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NFI4
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/an/a0.50.20.70.33.10.78.20.815.72.14.30.3
no gap41.11.735.91.525.51.820.21.225.62.530.20.7
small gap35.61.738.51.532.01.925.91.321.32.432.00.7
medium gap11.51.111.31.017.51.618.21.217.72.214.70.6
large gap10.31.111.91.020.51.626.71.319.02.317.60.6
very large gap0.90.31.70.41.40.50.80.30.70.51.20.2
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.100.0.1.61.63.61.01.41.43.10.8
no gap52.210.40.0.37.15.914.21.812.43.918.71.7
small gap26.49.20.0.23.95.229.22.436.15.729.32.0
medium gap17.27.80.0.17.74.723.72.320.84.822.21.8
large gap4.24.10.0.16.54.626.32.329.25.424.41.9
very large gap0.0.0.0.3.22.22.90.90.0.2.40.7
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.60.60.0.2.70.73.80.65.10.93.50.4
no gap37.73.838.14.824.01.918.71.333.51.926.00.9
small gap36.03.748.25.037.52.228.91.531.81.933.01.0
medium gap17.63.02.01.416.91.717.71.312.71.415.50.8
large gap8.12.110.63.018.11.728.81.516.41.520.80.8
very large gap0.0.1.11.10.80.42.00.50.60.31.20.2
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.50.20.80.32.80.55.80.58.10.93.90.2
no gap40.81.536.01.425.51.318.70.829.51.427.90.5
small gap35.51.539.31.433.91.427.60.928.91.532.10.6
medium gap12.61.010.50.917.31.118.90.814.81.115.60.4
large gap9.80.911.80.919.21.127.50.918.11.219.20.5
very large gap0.70.31.60.41.30.31.60.30.60.21.30.1
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #876017/342349
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