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NFI3
number of forest plots
altitudinal vegetation zone · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: protection forest perimeter SilvaProtect: accessible forest (including shrub forest)
grid: terrestrial grid NFI3
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
altitudinal vegetation zonearea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
upper subalpineno gap0.0.0.0.0.0.2.20.72.30.71.70.51.10.2
small gap0.0.0.60.30.50.45.61.14.71.02.10.52.30.3
medium gap0.0.0.30.20.20.23.80.92.90.82.10.51.60.2
large gap0.0.0.20.20.0.4.10.96.31.12.10.52.10.3
very large gap0.0.0.0.0.0.0.20.20.0.0.10.10.10.0
total0.0.1.10.40.70.416.01.716.31.78.11.07.10.5
lower subalpineno gap0.60.54.70.83.70.95.11.04.71.05.20.84.30.4
small gap0.60.47.81.14.01.011.61.59.81.44.60.86.60.4
medium gap0.0.6.51.03.90.912.11.57.91.33.30.75.70.4
large gap0.0.9.21.14.61.011.21.514.31.64.30.87.50.5
very large gap0.0.1.60.51.20.50.20.21.50.60.30.20.80.2
total1.30.629.81.717.41.840.12.338.32.317.71.424.90.8
upper montaneno gap8.81.512.91.315.21.78.21.34.71.011.51.210.50.6
small gap1.90.810.31.26.91.26.01.15.21.07.21.06.80.5
medium gap1.80.78.21.17.91.34.91.010.61.44.40.86.40.4
large gap2.20.88.01.18.61.45.31.19.51.47.00.97.00.5
very large gap0.0.1.90.51.20.50.20.21.50.60.80.31.00.2
total14.61.941.41.939.72.324.72.031.62.230.91.631.70.8
lower montaneno gap23.32.311.51.214.91.74.20.93.10.88.11.010.10.5
small gap10.31.73.90.84.41.02.60.72.60.73.50.74.20.4
medium gap5.21.22.00.63.60.91.10.51.70.61.40.42.20.3
large gap4.21.13.20.76.51.22.20.72.70.83.20.73.50.3
very large gap0.30.30.30.21.00.50.20.20.20.20.10.10.30.1
total43.22.721.01.530.42.210.31.410.31.416.41.420.40.7
colline/submontaneno gap26.42.44.10.88.81.44.30.91.10.518.21.310.10.5
small gap5.71.30.80.40.90.53.00.81.10.53.80.72.40.3
medium gap4.51.11.20.40.70.40.90.40.40.32.20.61.50.2
large gap4.31.10.60.31.30.60.90.40.70.42.80.61.70.2
very large gap0.0.0.0.0.20.20.0.0.20.20.10.10.10.1
total40.92.76.71.011.91.59.01.33.40.827.01.515.80.6
totalno gap59.02.733.31.942.52.424.02.016.01.744.81.836.00.9
small gap18.52.123.51.716.71.828.82.123.42.021.11.522.20.8
medium gap11.51.818.21.516.21.822.72.023.62.013.31.317.50.7
large gap10.71.721.21.620.92.023.62.033.52.219.31.521.80.8
very large gap0.30.33.80.83.70.90.90.53.50.91.50.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887250/353582
NFI3
number of forest plots
altitudinal vegetation zone · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: protection forest perimeter SilvaProtect: forest
grid: terrestrial grid NFI3
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
altitudinal vegetation zonearea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
upper subalpinen/a0.0.0.0.0.0.0.90.40.60.40.90.30.40.1
no gap0.0.0.0.0.0.2.20.72.20.71.60.51.00.2
small gap0.0.0.60.30.50.35.41.14.61.02.00.52.20.3
medium gap0.0.0.30.20.20.23.70.92.80.72.00.51.50.2
large gap0.0.0.20.20.0.3.90.96.11.12.00.52.00.2
very large gap0.0.0.0.0.0.0.20.20.0.0.10.10.10.0
total0.0.1.10.40.70.416.31.716.31.78.51.07.30.5
lower subalpinen/a0.0.0.90.41.60.61.50.61.00.51.70.51.20.2
no gap0.60.44.60.83.40.94.91.04.60.94.90.84.10.4
small gap0.60.47.61.03.70.911.21.59.51.34.30.76.30.4
medium gap0.0.6.30.93.60.911.71.57.61.23.10.65.50.4
large gap0.0.9.01.14.21.010.81.413.81.64.10.77.20.5
very large gap0.0.1.60.51.10.50.20.21.50.60.30.20.80.2
total1.30.629.91.717.71.840.32.237.92.218.41.425.10.7
upper montanen/a0.0.1.40.52.60.80.70.41.60.61.20.41.30.2
no gap8.71.512.61.314.01.67.91.34.51.010.91.110.10.5
small gap1.90.810.11.26.41.15.81.15.01.06.80.96.50.4
medium gap1.80.78.01.17.31.24.71.010.21.44.10.76.20.4
large gap2.20.87.81.08.01.35.21.09.21.36.60.96.80.4
very large gap0.0.1.80.51.10.50.20.21.50.60.80.31.00.2
total14.61.941.61.939.42.224.52.032.12.130.31.631.70.8
lower montanen/a0.30.30.20.22.40.70.20.20.40.30.50.30.60.1
no gap23.12.311.21.213.81.64.00.93.00.87.71.09.70.5
small gap10.21.73.80.84.00.92.50.72.50.73.30.74.00.4
medium gap5.11.21.90.63.30.91.10.51.70.61.30.42.20.3
large gap4.21.13.10.76.01.12.10.62.60.73.00.63.40.3
very large gap0.30.30.30.20.90.50.20.20.20.20.10.10.30.1
total43.22.720.61.530.52.110.21.310.41.416.01.320.20.7
colline/submontanen/a0.30.30.30.20.70.40.0.0.0.1.30.40.50.1
no gap26.22.44.00.88.11.34.10.91.00.417.11.39.70.5
small gap5.71.30.80.40.90.42.90.81.00.43.50.72.30.3
medium gap4.51.11.10.40.60.30.80.40.40.32.00.51.50.2
large gap4.21.10.60.31.20.50.80.40.60.42.60.61.60.2
very large gap0.0.0.0.0.20.20.0.0.20.20.10.10.10.1
total40.92.76.81.011.71.58.71.33.30.826.81.415.70.6
totaln/a0.60.42.80.67.31.23.30.83.70.95.70.84.10.4
no gap58.72.732.31.839.42.323.22.015.41.642.21.834.60.8
small gap18.42.122.91.615.51.727.82.122.61.919.91.521.30.7
medium gap11.41.717.71.515.01.722.01.922.71.912.51.216.80.7
large gap10.61.720.71.619.41.922.92.032.22.118.21.420.90.7
very large gap0.30.33.70.73.40.90.90.53.40.81.50.42.30.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887251/353583
NFI3
number of forest plots
altitudinal vegetation zone · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: protection forest perimeter SilvaProtect: forest
grid: terrestrial grid NFI3
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
altitudinal vegetation zonearea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
upper subalpinen/a..0.0.0.0.5.42.63.82.210.83.96.11.6
no gap..0.0.0.0.13.33.913.73.818.54.814.32.3
small gap..56.218.867.227.033.35.528.05.123.05.229.73.0
medium gap..29.817.532.827.022.54.817.24.223.05.221.22.7
large gap..14.013.00.0.24.25.037.35.423.15.227.83.0
very large gap..0.0.0.0.1.31.30.0.1.51.50.90.6
total..100.0.100.0.100.0.100.0.100.0.100.0.
