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NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: canton
unit: %
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.0.0.0.0.0.4.50.91.51.53.01.55.04.75.33.03.10.80.0.2.21.10.0.4.03.90.0.2.31.30.0.0.0.2.61.90.0.19.22.714.74.61.50.68.41.80.0.0.0.3.60.3
no gap65.23.053.114.359.210.145.72.268.45.550.34.270.114.157.96.936.72.261.64.545.93.756.14.425.610.323.35.948.44.471.86.169.63.833.75.367.94.644.13.443.16.450.42.428.93.059.812.664.03.049.60.8
small gap12.62.18.17.728.29.215.31.68.03.210.92.70.0.12.44.713.51.511.32.923.93.221.43.728.511.021.25.616.63.411.44.011.82.816.84.115.83.611.52.212.84.422.12.120.12.724.111.112.32.215.70.6
medium gap7.91.88.38.16.84.716.11.68.03.212.93.00.0.7.43.616.71.713.13.29.52.312.62.912.38.124.86.115.63.39.03.94.21.715.64.16.02.513.52.311.03.912.31.619.92.711.68.212.62.213.10.6
large gap11.52.030.613.25.84.017.41.714.24.019.03.415.010.917.15.328.32.014.13.316.82.98.82.629.611.224.76.114.73.27.73.713.02.928.65.17.62.711.22.116.44.812.11.621.82.84.54.59.71.916.50.6
very large gap2.71.00.0.0.0.1.00.50.0.3.91.710.010.00.0.1.70.60.0.1.60.91.11.10.0.6.03.42.51.40.0.1.51.02.71.92.71.80.50.52.02.01.50.60.90.70.0.1.50.81.60.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a..0.0.0.0.1.41.4..0.0...5.35.23.21.60.0.0.0.0.0.0.0.11.510.83.93.9..0.0.25.713.1..0.0.0.0.6.44.43.11.50.0...3.20.8
no gap..36.729.30.0.33.45.7..34.619.7..35.310.017.13.337.321.50.0.100.0.0.0.33.315.357.111.0..100.0.28.814.0..34.16.624.19.443.29.421.63.60.0...28.02.0
small gap..36.729.3100.0.19.24.8..16.315.1..0.0.19.63.50.0.69.126.30.0.15.214.626.013.720.39.1..0.0.18.312.0..31.26.524.19.524.98.224.93.80.0...21.71.8
medium gap..0.0.0.0.17.64.6..0.0...19.18.628.64.021.318.530.926.30.0.0.0.0.0.3.93.9..0.0.7.87.6..17.15.223.89.37.85.323.33.7100.0...19.81.8
large gap..26.623.60.0.22.35.1..32.719.2..36.110.430.64.141.422.70.0.0.0.84.814.629.214.69.46.4..0.0.19.312.1..15.85.223.89.317.77.227.13.90.0...25.31.9
very large gap..0.0.0.0.6.12.9..16.315.1..4.24.10.80.80.0.0.0.0.0.0.0.0.0.5.45.2..0.0.0.0...1.91.84.24.10.0.0.0.0.0...2.00.6
total..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...100.0.100.0.100.0.100.0.100.0...100.0.
outside perimetern/a..0.0.0.0.2.00.80.0.0.0...16.66.83.70.90.0.2.72.74.94.80.0.4.83.58.42.30.0.0.0.5.02.90.0.6.61.111.75.62.51.83.11.00.0.0.0.4.30.4
no gap..65.114.466.111.637.12.657.311.641.35.8..24.67.618.91.955.16.836.98.174.110.162.814.130.17.542.93.950.036.155.513.245.56.364.613.348.02.238.08.443.45.425.42.534.612.976.215.037.01.0
small gap..16.311.15.65.622.12.216.58.821.04.9..18.67.021.52.024.35.916.36.116.28.712.48.326.56.914.92.950.036.114.79.69.33.720.611.016.81.78.64.818.34.328.72.620.311.013.712.720.10.8
medium gap..9.28.622.510.315.01.921.69.720.24.9..5.74.019.71.916.85.132.77.80.0.15.310.422.86.916.33.10.0.21.811.220.45.10.0.11.11.412.95.321.74.520.62.415.410.10.0.16.60.8
large gap..9.49.15.75.622.02.24.64.514.54.1..28.88.233.32.33.82.711.45.44.94.89.69.115.75.915.02.90.0.8.07.616.34.814.810.016.31.728.87.813.03.721.12.414.39.510.19.720.30.8
very large gap..0.0.0.0.1.80.70.0.3.02.1..5.73.93.10.80.0.0.0.0.0.0.0.0.0.2.51.20.0.0.0.3.52.40.0.1.10.50.0.1.11.11.10.615.410.10.0.1.80.3
