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NFI4
forest area
rockfall SilvaProtect · basal area (standing live trees)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtectbasal area (standing live trees) %± %± %± %± %± %±
n/ato 19 m2/ha20.91.131.01.116.11.019.80.813.91.220.60.5
20-39 m2/ha38.51.536.51.414.91.111.50.77.20.920.80.5
40-59 m2/ha17.61.218.61.111.81.06.20.52.00.510.90.4
from 60 m2/ha4.10.64.80.67.30.82.80.40.60.33.90.2
total81.11.290.90.850.11.540.41.123.71.556.30.6
inside perimeterto 19 m2/ha0.40.20.10.10.10.12.00.32.30.51.10.1
20-39 m2/ha1.00.30.0.0.40.21.70.32.90.61.20.1
40-59 m2/ha0.40.20.0.0.30.21.20.21.30.40.70.1
from 60 m2/ha0.10.10.0.0.0.0.70.20.50.20.30.1
total1.90.40.10.10.70.35.70.57.00.93.20.2
outside perimeterto 19 m2/ha2.80.52.70.510.70.914.40.823.01.410.70.4
20-39 m2/ha8.70.93.70.617.71.121.90.928.61.616.40.5
40-59 m2/ha5.00.71.90.414.41.012.20.713.61.29.60.4
from 60 m2/ha0.60.20.70.26.40.75.50.54.10.73.70.2
total17.11.29.00.849.21.553.91.169.31.640.40.6
totalto 19 m2/ha24.11.233.71.126.91.236.21.039.21.632.40.5
20-39 m2/ha48.21.540.21.433.01.435.21.138.71.738.40.6
40-59 m2/ha23.01.320.51.126.51.319.60.816.91.321.30.5
from 60 m2/ha4.80.75.50.713.71.08.90.65.20.88.00.3
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #861305/327636
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