lower subalpinen/a0.0.3.01.28.93.23.71.42.71.29.22.44.80.8
no gap50.925.015.22.619.34.512.22.412.02.426.93.716.41.3
small gap49.125.025.43.121.14.627.73.325.03.223.53.625.21.5
medium gap0.0.21.22.920.34.529.03.320.13.016.83.121.81.5
large gap0.0.30.03.324.04.826.83.336.33.622.13.528.61.6
very large gap0.0.5.21.66.42.80.60.63.91.41.41.03.20.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
upper montanen/a0.0.3.31.16.71.92.71.55.11.83.91.34.10.6
no gap59.87.130.22.835.73.632.44.414.22.835.93.231.71.5
small gap12.74.924.22.616.22.823.74.015.72.922.42.720.41.3
medium gap12.44.719.12.418.52.919.23.731.93.813.52.319.41.3
large gap15.05.218.82.420.23.021.13.828.53.721.62.721.31.3
very large gap0.0.4.31.22.81.20.90.94.61.72.61.13.10.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
lower montanen/a0.70.70.80.87.82.42.22.14.12.93.31.63.10.7
no gap53.44.254.54.445.34.339.87.129.26.448.14.648.02.0
small gap23.73.518.63.413.22.924.76.323.76.020.73.719.81.6
medium gap11.82.79.52.610.92.710.44.416.05.28.22.510.71.2
large gap9.72.515.13.219.73.520.65.825.06.218.83.616.71.5
very large gap0.70.71.61.13.11.52.32.32.12.00.80.81.60.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
colline/submontanen/a0.70.74.83.36.13.40.0.0.0.5.01.53.40.8
no gap64.04.158.27.569.36.447.47.930.811.563.93.461.62.2
small gap13.93.011.64.97.43.633.27.530.811.613.22.414.81.6
medium gap11.02.716.45.75.22.99.74.613.08.57.61.99.41.3
large gap10.32.69.04.310.14.39.74.719.110.09.72.110.21.4
very large gap0.0.0.0.1.91.90.0.6.36.10.50.50.60.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.60.42.80.67.31.23.30.83.70.95.70.84.10.4
no gap58.72.732.31.839.42.323.22.015.41.642.21.834.60.8
small gap18.42.122.91.615.51.727.82.122.61.919.91.521.30.7
medium gap11.41.717.71.515.01.722.01.922.71.912.51.216.80.7
large gap10.61.720.71.619.41.922.92.032.22.118.21.420.90.7
very large gap0.30.33.70.73.40.90.90.53.40.81.50.42.30.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887252/353584
NFI3
number of forest plots
altitudinal vegetation zone · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: protection forest perimeter SilvaProtect: accessible forest (including shrub forest)
grid: terrestrial grid NFI3
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
altitudinal vegetation zonearea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
upper subalpineno gap....0.0.13.72.820.75.315.32.5
small gap....74.022.232.63.825.85.731.63.2
medium gap....26.022.221.23.325.85.822.62.8
large gap....0.0.31.83.825.95.829.63.1
very large gap....0.0.0.70.71.71.70.90.7
total....100.0.100.0.100.0.100.0.
lower subalpineno gap50.425.0..18.63.413.31.529.64.017.21.4
small gap49.625.0..25.93.826.62.025.93.926.51.6
medium gap0.0...22.43.624.31.918.53.422.91.5
large gap0.0...26.73.832.72.124.43.830.11.7
very large gap0.0...6.42.23.10.81.61.13.40.7
total100.0...100.0.100.0.100.0.100.0.
upper montaneno gap60.77.449.125.034.42.927.12.237.43.333.21.5
small gap11.54.825.822.123.22.519.92.023.32.821.21.3
medium gap13.85.20.0.20.82.523.82.114.12.320.11.3
large gap14.05.325.121.718.72.425.12.122.52.822.21.3
very large gap0.0.0.0.3.01.04.11.02.71.13.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.
lower montaneno gap53.35.054.87.756.53.839.53.749.74.749.72.0
small gap22.94.226.26.818.93.018.72.921.43.820.51.6
medium gap12.93.39.54.512.22.510.72.38.52.611.01.3
large gap10.93.17.24.011.22.427.63.419.43.717.11.5
very large gap0.0.2.32.21.20.93.41.40.90.81.70.5
total100.0.100.0.100.0.100.0.100.0.100.0.
colline/submontaneno gap63.86.264.85.665.66.153.45.467.33.463.72.2
small gap11.64.116.24.311.34.023.44.613.92.515.31.7
medium gap18.14.95.42.613.34.49.23.18.02.09.81.4
large gap6.43.113.74.09.83.811.73.510.22.210.51.4
very large gap0.0.0.0.0.0.2.41.60.50.50.60.4
total100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap57.93.460.84.540.11.923.81.244.81.836.20.9
small gap17.72.620.03.721.71.623.91.221.11.522.20.8
medium gap14.42.46.62.318.01.521.01.113.31.317.50.7
large gap10.02.111.83.017.31.528.21.219.31.521.80.7
very large gap0.0.0.80.82.90.73.10.51.50.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887253/353585
NFI3
number of forest plots
protection forest perimeter SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
protection forest perimeter SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
outside of perimeterno gap52.71.115.91.119.11.56.71.010.81.17.51.027.00.5
small gap13.00.710.20.98.61.17.71.18.21.03.90.79.70.4
medium gap8.80.69.30.96.61.07.61.19.71.14.90.88.10.4
large gap10.30.610.00.910.01.28.31.215.41.35.10.810.00.4
very large gap1.40.30.80.30.90.40.40.30.70.30.40.20.90.1
total86.20.746.21.645.11.930.71.944.71.821.81.555.70.6
inside perimeterno gap8.20.618.61.223.91.617.51.68.01.033.81.716.00.5
small gap2.50.312.21.08.21.119.61.612.71.216.01.39.50.4
medium gap1.50.310.31.09.31.115.41.513.31.211.11.18.00.3
large gap1.50.311.21.011.41.216.21.519.91.515.91.39.90.4
very large gap0.0.1.40.42.00.50.50.31.40.41.40.40.90.1
total13.80.753.81.654.91.969.31.955.31.878.21.544.30.6
totalno gap60.91.034.51.443.01.924.21.818.81.441.31.743.00.6
small gap15.50.822.41.316.81.527.31.920.91.519.91.419.20.5
medium gap10.30.719.61.315.91.423.01.823.01.616.11.316.10.5
large gap11.80.721.21.321.41.624.51.835.31.820.91.419.90.5
very large gap1.40.32.20.52.90.70.90.42.10.51.80.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887254/353586
NFI3
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
grid: terrestrial grid NFI3
state2004/06
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 gap43.11.764.63.156.43.049.22.558.22.011.72.017.21.620.32.011.81.816.43.114.62.77.41.010.41.17.50.926.30.5