total..100.0.100.0.100.0.100.0.100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.0.0.0.0.0.3.30.61.21.22.01.05.04.78.82.83.40.60.0.2.31.00.50.52.12.13.01.85.51.40.0.0.0.5.21.80.0.9.71.111.12.91.90.65.00.90.0.0.0.3.80.2
no gap65.23.056.39.760.47.841.51.666.25.047.03.270.114.143.14.727.01.458.93.843.73.459.74.034.68.126.94.346.32.871.26.068.43.638.13.967.54.446.01.838.24.648.92.125.91.747.59.464.43.043.50.6
small gap12.62.114.67.022.06.718.21.39.63.114.32.40.0.11.73.217.51.215.02.723.32.920.03.321.37.023.84.116.02.212.64.012.02.613.92.816.43.416.31.313.63.221.71.824.91.721.87.712.32.117.70.5
medium gap7.91.87.85.311.94.515.81.210.73.314.92.50.0.9.32.819.31.214.52.713.72.410.72.511.65.721.74.215.12.18.73.85.81.917.03.15.32.212.21.213.83.113.61.520.91.615.86.912.22.114.80.4
large gap11.52.021.38.15.63.119.51.312.33.317.92.615.010.924.64.330.61.411.62.415.72.58.02.330.48.021.54.214.42.07.53.612.52.723.03.48.52.714.91.321.53.812.51.522.51.68.54.79.71.918.50.5
very large gap2.71.00.0.0.0.1.70.40.0.3.91.410.010.02.61.52.20.50.0.1.30.81.01.00.0.3.11.82.70.90.0.1.30.92.81.42.41.61.00.41.81.31.40.50.80.46.44.61.40.81.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887370/353702
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: canton
unit: %
unit of evaluation: forest
grid: terrestrial grid NFI3
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.0.0.0.0.0.5.00.91.31.34.61.74.54.34.22.43.10.70.80.82.01.00.0.8.05.40.0.2.71.40.0.0.0.2.51.80.0.19.72.614.34.21.40.68.01.70.0.0.0.3.70.3
no gap63.72.958.013.253.09.344.52.169.25.247.64.072.813.054.96.436.32.161.34.344.23.455.84.223.39.423.95.648.84.273.95.869.93.632.35.166.64.543.53.243.16.048.12.329.82.852.612.061.32.948.60.8
small gap13.32.17.97.526.08.116.41.67.43.013.22.80.0.14.24.613.61.511.42.824.03.021.83.526.210.224.75.716.13.110.63.711.32.516.53.816.13.511.32.112.64.123.72.020.82.527.110.713.22.116.20.6
medium gap7.61.67.16.99.45.116.41.68.83.311.92.70.0.6.23.017.01.612.43.09.92.111.42.711.47.522.35.513.72.98.53.83.61.516.74.05.52.213.02.29.73.511.61.518.22.410.27.212.32.112.70.5
large gap12.02.027.011.911.65.716.21.613.33.818.63.213.69.918.95.027.51.913.43.016.02.59.02.526.210.223.85.715.73.17.03.513.52.727.34.89.42.912.12.118.74.813.11.621.62.610.27.29.51.816.50.6
very large gap3.31.10.0.0.0.1.50.50.0.4.21.79.19.11.51.52.40.70.60.63.91.32.01.34.94.95.33.03.01.50.0.1.81.04.62.32.41.60.40.41.61.62.00.71.60.80.0.3.71.12.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a..0.0.0.0.1.21.1..0.0...9.96.63.51.60.0.0.0.0.0.0.0.11.610.912.16.6..0.0.26.913.4..0.0.0.0.5.73.92.71.30.0...3.60.8
no gap..27.123.461.333.533.05.2..29.117.3..34.79.515.33.035.921.10.0.83.615.010.29.931.915.049.510.4..100.0.27.213.4..29.65.920.08.142.28.920.13.30.0...25.91.8
small gap..54.225.438.733.519.84.4..14.213.3..0.0.21.63.40.0.67.127.216.415.023.315.126.613.822.48.7..0.0.17.711.5..32.06.132.29.429.08.224.23.60.0...23.21.7
medium gap..0.0.0.0.18.64.3..14.213.3..20.78.429.73.821.818.932.927.20.0.0.0.0.0.3.53.4..0.0.8.38.0..16.44.720.58.17.14.825.13.6100.0...20.51.7
large gap..18.617.30.0.21.14.6..28.417.1..30.99.428.43.842.322.80.0.0.0.66.516.529.914.88.15.6..0.0.19.912.4..20.45.323.78.416.06.627.13.70.0...24.51.8
very large gap..0.0.0.0.6.32.7..14.213.3..3.83.71.41.00.0.0.0.0.0.0.0.0.0.4.44.3..0.0.0.0...1.71.73.63.50.0.0.70.70.0...2.20.6
total..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...100.0.100.0.100.0.100.0.100.0...100.0.
