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NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/ano gap48.41.657.11.418.61.210.60.77.51.027.10.5
small gap13.81.112.51.010.60.97.90.63.90.79.70.4
medium gap8.50.99.00.88.40.88.40.64.90.88.10.4
large gap10.41.010.30.910.10.911.50.75.10.810.00.4
very large gap0.40.22.30.41.10.30.50.20.40.20.90.1
total81.51.291.20.848.71.539.01.121.81.555.90.6
inside perimeterno gap1.50.40.0.2.20.44.30.52.40.52.30.2
small gap0.30.20.0.1.50.43.60.42.80.61.90.2
medium gap0.20.10.0.0.60.24.00.42.00.51.70.2
large gap0.40.20.0.1.40.35.00.51.60.52.10.2
very large gap0.0.0.0.0.20.10.40.10.10.10.20.1
total2.40.50.0.5.80.717.30.99.01.08.20.3
outside perimeterno gap9.20.95.40.719.41.210.20.731.41.613.60.4
small gap2.90.51.80.49.30.910.50.713.21.27.70.3
medium gap2.50.50.50.29.20.98.90.69.11.06.30.3
large gap1.60.41.00.36.80.812.80.814.21.27.70.3
very large gap0.0.0.0.0.80.31.20.31.30.40.70.1
total16.21.18.80.845.51.543.71.169.21.635.90.6
totalno gap59.11.562.51.440.11.425.11.041.31.743.00.6
small gap16.91.214.31.021.31.222.00.919.91.419.30.5
medium gap11.11.09.60.918.31.221.40.916.11.316.10.5
large gap12.41.011.30.918.31.229.41.020.91.419.80.5
very large gap0.40.22.30.42.00.42.10.31.80.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887353/353685
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