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NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: biogeographical region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap56.31.762.11.433.41.622.23.122.62.434.53.447.40.8
small gap18.11.315.01.021.21.426.73.318.12.217.62.718.10.6
medium gap10.71.19.10.818.61.322.23.122.82.421.43.014.10.6
large gap13.71.210.80.923.81.526.63.333.72.725.13.117.90.6
very large gap1.20.43.00.53.00.62.31.12.90.91.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap30.010.3100.0.47.16.127.07.334.910.740.86.139.53.4
small gap24.99.7.0.011.83.927.07.310.06.720.45.017.92.6
medium gap40.111.0.0.010.33.732.47.730.010.313.84.319.82.7
large gap5.04.9.0.026.55.413.65.720.09.022.05.220.02.8
very large gap.0.0.0.04.42.5.0.05.04.93.12.22.91.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap60.93.561.23.833.01.522.92.211.51.741.52.034.80.9
small gap16.22.617.02.922.11.329.62.426.52.422.51.723.00.8
medium gap11.72.37.92.118.31.222.62.224.52.314.31.417.60.7
large gap11.22.212.72.622.81.323.82.234.52.620.01.622.30.8
very large gap.0.01.20.93.70.61.10.52.90.91.60.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap56.71.562.11.333.71.123.01.717.41.539.91.642.00.6
small gap17.91.215.20.921.40.928.51.922.11.621.31.420.10.5
medium gap11.41.08.90.818.20.923.11.823.91.615.81.215.70.4
large gap13.11.011.00.823.31.024.01.833.71.821.31.419.80.5
very large gap0.90.32.80.43.40.41.40.53.00.71.70.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151104/137484
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