outside perimetern/a..0.0.0.0.2.50.80.0.0.0...15.26.33.60.80.0.2.52.54.64.50.0.4.23.07.42.10.0.0.0.4.22.40.0.6.91.110.95.22.31.63.51.00.0.0.0.4.30.4
no gap..53.412.965.711.736.02.456.211.140.65.4..27.57.518.61.855.56.641.27.965.710.752.413.529.87.042.83.767.227.353.912.241.45.869.611.647.42.135.98.139.95.124.62.435.513.076.115.036.30.9
small gap..12.18.45.75.621.82.114.98.021.64.6..16.76.422.41.924.85.815.45.819.18.719.010.324.46.517.02.832.827.313.18.611.03.717.89.618.41.611.45.421.54.329.52.620.811.213.612.620.90.8
medium gap..22.411.122.910.414.11.720.49.218.74.4..7.24.019.41.815.94.930.67.46.15.912.58.522.96.614.92.80.0.26.111.217.94.50.0.10.61.311.94.921.54.320.52.314.59.40.0.16.00.7
large gap..12.18.45.85.622.22.18.55.816.64.0..28.57.832.32.13.72.610.34.94.64.58.17.817.05.815.72.80.0.6.96.620.94.912.58.515.71.527.57.513.93.620.92.314.79.710.39.920.20.8
very large gap..0.0.0.0.3.50.90.0.2.51.8..4.83.43.80.90.0.0.0.0.0.8.17.81.61.62.21.10.0.0.0.4.52.50.0.1.00.42.42.31.01.01.00.614.59.40.0.2.30.3
total..100.0.100.0.100.0.100.0.100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.0.0.0.0.0.3.70.61.11.12.91.14.54.38.62.63.40.50.50.52.00.90.50.53.82.72.71.65.81.30.0.0.0.4.71.70.0.10.01.010.62.71.80.65.00.80.0.0.0.3.90.2
no gap63.72.952.48.757.07.340.31.566.64.844.83.072.813.042.74.426.51.359.03.643.23.157.93.830.87.126.94.145.92.773.65.768.53.435.93.667.04.245.11.736.64.246.42.025.61.644.28.961.82.942.50.6
small gap13.32.115.16.420.66.018.81.28.92.916.02.40.0.12.13.018.21.115.22.623.22.721.33.223.26.724.74.017.02.111.63.711.42.414.32.716.33.317.41.316.03.223.71.825.31.623.87.713.22.118.40.5
medium gap7.61.613.06.012.94.515.71.111.13.214.22.30.0.9.42.719.51.213.72.513.42.210.42.49.74.820.73.913.51.98.13.65.71.816.72.94.92.011.61.112.42.813.01.420.61.514.56.311.92.014.50.4
large gap12.02.019.56.99.44.018.91.212.43.218.22.513.69.924.23.929.61.311.22.314.92.28.22.227.47.021.64.015.12.06.73.312.82.524.13.39.82.715.01.222.23.613.41.422.41.611.75.79.51.818.40.5
very large gap3.31.10.0.0.0.2.60.50.0.3.91.39.19.13.01.52.90.50.40.43.21.11.71.15.13.63.41.72.70.90.0.1.60.94.31.62.11.40.90.32.21.31.70.51.20.45.84.13.61.12.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887371/353703
NFI4
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/ano gap46.73.248.914.833.88.829.42.249.46.029.84.275.016.218.67.312.32.042.24.824.53.330.74.327.312.225.46.525.34.444.56.849.44.219.24.839.05.038.85.411.66.431.22.512.02.927.312.329.92.931.00.8
small gap34.83.117.811.555.59.635.62.335.95.733.54.412.512.429.39.429.52.833.24.537.33.747.24.737.713.517.75.532.44.741.06.735.14.039.66.134.84.729.15.021.58.637.12.631.74.244.313.047.23.335.80.9
medium gap8.11.89.08.70.0.17.81.96.42.819.43.712.512.431.89.523.82.612.93.218.43.015.73.35.04.918.25.917.93.99.03.98.82.49.13.68.93.111.83.527.69.112.51.823.93.95.15.012.52.214.90.7
large gap9.11.824.312.65.84.015.51.88.33.216.43.20.0.20.28.133.22.910.72.917.93.05.32.230.012.936.57.221.54.25.53.15.82.029.05.516.53.720.34.439.39.917.12.031.64.223.310.69.91.917.00.7
very large gap1.20.70.0.4.94.91.70.60.0.0.90.90.0.0.0.1.10.71.01.01.91.11.21.20.0.2.22.22.91.70.0.0.90.93.02.10.70.70.0.0.0.2.20.80.90.90.0.0.50.51.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap..36.729.30.0.23.45.3..32.719.2..24.99.712.33.260.022.461.928.847.222.338.822.858.816.730.310.5..100.0.28.617.5..14.35.418.19.440.99.99.22.60.0...19.71.9
small gap..36.729.30.0.28.25.6..0.0...20.09.216.73.618.717.538.128.852.822.337.621.813.012.044.411.2..0.0.16.414.9..39.37.754.912.135.69.637.24.5100.0...30.42.2
medium gap..0.0.100.0.29.65.7..32.719.2..27.010.128.34.421.318.50.0.0.0.23.620.68.28.14.54.4..0.0.24.415.3..21.66.421.49.612.36.722.93.90.0...22.92.0
large gap..26.623.60.0.12.64.2..16.315.1..28.19.839.74.80.0.0.0.0.0.0.0.20.013.120.89.3..0.0.14.313.2..24.86.85.75.511.26.128.24.10.0...24.32.0
very large gap..0.0.0.0.6.23.0..18.316.3..0.0.3.01.70.0.0.0.0.0.0.0.0.0.0.0...0.0.16.414.9..0.0.0.0.0.0.2.61.50.0...2.70.8
total..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...100.0.100.0.100.0.100.0.100.0...100.0.
