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NFI4
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/an/a0.40.20.50.21.40.42.50.33.90.61.80.2
no gap33.21.532.71.411.11.07.80.67.30.916.70.4
small gap29.11.435.31.416.41.111.90.76.40.818.80.5
medium gap9.50.910.30.99.10.98.60.65.30.78.60.4
large gap8.60.910.70.910.60.912.50.75.80.810.20.4
very large gap0.70.31.60.40.70.30.30.10.10.10.70.1
total81.51.291.10.849.41.543.61.028.81.456.90.5
inside perimetern/a0.0.0.0.0.10.10.50.20.10.10.20.1
no gap1.20.40.0.2.20.42.30.30.90.31.50.2
small gap0.60.30.0.1.40.34.70.52.70.52.40.2
medium gap0.40.20.0.1.00.33.80.41.60.41.80.2
large gap0.10.10.0.0.90.34.20.42.20.51.90.2
very large gap0.0.0.0.0.20.10.50.10.0.0.20.1
total2.40.50.0.5.80.716.10.87.50.88.00.3
outside perimetern/a0.10.10.0.1.20.31.40.33.20.61.20.1
no gap6.00.73.40.510.70.97.30.621.41.39.10.3
small gap5.80.74.30.616.91.111.80.720.21.311.70.4
medium gap2.90.50.20.17.60.87.20.68.10.95.50.3
large gap1.30.40.90.38.10.811.70.710.41.07.30.3
very large gap0.0.0.10.10.40.20.80.20.40.20.40.1
total16.11.18.90.844.91.540.31.063.71.535.10.5
totaln/a0.50.20.50.22.70.54.50.47.20.83.20.2
no gap40.51.536.11.424.01.317.40.829.61.527.30.5
small gap35.61.539.61.434.71.428.51.029.31.532.80.6
medium gap12.71.110.50.917.71.119.60.915.01.215.90.5
large gap10.00.911.60.919.61.128.41.018.41.219.50.5
very large gap0.70.31.70.41.30.31.60.30.50.21.30.1
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #875994/342326
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