small gap15.61.27.81.711.31.914.41.713.91.410.42.011.61.39.01.48.11.58.12.28.92.28.31.18.21.03.80.710.00.4
medium gap9.31.04.51.37.91.78.01.49.81.26.71.610.21.36.81.38.51.58.62.23.31.37.21.010.01.14.60.77.90.3
large gap10.61.010.51.910.41.912.31.69.11.28.81.99.51.210.51.510.41.714.12.88.12.08.61.115.11.25.20.710.00.4
very large gap0.70.30.80.63.81.22.30.73.30.71.80.91.60.51.90.70.30.31.41.00.50.50.60.31.20.40.40.21.40.1
total79.31.488.32.189.81.986.21.794.30.939.43.150.02.148.62.439.12.748.64.135.43.632.11.844.91.721.41.455.70.5
inside perimeterno gap0.70.30.0.0.0.0.30.30.0.0.40.40.80.40.70.42.70.94.71.73.61.31.70.51.10.42.90.61.20.1
small gap0.60.30.0.0.0.0.0.0.0.0.30.30.0.0.0.0.90.52.11.20.50.51.50.50.30.21.50.40.60.1
medium gap0.80.30.50.50.0.0.0.0.0.0.0.0.0.0.0.0.30.32.71.31.30.91.80.50.70.31.10.40.60.1
large gap0.10.10.0.0.0.0.0.0.0.0.0.0.70.40.0.1.20.62.91.43.51.40.80.30.50.21.60.40.60.1
very large gap0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.30.30.70.70.70.70.0.0.10.10.20.20.10.0
total2.20.50.50.50.0.0.30.30.0.0.70.51.50.50.70.45.31.213.02.89.72.35.80.92.70.67.30.93.20.2
outside perimeterno gap11.21.17.21.64.41.28.41.44.10.821.12.616.61.624.72.115.52.013.72.716.62.714.71.46.60.930.11.514.30.4
small gap3.10.62.10.93.11.12.10.71.20.411.82.012.51.49.21.413.11.97.32.18.02.118.01.513.01.215.91.29.40.4
medium gap2.20.51.20.71.20.71.10.50.0.12.72.29.51.38.11.49.41.64.61.711.02.413.71.312.51.29.91.07.30.3
large gap2.10.50.80.51.50.81.70.60.50.311.32.08.81.27.31.314.61.912.22.715.82.815.11.418.41.414.31.29.20.3
very large gap0.0.0.0.0.0.0.20.20.0.3.01.11.10.41.30.62.90.90.70.73.71.40.60.31.90.51.00.31.00.1
total18.51.311.22.010.21.913.61.75.70.959.93.248.42.150.72.455.62.738.44.055.03.862.11.852.51.771.31.541.20.5
totalno gap55.01.771.82.960.83.057.92.462.31.933.22.934.62.045.82.430.02.534.83.834.83.423.81.718.11.340.51.641.80.6
small gap19.31.39.91.914.42.116.41.815.11.422.52.624.11.818.21.922.12.317.53.117.42.927.81.821.51.421.31.420.00.5
medium gap12.21.16.21.69.11.89.11.49.81.219.32.619.71.714.91.818.22.115.92.915.52.722.71.623.31.515.51.215.80.4
large gap12.81.111.32.012.02.014.01.79.51.220.22.519.11.617.81.826.22.429.13.827.33.424.41.733.91.721.11.419.90.5
very large gap0.70.30.80.63.81.22.50.73.30.74.81.42.60.73.30.93.41.02.71.35.01.61.30.43.20.61.60.42.40.2
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 #887255/353587
NFI3
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
state2004/06
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 gap43.61.863.53.358.13.251.82.659.82.114.42.419.21.822.52.217.42.124.13.523.63.210.61.218.71.313.51.229.40.5
small gap15.11.38.11.89.51.912.31.813.31.49.72.011.41.49.61.68.01.66.72.06.72.07.31.17.20.93.40.69.20.4
medium gap9.51.15.01.58.11.88.01.410.21.37.41.910.31.46.91.38.81.67.92.23.71.47.11.08.61.04.50.77.80.3
large gap10.41.111.02.110.32.013.01.88.71.29.22.010.11.310.11.69.01.611.12.67.11.98.11.114.61.24.80.79.70.4
very large gap0.30.20.90.63.71.21.30.62.30.61.10.80.90.41.10.60.30.31.31.00.0.0.30.20.60.30.30.20.90.1
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 gap0.70.30.0.0.0.0.30.30.0.0.0.0.40.30.80.53.01.04.71.73.61.31.60.50.90.33.00.61.20.1
small gap0.50.30.0.0.0.0.0.0.0.0.40.40.0.0.0.0.90.51.20.90.50.51.50.50.30.20.80.30.50.1
medium gap0.90.30.60.60.0.0.0.0.0.0.0.0.0.0.0.0.40.43.21.41.30.91.90.60.70.31.10.40.70.1
large gap0.10.10.0.0.0.0.0.0.0.0.0.0.40.30.0.1.00.62.71.33.41.41.00.40.50.21.40.40.60.1
very large gap0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.30.30.0.0.80.80.0.0.10.10.20.20.10.0
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 gap11.71.17.01.74.21.38.61.54.00.821.82.816.91.725.22.214.32.015.52.914.22.515.01.47.10.930.91.614.70.4
small gap2.80.62.21.03.41.21.90.71.10.410.82.012.11.57.71.410.91.85.81.97.52.017.41.511.01.113.31.28.60.4
medium gap2.10.51.30.70.90.61.10.50.0.13.12.49.31.38.71.59.21.64.51.79.52.212.81.311.21.18.91.07.00.3
large gap2.30.50.40.41.70.91.70.70.50.39.62.08.81.36.11.314.22.010.52.514.62.714.71.417.41.313.01.18.90.4
very large gap0.0.0.0.0.0.0.0.0.0.2.61.20.20.21.20.62.30.80.60.63.61.40.50.31.10.41.00.30.80.1
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 gap56.11.870.53.162.33.160.72.663.82.036.23.136.62.148.62.634.72.744.44.041.43.627.31.826.61.547.31.745.30.6
small gap18.41.410.42.012.92.214.21.914.41.521.02.723.51.917.32.019.82.313.72.814.62.726.21.818.51.417.51.318.20.5
medium gap12.41.26.81.78.91.99.11.510.21.320.42.819.51.815.61.918.32.215.62.914.52.621.81.720.51.414.41.215.50.5
large gap12.81.211.42.112.12.114.71.99.21.218.72.619.21.716.21.924.22.524.33.525.13.323.91.732.51.619.21.319.30.5
very large gap0.30.20.90.63.71.21.30.62.30.63.71.41.20.52.40.82.90.92.01.24.41.50.90.41.90.51.50.41.70.2
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 #887256/353588
NFI3
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
state2004/06
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 gap43.41.863.53.358.43.251.32.659.92.014.62.419.21.822.42.217.02.124.93.523.63.210.71.218.81.313.51.129.30.5
small gap15.21.38.11.89.41.913.01.813.41.49.62.011.41.49.41.58.11.66.52.07.12.07.51.17.20.93.60.69.30.4
medium gap9.51.15.01.58.01.88.11.510.21.37.21.810.11.36.71.38.51.68.32.23.61.37.41.18.71.04.50.77.80.3
large gap10.51.111.02.110.21.912.81.88.71.29.52.010.01.310.11.610.01.711.52.66.91.98.11.114.41.24.90.79.80.4
very large gap0.30.20.90.63.71.21.30.62.30.61.00.70.90.41.10.60.30.31.30.90.0.0.30.20.80.30.40.20.90.1
total78.81.488.52.189.62.086.61.894.51.041.93.451.72.249.82.643.92.852.44.041.23.633.91.849.91.726.81.457.10.5
inside perimeterno gap0.70.30.0.0.0.0.30.30.0.0.0.0.40.30.80.52.90.94.61.73.51.31.60.51.00.32.90.61.20.1