outside perimeterno gap..18.911.939.712.924.92.453.112.028.35.6..33.89.214.41.929.66.220.26.930.411.547.514.715.56.128.34.150.036.149.313.730.36.246.413.739.72.534.99.831.25.317.82.412.98.238.717.526.71.0
small gap..62.313.733.711.739.92.711.27.629.85.7..40.39.830.22.455.56.738.48.553.112.513.79.217.96.336.74.450.036.116.58.933.86.529.712.833.82.516.27.645.85.733.12.957.613.833.916.434.81.1
medium gap..9.49.115.210.214.92.035.711.719.94.8..7.24.919.32.17.43.617.76.611.07.410.09.534.98.015.43.30.0.25.612.510.54.19.18.712.41.730.49.814.24.019.92.514.19.70.0.16.30.8
large gap..9.49.111.37.719.42.20.0.22.15.1..11.66.433.22.57.53.620.87.15.55.428.812.931.67.619.53.60.0.8.58.221.45.614.810.013.61.818.48.48.83.227.92.815.410.127.416.321.00.9
very large gap..0.0.0.0.0.90.50.0.0.0...7.04.82.90.90.0.2.92.90.0.0.0.0.0.0.0.0.0.0.0.4.02.80.0.0.50.30.0.0.0.1.20.70.0.0.0.1.20.2
total..100.0.100.0.100.0.100.0.100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap46.73.234.59.435.27.327.11.650.15.429.43.375.016.225.95.113.31.238.63.824.33.031.33.936.38.724.44.527.32.944.76.749.74.024.33.739.94.737.52.121.75.131.82.214.41.620.27.730.22.928.50.6
small gap34.83.139.29.447.27.836.81.731.05.031.43.412.512.430.85.628.01.739.93.737.53.448.04.329.28.717.44.035.63.141.36.633.23.735.94.334.24.533.52.128.65.738.52.333.72.151.89.046.73.235.00.7
medium gap8.11.88.25.66.94.117.51.312.23.519.92.912.512.421.55.022.31.511.42.518.02.714.63.09.75.724.14.615.42.48.73.810.32.510.52.79.02.913.11.526.95.512.81.621.61.88.84.912.02.116.10.5
large gap9.11.818.17.67.53.616.91.36.72.618.22.60.0.19.34.734.11.79.42.218.12.75.11.924.88.033.04.820.42.65.33.06.02.025.03.816.33.515.61.622.85.215.31.728.92.019.27.410.52.019.10.5
very large gap1.20.70.0.3.23.21.70.50.0.1.10.80.0.2.61.82.30.60.60.62.01.01.01.00.0.1.11.11.20.70.0.0.80.84.21.80.60.60.40.30.0.1.70.61.40.50.0.0.50.51.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887372/353704
NFI4
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/ano gap46.43.253.114.333.88.829.72.251.45.930.94.163.216.118.26.613.31.842.04.725.73.431.34.222.610.323.46.026.54.244.56.849.14.122.34.839.44.930.74.014.56.131.42.413.32.624.111.130.82.930.50.8
small gap34.23.116.310.755.59.633.82.234.55.633.14.310.510.530.48.427.02.433.34.436.43.746.54.635.712.116.35.031.84.441.06.735.04.036.15.633.84.623.13.723.67.436.22.527.33.450.812.446.63.234.00.8
medium gap8.81.88.38.10.0.18.21.86.12.719.33.610.510.534.98.622.92.313.43.218.63.015.93.310.57.320.85.916.93.69.03.98.72.310.63.610.03.217.43.322.47.212.61.722.43.24.54.512.32.215.50.6
large gap9.41.822.311.85.84.016.81.88.03.115.83.115.711.416.56.835.72.610.42.917.52.95.12.131.211.937.66.922.14.05.53.16.42.128.25.216.03.628.13.939.58.417.81.936.43.720.69.59.81.918.80.7
very large gap1.20.70.0.4.94.91.60.60.0.0.90.90.0.0.0.1.20.60.90.91.81.01.21.20.0.2.02.02.61.50.0.0.80.82.71.90.70.70.70.70.0.1.90.70.60.60.0.0.50.51.20.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap..36.729.30.0.24.25.3..32.719.2..23.79.412.13.060.022.461.928.847.222.338.822.858.816.730.310.5..100.0.24.715.5..14.04.917.19.043.29.88.92.50.0...19.41.8
small gap..36.729.30.0.27.35.5..0.0...23.69.517.03.518.717.538.128.852.822.337.621.813.012.044.411.2..0.0.14.113.1..41.17.151.911.834.29.336.74.4100.0...30.22.1
medium gap..0.0.100.0.30.35.7..32.719.2..25.89.728.44.221.318.50.0.0.0.23.620.68.28.14.54.4..0.0.21.113.5..22.15.920.29.111.86.423.83.90.0...23.31.9
large gap..26.623.60.0.12.24.1..16.315.1..26.89.539.74.50.0.0.0.0.0.0.0.20.013.120.89.3..0.0.25.915.6..22.96.110.87.210.85.928.14.10.0...24.62.0
very large gap..0.0.0.0.6.02.9..18.316.3..0.0.2.81.60.0.0.0.0.0.0.0.0.0.0.0...0.0.14.113.1..0.0.0.0.0.0.2.51.40.0...2.50.7
