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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
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/ha26.30.817.71.114.41.321.91.620.51.413.91.220.70.5
20-39 m2/ha37.41.013.61.114.31.48.01.114.21.37.20.920.80.5
40-59 m2/ha18.10.89.90.911.11.22.50.68.11.02.00.510.90.4
from 60 m2/ha4.50.46.20.76.50.90.80.33.10.60.60.33.90.2
total86.30.747.31.546.31.933.21.845.81.823.71.556.40.6
inside perimeterto 19 m2/ha0.20.10.50.21.50.52.80.71.10.42.30.51.10.1
20-39 m2/ha0.50.10.80.31.80.51.60.51.10.42.90.61.20.1
40-59 m2/ha0.20.10.70.31.70.51.00.40.40.21.30.40.70.1
from 60 m2/ha0.00.00.20.10.90.30.60.30.30.20.50.20.30.1
total0.90.22.20.55.90.96.01.02.90.67.00.93.20.2
outside perimeterto 19 m2/ha2.70.312.31.010.71.217.11.513.01.223.01.410.70.4
20-39 m2/ha6.10.518.91.217.41.524.71.721.21.528.61.616.30.5
40-59 m2/ha3.40.413.01.012.81.212.91.313.21.213.61.29.70.4
from 60 m2/ha0.60.26.20.76.90.96.10.93.80.74.10.73.70.2
total12.80.750.51.547.81.960.91.951.31.869.31.640.40.6
totalto 19 m2/ha29.30.830.51.326.61.541.81.834.51.539.21.632.40.5
20-39 m2/ha43.91.033.31.433.61.834.31.936.61.738.71.738.30.6
40-59 m2/ha21.60.923.61.325.61.616.41.421.81.416.91.321.30.5
from 60 m2/ha5.20.512.61.014.21.37.51.07.10.95.20.88.00.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #861290/327621
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