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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 without shrub 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 gap37.52.051.23.640.03.333.02.635.62.126.04.919.32.526.73.325.24.022.85.318.25.213.32.612.01.829.53.630.30.8
small gap37.12.032.53.434.83.338.42.841.62.228.84.933.32.937.53.629.64.325.95.627.66.627.33.427.42.522.93.334.20.8
medium gap13.11.47.61.99.12.015.32.110.21.322.84.822.22.613.32.620.23.814.34.531.36.822.43.222.82.419.03.115.50.6
large gap11.51.37.51.813.02.311.11.811.81.422.34.723.72.520.13.025.04.035.26.122.96.236.43.736.52.728.13.518.80.7
very large gap0.90.41.10.83.11.12.20.90.80.40.0.1.50.82.41.20.0.1.81.80.0.0.60.61.30.60.60.61.30.2
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...0.0.29.624.030.326.063.411.729.911.315.38.316.66.220.79.334.16.528.23.3
small gap22.59.90.0...100.0...0.0.23.220.630.326.012.58.222.69.939.312.324.57.222.09.731.06.326.23.2
medium gap44.811.8100.0...0.0...100.0.22.720.339.429.212.18.012.78.429.011.322.67.036.411.114.74.823.53.1
large gap10.97.30.0...0.0...0.0.24.521.40.0.12.07.929.311.216.58.833.67.915.68.320.15.420.52.9
very large gap0.0.0.0...0.0...0.0.0.0.0.0.0.0.5.65.40.0.2.72.75.35.20.0.1.50.9
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 gap40.24.155.610.032.99.639.27.141.88.924.83.822.12.832.23.521.83.323.66.023.64.614.81.812.81.732.22.024.90.9
small gap39.24.020.48.163.29.943.87.239.38.829.84.141.13.338.13.634.83.833.16.732.85.134.62.525.42.233.72.034.21.0
medium gap12.82.820.18.10.0.2.12.06.54.526.44.016.12.413.02.519.03.227.36.311.73.520.12.122.22.114.81.517.30.8
large gap7.72.23.93.83.83.812.54.812.45.918.23.519.52.515.62.721.83.316.05.229.84.828.62.336.52.518.61.722.20.8
very large gap0.0.0.0.0.0.2.52.40.0.0.80.81.30.71.20.92.61.30.0.2.11.52.00.73.00.90.70.41.50.3
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 gap37.61.751.43.439.33.233.72.536.02.025.23.020.71.929.42.425.62.524.03.821.03.214.51.512.71.231.71.728.00.6
small gap37.21.731.03.137.73.239.32.641.52.129.33.136.92.137.72.631.42.728.34.031.83.831.81.926.21.631.21.733.90.6
medium gap13.81.39.52.08.11.813.41.810.01.325.33.119.31.813.41.819.12.319.23.519.83.320.91.722.81.615.71.316.50.5
large gap10.81.17.11.712.12.111.31.711.81.319.82.821.71.717.72.022.52.526.93.926.13.531.21.936.01.820.71.420.30.5
very large gap0.70.31.00.72.81.02.20.80.80.40.50.51.40.51.80.71.40.71.61.11.20.91.60.52.30.60.60.31.40.2
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.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887306/353638
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