total..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...100.0.100.0.100.0.100.0.100.0...100.0.
outside perimeterno gap..18.911.939.712.925.22.449.911.627.05.4..32.69.015.71.829.66.222.57.130.411.552.514.515.26.028.53.950.036.149.313.731.26.046.413.737.52.330.38.830.45.217.62.312.98.238.717.526.41.0
small gap..62.313.733.711.739.82.710.57.231.45.7..42.39.729.42.355.56.737.38.353.112.512.48.317.66.235.44.250.036.116.58.930.96.029.712.833.02.317.37.244.75.632.42.857.613.833.916.434.01.0
medium gap..9.49.115.210.214.51.939.511.520.44.7..7.04.719.02.07.43.617.26.411.07.49.18.736.17.915.03.10.0.25.612.511.24.09.18.714.01.729.68.916.44.218.82.314.19.70.0.16.50.8
large gap..9.49.111.37.719.62.20.0.21.14.9..11.26.233.12.37.53.620.26.95.55.426.012.331.17.521.23.50.0.8.58.223.05.514.810.015.11.722.98.48.63.129.42.715.410.127.416.321.70.9
very large gap..0.0.0.0.0.90.50.0.0.0...6.84.72.80.80.0.2.82.80.0.0.0.0.0.0.0.0.0.0.0.3.72.50.0.0.40.30.0.0.0.1.80.80.0.0.0.1.30.2
total..100.0.100.0.100.0.100.0.100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap46.43.237.19.435.27.327.51.551.15.329.73.263.216.124.64.814.31.238.63.725.73.031.83.935.18.123.34.327.82.844.76.749.43.926.13.640.24.634.31.920.44.531.92.114.51.518.97.331.12.928.10.6
small gap34.23.137.79.247.27.835.61.629.74.831.73.410.510.532.75.426.71.539.93.736.63.347.44.228.07.916.53.834.62.941.36.633.13.732.84.033.34.331.51.928.05.137.52.231.81.955.08.746.13.233.70.6
medium gap8.81.87.95.46.94.117.71.312.83.620.02.910.510.522.94.821.81.411.72.518.02.714.83.011.85.825.74.514.92.28.73.810.12.511.52.79.93.015.31.424.34.813.21.520.91.78.24.611.92.116.50.5
large gap9.41.817.47.47.53.617.51.36.42.517.52.515.711.417.44.335.01.69.22.217.72.64.91.925.17.533.54.621.52.55.33.06.52.026.03.615.93.418.41.627.35.015.91.631.21.917.97.010.41.920.30.5
very large gap1.20.70.0.3.23.21.70.40.0.1.00.70.0.2.31.62.10.50.60.62.01.01.01.00.0.1.01.01.10.60.0.0.80.83.71.60.60.60.50.30.0.1.50.61.60.50.0.0.50.51.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887373/353705
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap61.41.134.72.343.83.125.03.926.72.847.05.051.10.9
small gap14.90.822.12.117.12.426.94.018.72.418.93.917.10.7
medium gap10.10.720.62.015.32.320.83.721.82.617.43.713.70.6
large gap11.80.820.82.021.82.625.64.031.92.914.53.516.40.7
very large gap1.70.31.80.72.00.91.71.20.80.62.11.51.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap61.810.131.34.739.15.821.93.816.03.929.45.828.62.1
small gap12.66.823.34.318.24.626.34.120.04.328.05.822.72.0
medium gap8.65.813.03.415.44.323.83.930.75.021.45.320.31.9
large gap17.17.827.34.523.15.128.04.132.15.019.55.126.22.1
very large gap0.0.5.12.24.22.40.0.1.21.21.61.62.20.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap59.33.035.12.345.63.026.82.713.72.149.32.339.01.1
small gap18.52.422.42.014.02.130.12.822.62.518.01.820.80.9
medium gap11.92.019.82.017.02.321.12.523.32.611.71.517.10.9
large gap10.31.920.52.019.52.521.22.538.23.019.71.821.40.9
very large gap0.0.2.20.73.91.20.80.62.20.91.30.51.70.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap61.21.034.51.544.02.025.21.919.41.647.02.044.80.6
small gap15.40.822.41.415.91.528.42.020.61.619.11.618.90.5
medium gap10.30.719.41.316.11.521.61.823.71.713.61.415.50.5
large gap11.70.721.41.320.91.723.91.934.71.918.81.519.00.5
very large gap1.50.32.30.53.10.70.90.41.50.51.50.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887374/353706
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap61.31.134.62.242.22.922.03.124.22.435.03.748.70.8
small gap14.90.822.21.919.12.325.23.318.42.216.72.917.30.7
medium gap10.10.720.51.914.62.123.73.321.62.323.13.314.50.6