small gap0.50.30.0.0.0.0.0.0.0.0.40.40.0.0.0.0.90.51.20.80.50.51.50.50.20.20.90.30.50.1
medium gap0.90.30.60.60.0.0.0.0.0.0.0.0.0.0.0.0.30.33.11.41.20.91.90.50.70.31.10.40.70.1
large gap0.10.10.0.0.0.0.0.0.0.0.0.0.40.30.0.1.00.62.61.33.31.31.00.40.50.21.40.40.60.1
very large gap0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.30.30.0.0.70.70.0.0.10.10.20.20.10.0
total2.20.50.60.60.0.0.30.30.0.0.40.40.80.40.80.55.41.311.62.69.32.26.01.02.50.56.50.83.10.2
outside perimeterno gap11.61.17.01.74.51.38.51.53.90.821.42.717.01.725.62.214.62.015.12.814.52.514.91.47.20.930.71.514.70.4
small gap3.00.62.21.03.41.21.90.71.10.411.02.012.11.48.11.410.91.85.61.87.32.017.31.511.01.113.31.18.60.3
medium gap2.00.51.30.70.80.61.10.50.0.13.42.49.51.38.51.59.21.64.41.69.32.212.71.311.11.18.91.07.00.3
large gap2.30.50.40.41.70.81.70.70.50.39.41.98.71.36.01.213.82.010.22.414.92.714.61.417.21.312.81.18.80.4
very large gap0.0.0.0.0.0.0.0.0.0.2.61.10.20.21.20.62.20.80.60.63.51.30.50.31.10.41.00.30.80.1
total18.91.411.02.110.42.013.11.85.51.057.73.447.52.249.42.650.72.836.03.849.53.760.11.947.61.766.71.639.80.6
totalno gap55.71.770.53.162.93.160.12.563.82.035.93.136.62.148.82.534.42.644.63.941.53.627.21.827.01.547.11.745.20.6
small gap18.71.410.42.012.72.114.91.914.51.520.92.723.61.917.52.019.92.313.32.714.92.726.21.818.41.317.81.318.40.5
medium gap12.41.26.81.78.81.89.21.510.21.320.72.819.71.815.31.918.12.215.82.914.22.622.01.720.51.414.41.215.50.5
large gap12.91.211.42.111.92.114.51.99.21.218.92.619.01.716.11.924.82.424.33.525.13.223.71.732.11.619.01.319.20.5
very large gap0.30.20.90.63.71.21.30.62.30.63.61.41.20.52.30.82.80.91.91.14.31.50.90.42.00.51.60.41.70.2
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 #887257/353589
NFI3
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: terrestrial grid NFI3
state2004/06
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 gap43.11.764.63.156.43.049.22.558.22.013.22.117.91.620.92.016.21.924.83.324.33.011.41.218.61.313.21.128.70.5
small gap15.61.27.81.711.31.914.41.713.91.410.21.911.61.38.91.48.01.46.91.98.32.08.01.07.20.93.50.69.60.4
medium gap9.31.04.51.37.91.78.01.49.81.26.51.610.11.36.71.28.01.47.31.93.31.27.01.08.90.94.20.67.60.3
large gap10.61.010.51.910.41.912.31.69.11.28.61.89.41.210.41.510.11.612.62.57.41.88.31.114.01.14.90.79.80.4
very large gap0.70.30.80.63.81.22.30.73.30.71.70.91.50.51.90.70.30.31.20.80.50.50.60.31.20.40.30.21.30.1
total79.31.488.32.189.81.986.21.794.30.940.33.150.52.148.82.442.52.652.83.743.83.435.31.750.01.626.21.457.00.5
inside perimeterno gap0.70.30.0.0.0.0.30.30.0.0.40.40.80.40.70.42.50.84.01.53.11.21.60.51.20.42.70.51.20.1
small gap0.60.30.0.0.0.0.0.0.0.0.30.30.0.0.0.0.80.51.81.00.50.51.50.50.20.21.30.40.50.1
medium gap0.80.30.50.50.0.0.0.0.0.0.0.0.0.0.0.0.30.32.91.31.10.81.70.50.70.31.00.30.60.1
large gap0.10.10.0.0.0.0.0.0.0.0.0.0.70.40.0.1.20.62.41.23.01.20.90.40.40.21.40.40.60.1
very large gap0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.60.60.60.60.0.0.10.10.20.10.10.0
total2.20.50.50.50.0.0.30.30.0.0.70.51.50.50.70.45.01.211.62.58.32.05.60.92.60.56.60.83.10.2
outside perimeterno gap11.21.17.21.64.41.28.41.44.10.820.72.616.51.624.72.114.71.913.92.614.82.413.91.36.80.830.31.514.30.4
small gap3.10.62.10.93.11.12.10.71.20.411.92.012.41.49.11.412.41.86.81.96.91.817.21.411.51.014.31.19.00.3
medium gap2.20.51.20.71.20.71.10.50.0.12.42.19.41.38.11.38.91.53.91.59.42.013.01.311.21.08.80.97.00.3
large gap2.10.50.80.51.50.81.70.60.50.311.12.08.71.27.31.313.81.810.42.313.62.414.41.316.31.212.81.18.80.3
very large gap0.0.0.0.0.0.0.20.20.0.2.91.11.00.41.30.62.70.80.60.63.21.20.60.31.60.40.90.30.90.1
total18.51.311.22.010.21.913.61.75.70.959.03.147.92.150.52.452.52.635.63.647.93.559.11.847.41.667.11.539.90.5
totalno gap55.01.771.82.960.83.057.92.462.31.934.22.935.12.046.32.433.32.542.73.742.23.426.91.726.61.446.21.644.20.6
small gap19.31.39.91.914.42.116.41.815.11.422.42.624.01.818.01.921.22.215.52.715.72.626.61.718.91.319.11.319.20.5
medium gap12.21.16.21.69.11.89.11.49.81.218.92.519.51.714.81.717.22.014.12.613.82.421.71.620.81.314.01.115.10.4
large gap12.81.111.32.012.02.014.01.79.51.219.72.518.91.617.61.825.12.325.43.324.13.023.61.630.81.519.21.319.20.5
very large gap0.70.30.80.63.81.22.50.73.30.74.71.42.60.73.20.93.20.92.31.14.31.41.20.42.90.61.50.42.30.2
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.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887258/353590
NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
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/an/a0.40.20.50.51.30.70.60.40.0.1.30.71.70.60.90.54.51.16.01.81.90.92.70.61.50.44.30.71.90.2
no gap43.41.863.23.357.43.251.22.659.82.114.52.318.61.722.02.116.42.021.43.221.22.910.31.218.01.312.51.128.30.5
small gap15.01.38.11.89.41.912.21.713.31.49.52.011.01.49.41.57.51.55.91.86.01.87.01.06.90.93.10.68.90.4
medium gap9.41.14.91.58.01.88.21.510.21.37.21.89.91.36.71.38.31.57.01.93.31.26.81.08.31.04.10.67.50.3
large gap10.31.110.92.110.22.012.91.88.71.28.92.09.81.39.81.58.51.59.92.36.41.77.71.114.01.24.50.79.40.4
very large gap0.30.20.90.63.71.21.30.62.30.61.00.70.90.41.10.50.30.31.20.80.0.0.30.20.60.30.20.20.90.1
total78.81.488.52.189.91.986.31.894.41.042.33.451.92.249.82.645.42.751.33.838.73.434.81.849.41.728.81.456.80.5
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.41.22.81.20.30.20.20.20.30.20.30.1
no gap0.70.30.0.0.0.0.30.30.0.0.0.0.40.30.80.52.80.94.21.63.21.21.50.50.80.32.70.51.20.1
small gap0.50.30.0.0.0.0.0.0.0.0.40.40.0.0.0.0.90.51.10.80.50.51.40.50.20.20.90.30.50.1
medium gap0.90.30.60.60.0.0.0.0.0.0.0.0.0.0.0.0.30.32.91.31.10.81.80.50.70.31.00.30.70.1
large gap0.10.10.0.0.0.0.0.0.0.0.0.0.40.30.0.1.00.62.41.23.01.21.00.40.50.21.30.40.60.1
