61.517.81.421.80.5
from 60 m2/ha5.00.512.91.014.51.38.01.16.90.95.40.88.00.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #861293/327624
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