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NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap61.21.134.42.242.22.821.93.124.22.434.53.648.50.8
small gap15.10.822.11.919.02.325.13.318.22.117.72.917.40.7
medium gap10.10.720.01.914.62.024.73.321.72.322.63.214.50.6
large gap11.90.721.71.922.22.427.13.434.42.623.23.217.90.7
very large gap1.70.31.70.62.00.81.20.81.60.71.91.11.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap61.810.132.04.637.65.622.93.817.13.826.75.328.32.0
small gap12.66.823.44.217.44.425.44.019.54.031.25.522.81.9
medium gap8.65.813.53.416.24.324.73.929.04.622.55.020.81.8
large gap17.17.826.34.424.75.127.04.033.44.818.24.626.02.0
very large gap0.0.4.92.14.12.30.0.1.11.11.41.42.10.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap58.93.035.22.345.12.926.22.613.61.945.42.137.71.0
small gap18.92.422.52.014.42.129.62.724.12.419.11.721.30.9
medium gap11.62.020.51.917.22.221.32.422.52.413.21.517.50.8
large gap10.51.919.71.919.82.421.82.536.92.820.51.721.50.9
very large gap0.0.2.10.73.51.11.10.63.01.01.80.62.00.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap60.91.034.51.443.01.924.21.818.81.441.31.743.00.6
small gap15.50.822.41.316.81.527.31.920.91.519.91.419.20.5
medium gap10.30.719.61.315.91.423.01.823.01.616.11.316.10.5
large gap11.80.721.21.321.41.624.51.835.31.820.91.419.90.5
very large gap1.40.32.20.52.90.70.90.42.10.51.80.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887376/353708
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