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NFI4
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: accessible forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/ano gap29.51.645.33.435.93.128.82.433.62.011.12.210.21.413.51.811.91.814.12.910.62.25.00.97.10.97.90.917.30.5
small gap29.21.628.83.131.23.033.02.539.32.111.82.217.41.719.12.112.91.914.02.911.62.59.31.215.01.36.50.819.50.5
medium gap10.31.16.71.78.11.813.11.89.61.39.62.111.31.46.61.37.71.57.22.110.42.47.71.110.81.15.70.89.00.4
large gap9.11.06.61.611.72.09.61.611.11.39.22.012.11.49.91.611.11.815.12.98.52.111.41.316.21.36.20.810.60.4
very large gap0.70.31.00.72.81.01.90.70.80.40.0.0.80.41.20.60.0.0.70.70.0.0.20.20.60.30.10.10.70.1
total78.81.488.52.189.82.086.41.894.41.041.83.451.92.250.22.643.62.851.14.041.03.733.51.849.71.726.41.457.00.5
inside perimeterno gap0.50.20.0.0.0.0.0.0.0.0.0.0.20.20.30.33.51.03.41.51.50.81.00.40.50.22.20.50.90.1
small gap0.50.30.0.0.0.0.30.30.0.0.0.0.20.20.30.30.70.53.21.43.71.51.60.50.50.32.00.50.80.1
medium gap1.00.40.60.60.0.0.0.0.0.0.40.40.20.20.30.30.70.51.41.02.81.21.30.50.80.30.90.30.70.1
large gap0.20.20.0.0.0.0.0.0.0.0.0.0.20.20.0.0.70.53.31.51.60.92.00.60.50.21.40.40.70.1
very large gap0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.60.60.0.0.20.20.10.10.0.0.00.0
total2.30.50.60.60.0.0.30.30.0.0.40.40.80.40.80.55.61.311.92.79.52.26.01.02.40.56.50.83.10.2
outside perimeterno gap7.61.06.11.63.41.25.21.22.30.614.22.410.41.415.61.911.11.88.62.311.72.48.91.16.50.922.01.410.00.4
small gap7.40.92.21.06.41.65.81.22.20.617.62.619.41.818.52.017.72.212.52.716.22.821.11.612.21.122.71.413.70.4
medium gap2.40.62.21.00.0.0.30.30.40.315.22.57.61.26.31.39.71.79.22.45.81.812.11.310.51.19.61.06.80.3
large gap1.40.40.40.40.40.41.70.70.70.310.52.19.21.37.91.411.11.86.72.114.72.617.21.517.31.312.31.18.80.4
very large gap0.0.0.0.0.0.0.30.30.0.0.40.40.60.40.60.41.30.70.0.1.10.71.20.41.40.40.50.20.60.1
total18.91.411.02.110.22.013.31.85.61.057.93.447.32.249.02.650.92.837.03.949.53.860.51.947.91.767.11.639.90.6
totalno gap37.61.751.43.439.33.234.02.536.02.025.42.920.91.929.42.426.52.526.13.623.83.114.91.414.01.232.11.628.20.6
small gap37.21.731.03.137.73.239.22.641.52.129.43.137.12.137.82.531.32.729.63.831.53.532.01.927.71.631.21.634.00.6
medium gap13.81.39.52.08.11.813.41.810.01.325.23.019.11.813.21.818.12.217.83.118.93.021.11.722.11.516.21.316.50.5
large gap10.81.17.11.712.12.111.21.711.81.319.72.721.51.717.82.022.92.425.13.524.83.230.51.933.91.619.91.320.10.5
very large gap0.70.31.00.72.81.02.20.80.80.40.40.41.40.51.80.71.30.71.31.01.10.71.50.52.20.50.60.31.30.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #875939/342271
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