very large gap0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.30.30.0.0.70.70.0.0.10.10.20.10.10.0
total2.20.50.60.60.0.0.30.30.0.0.40.40.80.40.80.55.21.213.02.611.32.36.00.92.60.56.30.83.30.2
outside perimetern/a0.10.10.0.0.0.0.30.30.0.0.40.41.20.51.10.61.50.72.91.35.11.71.40.51.60.43.40.61.40.1
no gap11.61.17.01.74.11.38.51.54.00.821.22.716.61.725.12.213.51.913.82.612.82.314.31.46.90.928.31.514.20.4
small gap2.80.62.21.03.41.21.90.71.10.410.62.011.71.47.51.310.21.75.11.76.71.816.61.510.61.112.21.18.30.3
medium gap2.10.51.30.70.80.61.10.50.0.13.32.39.11.38.51.48.61.54.01.58.62.012.21.310.91.18.20.96.80.3
large gap2.30.50.40.41.70.81.70.70.50.39.31.98.51.26.01.213.41.99.32.213.62.514.01.416.81.311.81.08.60.3
very large gap0.0.0.0.0.0.0.0.0.0.2.51.10.20.21.20.62.10.80.60.63.21.20.50.31.10.40.90.30.70.1
total18.91.410.92.110.11.913.41.85.61.057.33.447.32.249.42.649.42.835.73.650.03.659.11.948.01.764.91.539.90.5
totaln/a0.50.30.50.51.30.70.80.50.0.1.60.82.90.72.00.86.01.311.32.59.82.24.40.83.40.68.00.93.60.2
no gap55.81.870.23.161.53.160.02.663.82.035.73.135.62.147.92.532.72.639.43.737.13.326.21.725.71.543.51.643.70.6
small gap18.31.410.32.012.82.214.11.814.41.520.42.622.71.816.91.918.62.212.12.513.12.525.01.717.81.316.21.217.60.5
medium gap12.41.26.81.78.81.99.21.510.21.320.52.819.11.815.21.917.22.113.82.613.02.420.81.619.91.413.31.115.00.4
large gap12.71.211.32.111.92.114.51.99.21.218.22.618.61.715.81.922.82.321.63.223.03.022.81.731.31.617.61.218.50.5
very large gap0.30.20.90.63.71.21.30.62.30.63.61.31.10.52.30.82.70.91.81.03.91.40.80.41.80.51.40.41.70.2
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 #887259/353591
NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2004/06
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/an/a0.40.20.50.51.30.70.60.40.0.1.30.71.90.60.90.54.91.25.81.81.80.93.00.71.50.44.60.72.00.2
no gap43.21.863.23.357.73.250.92.659.92.014.32.318.61.721.82.115.82.022.13.221.32.910.21.218.21.312.41.128.20.5
small gap15.11.38.11.89.21.812.91.813.41.49.42.011.01.49.21.57.51.55.81.86.41.87.11.07.00.93.30.68.90.4
medium gap9.41.14.91.57.91.78.11.410.21.37.11.89.81.36.61.38.01.57.42.03.31.27.01.08.41.04.10.67.50.3
large gap10.41.110.92.110.01.912.71.78.71.29.32.09.71.39.91.59.31.610.22.36.31.77.71.113.91.24.40.79.40.4
very large gap0.30.20.90.63.61.21.30.62.30.61.00.70.90.41.10.50.30.31.20.80.0.0.30.20.70.30.30.20.90.1
total78.81.488.52.189.71.986.41.894.51.042.53.451.92.249.42.545.82.752.53.739.13.435.21.849.71.729.11.456.90.5
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.31.22.71.20.30.20.20.20.30.20.30.1
no gap0.70.30.0.0.0.0.30.30.0.0.0.0.40.30.80.52.70.94.11.53.21.21.50.50.90.32.70.51.20.1
small gap0.50.30.0.0.0.0.0.0.0.0.40.40.0.0.0.0.90.51.10.80.50.51.40.50.20.20.80.30.50.1
medium gap0.90.30.60.60.0.0.0.0.0.0.0.0.0.0.0.0.30.32.81.21.10.81.80.50.70.31.00.30.70.1
large gap0.10.10.0.0.0.0.0.0.0.0.0.0.40.30.0.0.90.52.31.13.01.21.00.40.40.21.20.40.60.1
very large gap0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.30.30.0.0.70.70.0.0.10.10.20.10.10.0
total2.20.50.60.60.0.0.30.30.0.0.40.40.80.40.80.55.01.212.62.611.12.36.00.92.70.66.30.83.20.2
outside perimetern/a0.10.10.0.0.0.0.30.30.0.0.40.41.30.51.70.72.00.82.91.35.11.71.70.51.60.43.60.61.50.2
no gap11.51.17.01.74.41.38.41.43.90.821.02.716.41.624.92.213.61.913.42.513.12.314.21.46.90.828.11.414.10.4
small gap3.00.62.21.03.31.21.90.71.10.410.82.011.81.47.91.410.11.75.01.66.61.816.41.510.61.012.21.18.30.3
medium gap2.00.51.30.70.80.61.10.50.0.13.22.39.21.38.31.48.61.53.91.58.42.012.11.310.81.18.10.96.70.3
large gap2.30.50.40.41.70.81.70.70.50.39.21.98.41.25.81.212.91.89.12.213.42.513.91.316.71.311.71.08.50.3
very large gap0.0.0.0.0.0.0.0.0.0.2.51.10.20.21.20.62.00.70.60.63.21.20.50.31.10.40.90.30.70.1
total18.91.410.92.110.31.913.31.85.51.057.23.447.32.249.82.649.22.734.93.649.83.658.81.947.61.764.61.539.80.5
totaln/a0.50.30.50.51.30.70.80.50.0.1.60.83.30.82.50.86.91.411.02.49.62.25.00.93.40.68.50.93.80.2
no gap55.41.770.23.162.13.159.62.563.82.035.43.035.42.147.62.532.02.539.73.737.63.325.91.726.11.543.11.643.50.6
small gap18.61.410.32.012.62.114.81.914.51.520.62.622.81.817.01.918.52.111.92.413.42.524.91.717.81.316.31.217.70.5
medium gap12.31.26.81.78.71.89.11.510.21.320.32.819.01.714.91.816.82.014.12.612.82.420.91.619.81.413.21.114.90.4
large gap12.81.211.32.111.72.114.41.89.21.218.62.618.41.715.71.823.12.321.63.122.73.022.51.631.01.617.41.218.50.5
very large gap0.30.20.90.63.61.21.30.62.30.63.51.31.10.52.30.82.60.81.71.03.91.40.80.41.90.51.50.41.70.2
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 #887260/353592
NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: forest
grid: terrestrial grid NFI3
state2004/06
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/an/a0.50.20.40.41.50.80.50.40.0.1.90.92.10.61.00.55.31.15.71.71.60.82.90.61.40.44.70.62.10.2
no gap42.91.764.33.155.53.048.82.458.22.012.92.117.21.620.31.914.91.822.23.022.02.810.91.118.01.212.11.027.60.5
small gap15.51.27.81.711.11.914.31.713.91.49.91.911.21.38.71.47.41.36.21.77.51.87.61.07.00.83.20.59.30.3
medium gap9.21.04.51.37.81.67.91.39.81.26.41.69.71.26.61.27.41.36.61.73.01.16.60.98.60.93.80.67.30.3
large gap10.61.010.51.910.31.912.21.69.11.28.41.89.11.210.11.49.31.511.22.36.71.67.91.013.61.14.50.69.40.3
very large gap0.70.30.80.53.71.12.30.73.30.71.70.91.50.51.90.70.20.21.10.70.40.40.60.31.10.30.30.21.30.1
total79.31.388.32.090.01.886.01.794.30.941.33.150.92.148.52.444.52.553.03.541.23.236.41.749.81.628.61.356.90.5
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.21.12.91.20.30.20.20.10.30.20.20.1
no gap0.70.30.0.0.0.0.30.30.0.0.40.40.80.40.70.42.30.83.61.32.81.01.50.41.20.32.50.51.20.1
