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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 NFI1/NFI2/NFI3/NFI4
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/ha20.41.230.51.113.31.012.00.86.41.017.00.5
20-39 m2/ha38.71.636.71.415.31.112.10.87.01.022.10.5
40-59 m2/ha17.81.218.91.112.11.06.90.62.40.611.90.4
from 60 m2/ha3.50.64.70.66.90.83.20.40.50.34.00.3
total80.41.390.70.947.61.634.21.216.31.554.90.6
inside perimeterto 19 m2/ha0.40.20.10.10.10.11.80.32.00.60.90.1
20-39 m2/ha1.00.30.0.0.40.22.00.33.60.81.30.2
40-59 m2/ha0.40.20.0.0.30.21.40.31.70.50.70.1
from 60 m2/ha0.10.10.0.0.0.0.90.20.60.30.30.1
total1.90.40.10.10.80.36.00.67.81.13.20.2
outside perimeterto 19 m2/ha2.80.52.70.510.71.014.60.920.11.69.90.4
20-39 m2/ha9.10.93.70.618.91.224.81.133.91.917.50.5
40-59 m2/ha5.10.72.00.415.41.114.30.816.71.510.60.4
from 60 m2/ha0.60.20.70.36.50.86.20.65.20.94.00.3
total17.61.29.20.951.61.659.81.275.81.741.90.6
totalto 19 m2/ha23.61.233.31.224.11.228.31.028.41.727.70.5
20-39 m2/ha48.81.640.41.434.71.538.81.244.52.040.80.7
40-59 m2/ha23.41.320.91.227.91.322.61.020.81.623.20.6
from 60 m2/ha4.30.75.40.713.41.010.20.76.31.08.30.4
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #861303/327634
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