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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 gap37.61.952.23.639.83.333.42.635.72.128.74.823.42.629.63.329.83.831.45.031.35.018.62.617.11.830.42.931.50.8
small gap37.11.931.93.334.63.338.02.741.52.128.14.632.52.836.43.529.93.826.54.826.04.926.72.929.22.225.32.833.50.8
medium gap13.01.47.41.99.02.015.42.110.11.322.14.520.72.412.82.416.93.112.43.524.74.921.32.720.81.921.02.615.40.6
large gap11.31.37.41.813.42.311.01.812.01.421.24.322.02.418.92.823.43.528.44.818.14.332.93.131.42.222.62.618.40.6
very large gap0.80.41.10.83.11.12.20.90.80.40.0.1.40.72.21.10.0.1.21.20.0.0.50.51.60.60.80.51.20.2
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.
inside perimeterno gap21.79.60.0...0.0...0.0.29.624.030.326.063.411.726.810.414.57.918.36.317.07.832.96.327.23.1
small gap22.59.90.0...100.0...0.0.23.220.630.326.012.58.225.59.837.111.826.07.122.48.831.76.226.83.2
medium gap44.811.8100.0...0.0...100.0.22.720.339.429.212.18.016.48.732.811.321.46.729.99.514.24.723.13.0
large gap10.97.30.0...0.0...0.0.24.521.40.0.12.07.926.410.215.68.431.77.626.29.221.25.421.42.9
very large gap0.0.0.0...0.0...0.0.0.0.0.0.0.0.5.04.90.0.2.52.54.44.30.0.1.50.8
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.
outside perimeterno gap40.64.055.610.032.99.638.37.041.88.924.63.822.52.832.03.522.23.324.25.725.44.614.81.815.11.832.81.925.50.9
small gap39.04.020.48.163.29.945.07.239.38.830.44.140.23.237.83.634.33.832.66.231.64.934.72.525.32.234.02.034.00.9
medium gap12.82.720.18.10.0.2.02.06.54.526.24.015.82.412.92.519.53.224.05.712.23.519.72.121.52.014.21.416.90.8
large gap7.62.23.93.83.83.812.24.712.45.918.13.520.32.516.12.721.53.319.25.228.74.728.62.335.32.418.31.622.10.8
very large gap0.0.0.0.0.0.2.42.40.0.0.80.81.20.71.20.92.61.30.0.2.11.52.20.82.90.80.70.31.50.2
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.
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 #875963/342295
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