small gap0.60.30.0.0.0.0.0.0.0.0.30.30.0.0.0.0.80.41.60.90.40.41.40.40.20.21.20.30.50.1
medium gap0.80.30.50.50.0.0.0.0.0.0.0.0.0.0.0.0.30.32.61.11.00.71.60.50.60.30.90.30.60.1
large gap0.10.10.0.0.0.0.0.0.0.0.0.0.70.40.0.1.10.52.21.12.71.10.80.30.40.21.30.30.60.1
very large gap0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.50.50.60.60.0.0.10.10.20.10.10.0
total2.10.50.50.50.0.0.30.30.0.0.70.51.50.50.70.44.71.112.62.410.42.15.60.92.70.56.30.73.20.2
outside perimetern/a0.10.10.0.0.0.0.30.30.0.0.30.31.40.51.70.62.20.72.51.15.01.61.80.51.70.43.80.61.50.1
no gap11.11.17.21.64.31.28.31.44.10.820.22.515.91.524.12.013.61.712.52.313.42.213.21.36.60.827.71.413.70.4
small gap3.10.62.10.93.01.12.00.71.20.411.61.911.91.38.91.311.51.66.11.76.21.616.31.411.11.013.01.08.70.3
medium gap2.20.51.20.71.20.71.10.50.0.12.12.19.11.27.81.38.21.43.51.38.51.912.31.210.81.08.10.86.70.3
large gap2.10.50.80.51.50.81.70.60.50.310.91.98.41.27.11.212.81.79.32.112.32.213.71.315.81.211.71.08.40.3
very large gap0.0.0.0.0.0.0.20.20.0.2.91.11.00.41.30.62.50.80.50.52.91.10.60.31.60.40.90.30.90.1
total18.51.311.22.010.01.813.71.75.70.958.03.147.62.150.82.450.82.534.43.448.43.358.01.847.51.665.01.439.90.5
totaln/a0.60.30.40.41.50.80.80.40.0.2.30.93.40.82.70.87.51.310.42.29.52.05.00.83.30.68.80.93.90.2
no gap54.71.771.52.959.93.057.52.462.31.933.52.833.91.945.12.330.82.338.33.438.23.225.61.625.71.442.21.542.50.5
small gap19.21.39.91.914.22.116.31.815.11.421.92.523.21.717.61.819.62.013.82.414.22.425.31.618.31.217.41.218.40.5
medium gap12.21.16.21.69.01.89.11.49.81.218.52.518.81.614.41.715.91.912.72.312.52.220.61.520.11.312.81.014.50.4
large gap12.71.111.32.011.82.013.91.79.51.219.32.418.21.617.11.823.22.222.73.021.82.822.41.629.81.517.51.218.40.4
very large gap0.70.30.80.53.71.12.50.73.30.74.61.42.50.63.10.83.00.82.11.03.91.31.20.42.80.51.30.42.30.2
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.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887261/353593
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
NFI4
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: 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/an/a0.40.20.50.51.30.70.80.50.0.1.70.91.70.60.60.43.91.15.41.71.90.92.80.71.30.43.90.61.80.2
no gap29.41.645.13.435.53.128.42.333.62.010.82.19.91.313.11.811.81.813.12.69.52.04.80.86.80.97.30.916.70.4
small gap29.11.628.73.130.83.032.72.539.32.111.52.116.91.718.92.012.11.812.42.610.42.28.91.114.61.26.40.818.80.5
medium gap10.31.16.71.78.01.813.01.89.61.39.42.111.01.46.41.37.21.56.41.99.32.17.41.010.41.15.30.78.60.4
large gap9.01.06.61.611.62.09.51.511.11.39.02.011.71.39.71.510.51.713.42.67.61.910.81.215.71.35.80.810.20.4
very large gap0.70.31.00.72.81.01.90.70.80.40.0.0.80.41.20.60.0.0.60.60.0.0.20.20.60.30.10.10.70.1
total78.81.488.52.189.91.986.31.894.41.042.33.451.92.249.82.645.42.751.33.838.73.434.81.849.41.728.81.456.80.5
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.81.12.31.10.30.20.0.0.30.20.20.1
no gap0.50.20.0.0.0.0.0.0.0.0.0.0.20.20.20.23.31.03.01.31.30.80.90.40.50.22.00.50.80.1
small gap0.50.30.0.0.0.0.30.30.0.0.0.0.20.20.20.20.70.52.81.23.41.41.50.50.60.31.90.40.80.1
medium gap1.00.40.60.60.0.0.0.0.0.0.40.40.20.20.30.30.60.41.81.13.01.21.30.40.80.30.90.30.70.1
large gap0.20.20.0.0.0.0.0.0.0.0.0.0.20.20.0.0.60.42.91.31.40.81.90.50.60.31.30.40.60.1
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
total2.20.50.60.60.0.0.30.30.0.0.40.40.80.40.80.55.21.213.02.611.32.36.00.92.60.56.30.83.30.2
outside perimetern/a0.10.10.0.0.0.0.0.0.0.1.00.71.20.51.60.70.80.52.41.24.11.50.90.41.60.43.00.61.20.1
no gap7.61.06.11.63.31.25.11.12.30.613.82.310.31.415.31.910.71.78.22.111.72.38.71.16.40.820.31.39.80.4
small gap7.40.92.21.06.41.66.01.32.20.617.12.518.81.718.01.916.72.111.12.414.52.520.31.611.91.121.01.313.20.4
medium gap2.40.52.21.00.0.0.30.30.40.314.82.47.41.26.21.39.41.68.12.15.61.711.51.310.11.08.90.96.60.3
large gap1.40.40.40.40.40.41.60.70.70.310.22.19.11.37.71.410.41.76.01.813.22.416.51.516.71.311.31.08.50.3
very large gap0.0.0.0.0.0.0.30.30.0.0.40.40.60.30.60.41.20.60.0.0.90.71.10.41.40.40.40.20.60.1
total18.91.410.92.110.11.913.41.85.61.057.33.447.32.249.42.649.42.835.73.650.03.659.11.948.01.764.91.539.90.5
totaln/a0.50.30.50.51.30.70.80.50.0.2.71.12.90.72.20.84.71.29.62.38.22.04.10.82.90.67.20.83.20.2
no gap37.41.751.23.438.83.133.62.436.02.024.72.920.41.828.62.325.82.424.33.322.52.914.41.413.61.229.61.527.30.5
small gap37.01.730.93.137.23.139.02.641.52.128.63.035.82.137.12.529.42.526.33.428.33.330.71.827.11.529.31.532.90.6
medium gap13.71.29.42.08.01.813.21.810.01.324.53.018.51.712.91.817.32.116.32.917.92.820.11.621.31.415.01.215.90.5
large gap10.71.17.01.711.92.011.11.711.81.319.22.721.01.717.31.921.52.322.33.222.22.929.31.832.91.618.41.219.40.5
very large gap0.70.31.00.72.81.02.20.80.80.40.40.41.30.51.80.71.20.61.20.80.90.71.40.52.10.50.50.21.30.1
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 #887263/353595
NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
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/ano gap48.21.656.61.518.41.210.10.77.71.128.00.6
small gap13.51.112.41.010.10.96.90.63.10.79.40.4
medium gap8.20.99.10.98.60.97.20.62.80.77.50.4
large gap10.01.010.30.99.50.99.70.72.40.69.00.4
very large gap0.40.22.40.41.10.30.30.10.40.20.90.1
total80.41.390.70.947.61.634.21.216.31.554.90.6
inside perimeterno gap0.60.20.10.10.50.22.30.43.60.81.40.2
small gap0.40.20.0.0.10.11.00.21.10.40.50.1
medium gap0.80.30.0.0.0.1.30.31.50.50.70.1
large gap0.10.10.0.0.20.11.20.31.60.50.60.1
very large gap0.0.0.0.0.0.0.10.10.0.0.00.0
total1.90.40.10.10.80.36.00.67.81.13.20.2
outside perimeterno gap11.01.05.60.721.21.313.50.835.71.915.50.5