large gap12.00.720.91.922.02.427.93.534.62.723.73.317.80.7
very large gap1.70.31.80.62.10.81.20.91.30.61.30.91.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap61.810.131.34.637.65.622.93.815.33.727.55.428.02.0
small gap12.66.823.64.217.44.425.44.019.94.129.15.522.61.9
medium gap8.65.813.63.416.24.324.73.929.64.723.25.121.01.9
large gap17.17.826.54.424.75.127.04.034.14.818.84.726.32.0
very large gap0.0.5.02.24.12.30.0.1.11.11.41.42.10.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap59.23.035.52.344.82.926.22.613.21.945.62.137.71.0
small gap18.32.422.32.014.12.129.62.724.12.419.01.721.10.9
medium gap11.82.020.01.917.62.321.32.422.42.413.01.517.40.8
large gap10.71.920.11.919.92.421.82.537.42.820.51.721.70.9
very large gap0.0.2.10.73.61.11.10.63.01.01.90.62.00.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap61.11.034.71.542.81.924.21.818.31.441.71.743.10.6
small gap15.30.822.41.316.71.527.41.921.01.519.41.419.10.5
medium gap10.30.719.61.316.11.422.71.723.01.616.11.316.10.5
large gap11.90.721.11.321.41.624.71.835.71.821.11.519.90.5
very large gap1.50.32.20.53.00.70.90.42.00.51.70.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887375/353707
NFI3
number of forest plots
avalanches 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
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap61.21.134.42.242.22.821.93.124.22.434.53.648.50.8
small gap15.10.822.11.919.02.325.13.318.22.117.72.917.40.7
medium gap10.10.720.01.914.62.024.73.321.72.322.63.214.50.6
large gap11.90.721.71.922.22.427.13.434.42.623.23.217.90.7
very large gap1.70.31.70.62.00.81.20.81.60.71.91.11.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap61.810.132.04.637.65.622.93.817.13.826.75.328.32.0
small gap12.66.823.44.217.44.425.44.019.54.031.25.522.81.9
medium gap8.65.813.53.416.24.324.73.929.04.622.55.020.81.8
large gap17.17.826.34.424.75.127.04.033.44.818.24.626.02.0
very large gap0.0.4.92.14.12.30.0.1.11.11.41.42.10.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap58.93.035.22.345.12.926.22.613.61.945.42.137.71.0
small gap18.92.422.52.014.42.129.62.724.12.419.11.721.30.9
medium gap11.62.020.51.917.22.221.32.422.52.413.21.517.50.8
large gap10.51.919.71.919.82.421.82.536.92.820.51.721.50.9
very large gap0.0.2.10.73.51.11.10.63.01.01.80.62.00.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
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 #887376/353708
NFI3
number of forest plots
avalanches 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: terrestrial grid NFI3
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap60.01.132.32.040.12.723.02.923.22.234.83.547.30.8
small gap15.90.823.21.919.42.225.83.118.22.017.92.818.10.6
medium gap9.80.720.11.813.81.922.52.922.32.221.53.014.10.6
large gap12.00.721.61.823.42.326.83.133.62.524.23.118.00.6
very large gap2.30.32.70.73.31.02.01.02.70.91.71.02.50.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap62.19.530.74.235.95.321.13.515.23.423.44.726.51.9
small gap15.06.924.93.921.74.524.73.722.74.030.95.224.31.8
medium gap7.75.314.83.215.54.026.43.829.34.423.54.721.61.7
large gap15.17.024.73.923.24.727.03.831.04.420.94.525.31.8
very large gap0.0.4.92.03.72.10.80.81.91.31.21.22.40.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap58.22.933.92.143.42.725.52.513.61.844.52.036.91.0
small gap19.12.323.01.915.52.030.52.624.62.321.01.722.20.9
medium gap12.21.919.01.716.52.121.32.322.32.312.71.417.00.8
large gap10.21.820.51.820.92.321.72.435.32.620.21.621.50.8
very large gap0.30.33.50.83.81.11.00.64.21.11.70.52.50.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap59.81.032.91.441.01.823.81.718.11.340.51.641.80.6
