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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
grid: terrestrial grid NFI3
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap60.01.135.52.046.92.532.43.037.22.250.43.150.40.8
small gap15.90.822.31.817.11.922.62.714.41.613.52.217.00.6
medium gap9.80.719.01.712.31.719.82.617.91.816.12.313.20.5
large gap12.00.720.61.720.92.123.52.728.12.118.92.417.10.6
very large gap2.30.32.60.72.90.91.70.82.40.71.20.72.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap62.19.530.74.237.45.320.63.416.43.425.34.827.01.9
small gap15.06.924.93.921.24.424.93.721.93.930.25.124.01.8
medium gap7.75.314.83.215.23.925.83.729.24.322.94.621.31.7
large gap15.17.024.73.922.64.627.93.830.74.320.44.425.31.8
very large gap0.0.4.92.03.62.00.80.81.81.31.21.22.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap58.22.933.92.143.82.725.52.515.81.947.32.038.01.0
small gap19.12.323.21.915.52.030.52.623.92.320.01.621.80.8
medium gap12.21.919.01.716.52.021.32.321.82.212.01.316.70.8
large gap10.21.820.41.820.52.221.72.434.42.619.21.621.00.8
very large gap0.30.33.50.83.71.01.00.64.11.11.60.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap59.81.034.31.444.61.726.91.726.61.446.21.644.20.6
small gap16.30.823.01.216.91.326.61.718.91.319.11.319.20.5
medium gap10.10.618.61.114.31.221.71.620.81.314.01.115.10.4
large gap11.80.720.91.220.91.423.61.630.81.519.21.319.10.5
very large gap2.10.33.20.53.30.61.20.42.90.61.50.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887380/353712
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