small gap2.80.51.90.410.81.014.20.914.91.49.00.4
medium gap2.00.40.50.210.01.012.50.89.31.27.20.3
large gap1.90.41.20.38.50.918.11.014.91.49.40.4
very large gap0.0.0.0.1.00.31.50.31.10.40.80.1
total17.61.29.20.951.61.659.81.275.81.741.90.6
totalno gap59.81.662.31.440.11.525.91.147.02.044.80.6
small gap16.71.214.21.021.01.322.11.019.11.618.90.5
medium gap11.01.09.70.918.61.221.01.013.61.415.50.5
large gap12.01.011.50.918.21.229.01.118.81.519.00.5
very large gap0.40.22.40.42.20.52.00.31.50.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887264/353596
NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
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/ano gap48.11.656.91.418.61.210.50.77.51.027.00.5
small gap13.61.112.31.010.70.97.80.63.60.79.70.4
medium gap8.40.99.10.88.60.98.30.64.90.88.10.4
large gap10.31.010.30.910.00.911.40.75.10.89.90.4
very large gap0.40.22.30.41.10.30.50.20.30.20.90.1
total80.91.290.90.848.91.538.41.121.31.555.60.6
inside perimeterno gap0.60.20.10.10.50.22.10.33.20.61.30.1
small gap0.40.20.0.0.10.10.90.20.90.40.50.1
medium gap0.80.30.0.0.0.1.30.31.20.40.70.1
large gap0.10.10.0.0.20.11.20.21.60.50.60.1
very large gap0.0.0.0.0.0.0.20.10.30.20.10.0
total1.90.40.10.10.80.35.60.57.20.93.20.2
outside perimeterno gap10.71.05.50.721.01.212.40.831.01.714.80.4
small gap2.70.51.80.410.50.913.40.814.91.39.00.4
medium gap1.90.40.50.29.80.911.70.79.91.17.30.3
large gap1.90.41.10.38.10.816.90.914.41.39.30.4
very large gap0.0.0.0.1.00.31.50.31.20.40.80.1
total17.31.29.00.850.41.555.91.171.41.641.20.6
totalno gap59.41.562.51.440.11.524.91.041.71.743.10.6
small gap16.71.214.21.021.21.222.11.019.41.419.10.5
medium gap11.11.09.60.918.31.221.30.916.11.316.10.5
large gap12.41.011.40.918.31.229.51.121.11.519.90.5
very large gap0.40.22.30.42.00.42.10.31.70.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887265/353597
NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub 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/ano gap47.91.656.91.418.61.210.60.77.51.027.00.5
small gap13.71.112.51.010.60.97.90.63.90.79.70.4
medium gap8.50.99.00.88.40.88.40.64.90.88.10.4
large gap10.41.010.20.910.10.911.50.75.10.810.00.4
very large gap0.40.22.30.41.10.30.50.20.40.20.90.1
total80.91.290.90.848.71.539.01.121.81.555.70.6
inside perimeterno gap0.60.20.10.10.50.22.10.33.10.61.30.1
small gap0.40.20.0.0.10.10.90.21.00.40.50.1
medium gap0.80.30.0.0.0.1.30.31.20.40.70.1
large gap0.10.10.0.0.20.11.20.21.50.40.60.1
very large gap0.0.0.0.0.0.0.20.10.30.20.10.0
total1.90.40.10.10.70.35.60.57.20.93.20.2
outside perimeterno gap10.61.05.50.721.01.212.40.730.71.614.80.4
small gap2.90.51.80.410.70.913.30.814.91.39.00.4
medium gap1.90.40.50.29.90.911.60.79.91.17.30.3
large gap1.90.41.10.38.00.816.70.914.31.29.20.4
very large gap0.0.0.0.1.00.31.40.31.10.40.80.1
total17.31.29.00.850.51.555.41.171.01.641.10.6
totalno gap59.11.562.51.440.11.425.11.041.31.743.00.6
small gap16.91.214.31.021.31.222.00.919.91.419.30.5
medium gap11.11.09.60.918.31.221.40.916.11.316.10.5
large gap12.41.011.30.918.31.229.41.020.91.419.80.5
very large gap0.40.22.30.42.00.42.10.31.80.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887266/353598
NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/ano gap47.81.555.01.417.11.110.40.77.50.926.30.5
small gap13.91.013.61.010.60.98.20.63.80.710.10.4
medium gap8.20.88.80.88.30.88.30.64.60.77.90.3
large gap10.50.910.20.89.80.811.70.75.20.710.00.4
very large gap0.80.33.10.51.70.40.90.20.40.21.40.1
total81.21.290.70.847.41.439.41.021.41.455.60.5
inside perimeterno gap0.50.20.10.10.70.22.00.32.90.61.30.1
small gap0.50.20.0.0.10.10.90.21.50.40.60.1
medium gap0.70.30.0.0.0.1.20.21.10.40.60.1
large gap0.10.10.0.0.30.21.10.21.60.40.60.1
very large gap0.0.0.0.0.0.0.20.10.20.20.10.0
total1.80.40.10.11.10.35.30.57.30.93.20.2
outside perimeterno gap10.40.95.60.620.41.111.90.730.11.514.40.4
small gap2.90.51.90.411.30.913.80.715.91.29.40.4
medium gap2.00.40.60.29.50.811.70.79.91.07.20.3
large gap1.80.41.10.38.80.816.10.814.31.29.20.3
very large gap0.0.0.10.11.50.41.70.31.00.31.00.1
total17.01.19.20.851.51.455.21.171.31.541.20.5
totalno gap58.71.560.71.338.21.324.30.940.51.641.90.6
small gap17.21.115.51.022.01.222.90.921.31.420.10.5
medium gap10.90.99.40.817.81.121.10.915.51.215.80.4
large gap12.41.011.30.918.91.128.91.021.11.419.80.5
very large gap0.80.33.10.53.20.52.80.41.60.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887267/353599
NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest NFI3/NFI4
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/ano gap48.11.657.01.419.31.216.90.813.51.229.30.5
small gap13.61.112.31.010.60.97.20.63.40.69.30.4
medium gap8.40.99.00.88.50.87.70.64.50.77.80.3
large gap10.31.010.30.910.00.910.90.74.80.79.70.4
very large gap0.40.22.30.41.10.30.50.20.30.20.90.1
total80.91.290.90.849.31.543.21.126.41.456.90.6
inside perimeterno gap0.60.20.10.10.50.21.90.33.00.61.30.1
small gap0.40.20.0.0.10.10.80.20.80.30.50.1
medium gap0.80.30.0.0.0.1.30.21.10.40.70.1
large gap0.10.10.0.0.20.11.10.21.40.40.60.1
very large gap0.0.0.0.0.0.0.10.10.20.20.10.0
total1.90.40.10.10.70.35.30.56.50.83.10.2
outside perimeterno gap10.71.05.50.720.81.211.80.730.91.614.70.4
small gap2.70.51.80.410.50.912.20.713.31.28.60.4
medium gap1.90.40.50.29.60.910.70.78.91.07.00.3
large gap1.90.41.10.38.00.815.40.813.01.18.90.4
very large gap0.0.0.0.1.00.31.30.31.00.30.80.1
total17.31.29.00.849.91.551.51.167.11.640.00.6
totalno gap59.41.562.51.440.61.530.71.047.31.745.30.6
small gap16.71.214.11.021.11.220.30.917.51.318.30.5
medium gap11.11.09.60.918.11.219.60.914.41.215.40.5
large gap12.41.011.40.918.21.227.41.019.21.319.20.5
