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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 NFI3/NFI4
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 gap61.31.134.62.242.22.922.03.124.22.435.03.748.70.8
small gap14.90.822.21.919.12.325.23.318.42.216.72.917.30.7
medium gap10.10.720.51.914.62.123.73.321.62.323.13.314.50.6
large gap12.00.720.91.922.02.427.93.534.62.723.73.317.80.7
very large gap1.70.31.80.62.10.81.20.91.30.61.30.91.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap61.810.131.34.637.65.622.93.815.33.727.55.428.02.0
small gap12.66.823.64.217.44.425.44.019.94.129.15.522.61.9
medium gap8.65.813.63.416.24.324.73.929.64.723.25.121.01.9
large gap17.17.826.54.424.75.127.04.034.14.818.84.726.32.0
very large gap0.0.5.02.24.12.30.0.1.11.11.41.42.10.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap59.23.035.52.344.82.926.22.613.21.945.62.137.71.0
small gap18.32.422.32.014.12.129.62.724.12.419.01.721.10.9
medium gap11.82.020.01.917.62.321.32.422.42.413.01.517.40.8
large gap10.71.920.11.919.92.421.82.537.42.820.51.721.70.9
very large gap0.0.2.10.73.61.11.10.63.01.01.90.62.00.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap61.11.034.71.542.81.924.21.818.31.441.71.743.10.6
small gap15.30.822.41.316.71.527.41.921.01.519.41.419.10.5
medium gap10.30.719.61.316.11.422.71.723.01.616.11.316.10.5
large gap11.90.721.11.321.41.624.71.835.71.821.11.519.90.5
very large gap1.50.32.20.53.00.70.90.42.00.51.70.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887375/353707
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