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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
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 gap29.71.646.23.435.83.128.82.333.72.012.32.312.31.515.41.913.51.916.72.913.52.46.81.08.71.08.50.918.20.5
small gap29.31.628.33.031.13.032.82.539.22.112.02.217.11.718.92.013.61.914.12.811.32.39.71.214.91.27.10.919.40.5
medium gap10.31.16.61.78.11.813.31.89.51.29.42.110.91.46.61.37.71.56.61.910.72.37.81.110.61.15.90.88.90.4
large gap9.01.06.51.612.12.19.51.611.31.39.12.011.61.39.81.510.61.715.12.87.82.012.01.316.01.26.30.810.60.4
very large gap0.70.31.00.72.81.01.90.70.70.40.0.0.80.41.20.60.0.0.70.70.0.0.20.20.80.30.20.20.70.1
total79.01.488.62.189.92.086.21.894.51.042.83.452.82.251.92.545.42.853.33.843.33.536.31.851.01.728.01.457.80.5
inside perimeterno gap0.50.20.0.0.0.0.0.0.0.0.0.0.20.20.20.23.41.03.11.41.30.81.10.40.50.22.10.50.80.1
small gap0.50.20.0.0.0.0.30.30.0.0.0.0.20.20.20.20.70.52.91.33.51.41.50.50.60.32.00.50.80.1
medium gap1.00.40.60.60.0.0.0.0.0.0.40.40.20.20.30.30.60.51.91.13.01.31.20.40.80.30.90.30.70.1
large gap0.20.20.0.0.0.0.0.0.0.0.0.0.20.20.0.0.60.43.01.41.40.81.80.50.70.31.30.40.70.1
very large gap0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.60.60.0.0.10.10.10.10.0.0.00.0
total2.20.50.60.60.0.0.30.30.0.0.40.40.80.40.80.55.31.311.52.59.32.15.80.92.60.56.30.83.10.2
outside perimeterno gap7.60.96.01.63.31.25.21.12.30.614.02.310.51.415.11.810.91.88.52.212.02.48.61.17.00.921.51.410.00.4
small gap7.30.92.21.06.41.66.11.32.20.617.32.518.71.717.91.916.92.111.52.515.02.620.11.611.71.122.31.413.30.4
medium gap2.40.52.21.00.0.0.30.30.40.314.92.47.31.16.11.29.61.68.42.25.81.711.41.210.01.09.31.06.60.3
large gap1.40.40.40.40.40.41.60.70.70.310.32.19.41.37.61.410.61.76.82.013.62.416.51.416.31.212.01.18.60.3
very large gap0.0.0.0.0.0.0.30.30.0.0.40.40.60.30.60.41.30.60.0.1.00.71.30.41.30.40.40.20.60.1
total18.81.410.82.010.12.013.51.85.51.056.83.446.52.247.32.649.32.835.23.747.43.657.81.946.31.765.71.539.10.5
totalno gap37.91.752.23.439.13.133.92.436.02.026.33.023.01.930.72.427.82.428.33.526.93.216.41.516.21.232.11.529.00.6
small gap37.21.730.53.137.53.239.22.641.32.129.33.036.02.137.02.531.22.628.53.629.73.431.31.827.21.531.41.633.50.6
medium gap13.71.29.32.08.11.813.61.89.91.324.73.018.41.713.01.817.92.217.03.019.52.920.41.621.41.416.11.216.20.5
large gap10.61.16.91.612.52.111.21.712.01.319.32.721.21.717.41.921.92.324.93.422.93.030.31.833.01.619.71.319.90.5
very large gap0.70.31.00.72.81.02.20.80.70.40.40.41.30.51.70.71.30.61.20.91.00.71.60.52.30.50.70.31.30.1
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 #887262/353594
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