small gap16.30.823.31.217.91.427.81.821.51.421.31.420.10.5
medium gap10.10.619.11.215.21.322.71.623.31.515.51.215.80.4
large gap11.80.721.41.222.31.524.41.733.91.721.11.419.80.5
very large gap2.10.33.30.53.60.71.30.43.20.61.60.42.50.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887377/353709
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap61.31.137.32.248.42.731.73.337.62.451.13.351.60.8
small gap14.90.821.41.916.92.121.92.914.51.712.82.216.20.6
medium gap10.10.719.41.813.11.821.22.917.31.916.92.513.60.6
large gap12.00.720.21.819.82.224.23.029.32.318.22.517.00.6
very large gap1.70.31.70.61.80.71.00.71.30.61.00.71.60.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap61.810.131.34.639.25.622.33.716.93.729.55.428.62.0
small gap12.66.823.64.217.04.325.73.919.34.028.35.422.41.9
medium gap8.65.813.63.415.74.224.13.829.84.622.55.020.81.8
large gap17.17.826.54.424.15.028.04.033.04.718.24.626.22.0
very large gap0.0.5.02.24.02.20.0.1.11.11.41.42.10.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap59.23.035.42.345.12.926.22.615.42.048.12.138.81.0
small gap18.32.422.52.014.22.129.62.723.52.418.11.620.80.9
medium gap11.82.020.01.917.62.221.32.421.82.312.41.417.10.8
large gap10.71.920.01.919.62.421.82.536.42.719.71.721.30.9
very large gap0.0.2.10.73.61.11.10.62.91.01.80.61.90.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap61.11.035.91.546.01.927.31.826.61.547.31.745.30.6
small gap15.30.822.11.315.81.426.21.818.51.417.51.318.30.5
medium gap10.30.719.11.215.21.421.81.720.51.414.41.215.40.5
large gap11.90.720.71.320.21.523.91.732.51.619.21.319.20.5
very large gap1.50.32.20.52.80.60.90.41.90.51.50.41.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887378/353710
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap61.21.137.02.148.42.731.63.237.82.450.43.351.40.8
small gap15.10.821.41.816.92.022.02.914.41.713.32.216.40.6
medium gap10.10.719.11.813.01.821.72.917.41.916.82.413.60.6
large gap11.90.720.81.819.92.223.83.028.92.218.12.517.00.6
very large gap1.70.31.70.61.80.71.00.71.50.61.40.81.60.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap61.810.132.04.639.25.622.33.718.43.828.75.328.92.0
small gap12.66.823.44.217.04.325.73.918.73.930.35.422.51.9
medium gap8.65.813.53.415.74.224.13.828.94.521.94.920.61.8
large gap17.17.826.34.424.15.028.04.032.94.717.74.526.12.0
very large gap0.0.4.92.14.02.20.0.1.01.01.31.32.00.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap58.93.035.12.345.32.926.22.615.52.048.22.138.81.0
small gap18.92.422.72.014.52.129.62.723.62.418.11.621.00.9
medium gap11.62.020.51.917.22.221.32.422.02.312.51.417.20.8
large gap10.51.919.61.919.52.321.82.536.12.719.51.721.10.9
very large gap0.0.2.10.73.51.11.10.62.91.01.70.51.90.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap60.91.035.71.446.21.827.21.827.01.547.11.745.20.6
small gap15.50.822.21.315.91.426.21.818.41.317.81.318.40.5
medium gap10.30.719.11.215.01.322.01.720.51.414.41.215.40.5
large gap11.80.720.81.220.21.523.71.732.11.619.01.319.20.5
very large gap1.40.32.10.42.70.60.90.42.00.51.60.41.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887379/353711
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest
grid: terrestrial grid NFI3
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap60.01.135.52.046.92.532.43.037.22.250.43.150.40.8
small gap15.90.822.31.817.11.922.62.714.41.613.52.217.00.6
medium gap9.80.719.01.712.31.719.82.617.91.816.12.313.20.5
large gap12.00.720.61.720.92.123.52.728.12.118.92.417.10.6
very large gap2.30.32.60.72.90.91.70.82.40.71.20.72.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap62.19.530.74.237.45.320.63.416.43.425.34.827.01.9
small gap15.06.924.93.921.24.424.93.721.93.930.25.124.01.8
