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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 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 gap53.21.117.61.223.21.610.61.218.71.313.51.229.50.5
small gap12.90.710.20.98.11.07.31.17.20.93.40.69.30.4
medium gap8.80.69.20.96.30.97.11.08.61.04.50.77.80.3
large gap10.40.79.60.99.51.18.11.114.61.24.80.79.70.4
very large gap1.50.30.80.30.90.40.30.20.60.30.30.20.90.1
total86.70.747.41.647.91.933.51.849.71.726.41.457.10.6
inside perimeterno gap0.70.23.10.54.30.84.50.82.00.52.40.52.30.2
small gap0.10.12.30.51.90.55.20.92.30.52.30.51.80.2
medium gap0.10.11.30.41.70.54.90.93.60.71.80.51.70.2
large gap0.20.12.60.52.60.65.60.94.00.71.50.42.10.2
very large gap0.0.0.50.20.40.20.0.0.10.10.10.10.20.1
total1.10.29.80.910.91.220.21.612.11.18.10.98.00.3
outside perimeterno gap7.30.615.11.118.51.412.11.35.90.831.41.613.50.4
small gap2.20.39.60.95.80.913.71.49.01.011.81.17.30.3
medium gap1.40.38.60.97.31.09.91.28.31.08.10.96.00.3
large gap1.30.28.60.98.11.010.11.213.91.212.91.17.50.3
very large gap0.0.0.90.31.50.50.50.31.10.41.10.40.70.1
total12.20.742.81.541.21.946.32.038.21.765.41.634.90.6
totalno gap61.11.035.91.546.01.927.31.826.61.547.31.745.30.6
small gap15.30.822.11.315.81.426.21.818.51.417.51.318.30.5
medium gap10.30.719.11.215.21.421.81.720.51.414.41.215.40.5
large gap11.90.720.71.320.21.523.91.732.51.619.21.319.20.5
very large gap1.50.32.20.52.80.60.90.41.90.51.50.41.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887332/353664
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