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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/ha30.50.937.42.131.12.566.03.344.72.558.43.536.70.7
20-39 m2/ha43.31.128.72.031.02.624.13.031.02.530.43.336.90.8
40-59 m2/ha21.00.920.81.824.02.47.61.817.72.08.62.019.40.7
from 60 m2/ha5.20.513.11.514.01.92.41.06.71.32.61.27.00.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterto 19 m2/ha25.59.823.19.025.26.946.98.237.810.432.76.332.53.3
20-39 m2/ha50.011.235.710.230.97.426.67.339.510.441.86.736.63.4
40-59 m2/ha19.78.931.810.029.37.216.16.013.67.318.55.321.42.9
from 60 m2/ha4.84.79.46.314.65.510.44.99.16.17.03.49.52.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterto 19 m2/ha21.22.424.41.822.32.228.12.225.32.133.21.926.50.8
20-39 m2/ha47.53.037.42.136.52.740.72.541.42.441.32.140.41.0
40-59 m2/ha26.32.625.81.926.72.421.22.025.82.119.61.723.90.8
from 60 m2/ha5.01.312.41.414.41.910.11.57.51.36.01.09.20.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
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 #861319/327650
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