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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 gap53.01.115.91.119.11.56.71.010.81.17.51.027.10.5
small gap13.10.710.20.98.61.17.71.18.21.03.90.79.70.4
medium gap8.80.69.30.96.61.07.61.19.71.14.90.88.10.4
large gap10.30.610.00.910.01.28.31.215.41.35.10.810.00.4
very large gap1.40.30.80.30.90.40.40.30.70.30.40.20.90.1
total86.60.746.21.645.11.930.71.944.71.821.81.555.90.6
inside perimeterno gap0.70.23.20.54.20.84.70.92.30.52.40.52.30.2
small gap0.10.12.30.52.00.55.20.92.60.62.80.61.90.2
medium gap0.10.11.30.41.80.55.10.93.90.72.00.51.70.2
large gap0.20.12.60.52.80.65.60.94.40.81.60.52.10.2
very large gap0.0.0.50.20.50.30.0.0.10.10.10.10.20.1
total1.10.210.00.911.21.220.71.613.31.29.01.08.20.3
outside perimeterno gap7.20.615.41.119.71.512.71.45.70.831.41.613.50.4
small gap2.30.39.90.96.30.914.41.510.11.113.21.27.60.3
medium gap1.40.39.00.97.51.010.31.39.41.19.11.06.30.3
large gap1.30.28.60.98.71.110.61.315.51.314.21.27.70.3
very large gap0.0.0.90.31.50.50.50.31.20.41.30.40.70.1
total12.30.743.81.643.71.948.62.142.01.869.21.635.90.6
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 #887331/353663
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