very large gap0.40.22.30.42.00.42.00.31.50.41.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887268/353600
NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest
grid: terrestrial grid NFI3
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/ano gap47.81.555.01.417.81.117.10.813.21.128.60.5
small gap13.91.013.61.010.60.97.60.53.50.69.70.4
medium gap8.20.88.80.88.20.87.60.54.20.67.60.3
large gap10.50.910.20.89.60.811.10.64.90.79.70.4
very large gap0.80.33.10.51.70.40.80.20.30.21.30.1
total81.21.290.70.847.91.444.11.026.21.456.90.5
inside perimeterno gap0.50.20.10.10.70.21.90.32.70.51.20.1
small gap0.50.20.0.0.10.10.80.21.30.40.50.1
medium gap0.70.30.0.0.0.1.10.21.00.30.60.1
large gap0.10.10.0.0.30.21.00.21.40.40.60.1
very large gap0.0.0.0.0.0.0.20.10.20.10.10.0
total1.80.40.10.11.10.35.00.46.60.83.10.2
outside perimeterno gap10.40.95.60.620.21.111.40.730.31.514.40.4
small gap2.90.51.90.411.20.912.60.714.31.19.00.3
medium gap2.00.40.60.29.40.810.60.68.80.96.90.3
large gap1.80.41.10.38.70.814.70.712.81.18.80.3
very large gap0.0.0.10.11.50.31.60.30.90.30.90.1
total17.01.19.20.851.01.450.91.067.11.540.00.5
totalno gap58.71.560.71.338.71.330.40.946.21.644.20.6
small gap17.21.115.51.021.91.220.90.819.11.319.20.5
medium gap10.90.99.40.817.61.119.30.814.01.115.10.4
large gap12.41.011.30.918.61.126.80.919.21.319.10.5
very large gap0.80.33.10.53.20.52.60.31.50.42.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887269/353601
NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible 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/ano gap47.91.656.91.419.21.217.00.813.51.129.20.5
small gap13.71.112.51.010.50.97.30.63.60.69.30.4
medium gap8.50.99.00.88.30.87.80.64.50.77.80.3
large gap10.41.010.20.910.00.911.00.74.90.79.70.4
very large gap0.40.22.30.41.00.30.50.20.40.20.90.1
total80.91.290.90.849.11.543.61.126.81.457.00.5
inside perimeterno gap0.60.20.10.10.50.21.90.32.90.61.30.1
small gap0.40.20.0.0.10.10.80.20.90.30.50.1
medium gap0.80.30.0.0.0.1.20.21.10.40.70.1
large gap0.10.10.0.0.20.11.10.21.40.40.60.1
very large gap0.0.0.0.0.0.0.10.10.20.20.10.0
total1.90.40.10.10.70.35.20.56.50.83.10.2
outside perimeterno gap10.61.05.50.720.91.211.90.730.71.514.70.4
small gap2.90.51.80.410.60.912.10.713.31.18.60.3
medium gap1.90.40.50.29.80.910.60.78.91.06.90.3
large gap1.90.41.10.37.90.815.20.812.81.18.80.3
very large gap0.0.0.0.0.90.31.30.21.00.30.80.1
total17.31.29.00.850.11.551.11.166.71.639.90.6
totalno gap59.11.562.51.440.61.430.81.047.11.745.20.6
small gap16.91.214.31.021.31.220.20.917.81.318.50.5
medium gap11.11.09.60.918.11.219.60.914.41.215.40.5
large gap12.41.011.30.918.11.127.31.019.01.319.20.5
very large gap0.40.22.30.42.00.42.00.31.60.41.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887270/353602
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
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 NFI3/NFI4
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/a0.40.20.40.21.40.42.70.34.30.71.90.2
no gap47.81.656.61.418.81.216.00.812.51.128.20.5
small gap13.51.112.21.010.30.96.80.53.10.68.90.4
medium gap8.40.99.10.88.20.87.30.64.10.67.50.3
large gap10.31.010.20.99.70.910.30.74.50.79.30.4
very large gap0.40.22.30.41.00.30.50.10.20.20.90.1
total80.91.290.90.849.41.543.61.028.81.456.80.5
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 gap0.40.20.0.0.10.10.80.20.90.30.50.1
medium gap0.80.30.0.0.0.1.20.21.00.30.70.1
large gap0.10.10.0.0.20.11.10.21.30.40.60.1
very large gap0.0.0.0.0.0.0.10.10.20.10.10.0
total1.90.40.10.10.70.35.60.56.30.83.30.2
outside perimetern/a0.10.10.10.11.00.31.90.33.40.61.40.1
no gap10.71.05.40.720.51.211.20.728.31.514.20.4
small gap2.70.51.80.410.10.911.60.712.21.18.30.3
medium gap1.90.40.50.29.50.910.20.68.20.96.70.3
large gap1.90.41.10.37.80.814.60.811.81.08.60.3
very large gap0.0.0.0.0.90.31.30.20.90.30.70.1
total17.31.29.00.849.91.550.81.064.91.540.00.5
totaln/a0.50.20.50.22.40.55.20.58.00.93.60.2
no gap59.11.562.21.439.81.429.11.043.51.643.70.6
small gap16.61.214.11.020.51.219.20.816.21.217.70.5
medium gap11.11.09.60.917.71.218.60.813.31.114.90.4
large gap12.31.011.30.917.61.126.00.917.61.218.50.5
very large gap0.40.22.30.42.00.41.90.31.40.41.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887272/353604
NFI4
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/an/a0.40.20.50.21.40.42.50.33.90.61.80.2
no gap32.81.532.61.411.11.07.80.67.30.916.70.4
small gap28.91.435.21.416.41.111.90.76.40.818.70.5
medium gap9.50.910.20.99.10.98.60.65.30.78.60.4
large gap8.60.910.70.910.60.912.50.75.80.810.20.4
very large gap0.70.31.60.40.70.30.30.10.10.10.70.1
total80.91.290.90.849.41.543.61.028.81.456.80.5
inside perimetern/a0.0.0.0.0.0.0.40.10.30.20.20.1
no gap0.40.20.0.0.20.11.30.22.00.50.80.1
small gap0.40.20.10.10.20.11.30.21.90.40.80.1
medium gap0.90.30.0.0.30.21.20.20.90.30.70.1
large gap0.20.10.0.0.10.11.20.21.30.40.70.1
very large gap0.0.0.0.0.0.0.10.10.0.0.00.0
total1.90.40.10.10.70.35.60.56.30.83.30.2
outside perimetern/a0.10.10.0.1.30.31.60.33.00.61.20.1
no gap7.30.83.50.512.71.08.30.620.31.39.80.4
small gap6.30.84.30.618.11.115.30.821.01.313.20.4
medium gap2.40.50.30.28.40.89.90.68.90.96.60.3
large gap1.20.30.90.38.80.814.70.811.31.08.60.3
very large gap0.0.0.10.10.50.21.10.20.40.20.60.1
total17.31.29.00.849.91.550.81.064.91.540.00.5
totaln/a0.50.20.50.22.70.54.50.47.20.83.20.2
no gap40.51.536.11.424.01.317.40.829.61.527.30.5
small gap35.61.539.61.434.71.428.51.029.31.532.80.6
medium gap12.71.110.50.917.71.119.60.915.01.215.90.5
large gap10.00.911.60.919.61.128.41.018.41.219.50.5
very large gap0.70.31.70.41.30.31.60.30.50.21.30.1
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887273/353605
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