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NFI4b
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: biogeographical region
unit: %
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: grid NFI4 2009-2013
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap38.62.334.91.924.82.111.53.611.52.529.64.830.31.1
small gap36.72.338.61.928.62.224.04.826.43.520.94.333.31.1
medium gap11.41.513.81.418.81.927.85.023.33.419.94.216.10.9
large gap12.61.611.11.227.52.235.45.437.43.929.64.819.40.9
very large gap0.70.41.70.50.20.21.31.31.30.9.0.01.00.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap53.813.8.0.031.84.47.33.22.42.412.35.119.52.4
small gap30.912.8.0.026.44.233.85.719.06.136.57.528.82.7
medium gap7.77.4.0.020.03.823.55.131.07.124.36.722.62.5
large gap7.77.4.0.018.23.733.95.842.97.626.96.926.62.7
very large gap.0.0.0.03.61.81.51.54.83.3.0.02.61.0
total100.0..0.0100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap39.05.035.55.523.02.018.93.311.62.832.02.725.61.3
small gap35.84.950.05.733.02.229.03.926.33.935.62.833.81.4
medium gap12.63.45.32.618.91.820.33.424.83.812.41.916.71.1
large gap12.63.49.23.324.12.029.73.934.94.219.32.322.81.2
very large gap.0.0.0.01.10.52.21.22.31.30.70.51.10.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap39.02.134.91.824.81.414.12.110.41.729.62.227.70.8
small gap36.42.139.81.830.41.528.72.725.52.432.52.333.10.8
medium gap11.51.412.91.219.01.323.12.524.92.415.21.816.80.7
large gap12.51.410.91.224.91.432.32.837.12.722.22.021.20.7
very large gap0.60.31.50.51.00.31.80.82.10.80.50.31.20.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151219/137599
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