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NFI3
number of forest plots
rockfall 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
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/an/a0.40.20.40.21.40.42.90.44.60.72.00.2
no gap47.61.656.61.418.71.216.10.812.41.128.10.5
small gap13.61.112.51.010.30.96.90.53.30.69.00.4
medium gap8.40.99.00.88.10.87.40.64.10.67.50.3
large gap10.41.010.10.99.70.910.40.64.40.79.40.4
very large gap0.40.22.30.41.00.30.50.20.30.20.90.1
total80.91.290.90.849.21.544.11.029.11.456.90.5
inside perimetern/a0.0.0.0.0.0.0.60.20.30.20.20.1
no gap0.60.20.10.10.50.21.80.32.70.51.20.1
small gap0.40.20.0.0.10.10.80.20.80.30.50.1
medium gap0.80.30.0.0.0.1.20.21.00.30.70.1
large gap0.10.10.0.0.20.11.00.21.20.40.60.1
very large gap0.0.0.0.0.0.0.10.10.20.10.10.0
total1.80.40.10.10.70.35.50.56.30.83.20.2
outside perimetern/a0.10.10.10.11.30.32.10.33.60.61.50.2
no gap10.61.05.50.720.31.211.20.728.11.414.20.4
small gap2.90.51.80.410.30.911.50.712.21.18.30.3
medium gap1.90.40.50.29.50.910.00.68.10.96.70.3
large gap1.90.41.10.37.70.814.40.711.71.08.50.3
very large gap0.0.0.0.0.90.31.20.20.90.30.70.1
total17.31.29.00.850.01.550.41.064.61.539.90.5
totaln/a0.50.20.50.22.70.55.50.58.50.93.80.2
no gap58.81.562.21.439.51.429.11.043.11.643.50.6
small gap16.91.214.31.020.71.219.10.816.31.217.80.5
medium gap11.11.09.50.917.61.118.60.813.21.114.80.4
large gap12.41.011.20.917.61.125.80.917.41.218.40.5
very large gap0.40.22.30.41.90.41.90.31.50.41.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887271/353603
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