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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 gap53.11.115.91.219.01.56.61.010.71.27.51.027.20.5
small gap12.90.710.21.08.61.17.61.18.21.03.60.79.70.4
medium gap8.80.69.40.96.61.07.11.19.61.14.90.88.10.4
large gap10.40.79.60.99.91.28.41.215.41.35.10.89.90.4
very large gap1.50.30.80.30.90.40.40.30.60.30.30.20.90.1
total86.60.746.01.645.02.030.11.944.51.821.31.555.80.6
inside perimeterno gap0.70.23.20.64.30.84.80.92.00.52.50.62.30.2
small gap0.10.12.40.52.00.55.30.92.60.62.60.61.90.2
medium gap0.10.11.40.41.90.55.10.93.90.72.10.51.70.2
large gap0.20.12.70.52.80.75.60.94.50.81.70.52.20.2
very large gap0.0.0.50.20.50.30.0.0.10.10.10.10.20.1
total1.10.210.10.911.41.320.81.613.31.39.01.08.30.3
outside perimeterno gap7.30.615.61.119.51.512.81.45.60.831.81.713.60.4
small gap2.20.39.80.96.10.914.51.510.21.113.21.27.60.3
medium gap1.40.38.80.97.71.010.41.39.51.19.11.06.30.3
large gap1.30.28.80.98.71.110.71.315.81.414.31.37.80.3
very large gap0.0.0.90.31.60.50.60.31.30.41.30.40.70.1
total12.20.743.91.643.51.949.02.142.21.869.71.635.90.6
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 #887329/353661
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