medium gap7.75.314.83.215.23.925.83.729.24.322.94.621.31.7
large gap15.17.024.73.922.64.627.93.830.74.320.44.425.31.8
very large gap0.0.4.92.03.62.00.80.81.81.31.21.22.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap58.22.933.92.143.82.725.52.515.81.947.32.038.01.0
small gap19.12.323.21.915.52.030.52.623.92.320.01.621.80.8
medium gap12.21.919.01.716.52.021.32.321.82.212.01.316.70.8
large gap10.21.820.41.820.52.221.72.434.42.619.21.621.00.8
very large gap0.30.33.50.83.71.01.00.64.11.11.60.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap59.81.034.31.444.61.726.91.726.61.446.21.644.20.6
small gap16.30.823.01.216.91.326.61.718.91.319.11.319.20.5
medium gap10.10.618.61.114.31.221.71.620.81.314.01.115.10.4
large gap11.80.720.91.220.91.423.61.630.81.519.21.319.10.5
very large gap2.10.33.20.53.30.61.20.42.90.61.50.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887380/353712
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/an/a0.50.25.31.05.01.27.71.83.10.815.12.23.40.3
no gap61.01.135.42.146.02.729.63.136.42.443.53.049.90.8
small gap14.80.820.31.816.12.020.12.714.11.710.81.915.70.6
medium gap10.10.718.41.712.41.819.42.716.81.814.22.113.20.6
large gap11.90.719.11.718.82.122.22.828.42.215.62.216.40.6
very large gap1.70.31.60.61.70.70.90.71.30.60.80.61.50.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.2.91.76.12.73.11.54.02.00.0.3.10.8
no gap61.810.130.44.536.85.421.63.616.23.629.15.427.62.0
small gap12.66.822.94.115.94.124.93.818.53.829.35.421.81.8
medium gap8.65.813.23.314.83.923.33.728.64.522.24.920.11.8
large gap17.17.825.74.322.64.727.13.931.74.618.04.525.31.9
very large gap0.0.4.82.13.72.10.0.1.01.01.41.42.00.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.70.52.00.77.31.52.40.93.61.05.81.03.90.4
no gap58.83.034.72.241.92.825.62.615.02.045.22.037.31.0
small gap18.22.421.91.913.01.928.92.722.52.317.11.519.90.8
medium gap11.72.019.91.916.22.120.82.421.22.311.81.316.60.8
large gap10.61.919.51.918.32.221.32.434.92.618.41.620.50.8
very large gap0.0.2.00.73.31.01.10.62.80.91.60.51.90.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.50.23.70.66.10.94.40.83.40.68.00.93.60.2
no gap60.71.034.61.443.31.826.21.725.71.543.51.643.70.6
small gap15.20.821.21.214.81.325.01.717.81.316.21.217.60.5
medium gap10.30.718.51.214.31.320.81.619.91.413.31.114.90.4
large gap11.80.719.91.219.01.422.81.731.31.617.61.218.50.5
very large gap1.50.32.10.42.60.60.80.41.80.51.40.41.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887381/353713
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/an/a0.50.25.71.04.91.18.41.83.00.815.82.23.60.3
no gap60.91.134.92.146.12.628.93.036.62.342.43.049.60.8
small gap15.00.820.21.816.01.920.12.714.01.711.21.915.80.6
medium gap10.10.718.01.712.41.719.92.716.91.814.22.113.10.6
large gap11.90.719.61.719.02.121.82.828.02.215.22.116.40.6
very large gap1.70.31.60.51.70.70.90.71.50.61.20.71.50.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.3.71.86.12.73.11.53.91.90.0.3.30.8
no gap61.810.130.84.536.85.421.63.617.73.728.75.327.92.0
small gap12.66.822.54.015.94.124.93.818.03.830.35.421.81.8
medium gap8.65.813.03.214.83.923.33.727.84.421.94.919.91.8
large gap17.17.825.34.222.64.727.13.931.74.517.74.525.21.9
very large gap0.0.4.72.13.72.10.0.1.01.01.31.32.00.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.70.52.50.77.81.53.11.03.61.06.11.04.20.4
no gap58.53.034.32.241.82.725.42.515.02.045.22.037.11.0
small gap18.82.422.11.913.41.928.72.622.72.317.01.520.10.8
medium gap11.52.020.01.915.92.020.62.421.22.311.71.316.50.8
large gap10.51.919.11.818.02.221.12.434.82.618.31.620.20.8
very large gap0.0.2.00.73.21.01.10.62.80.91.60.51.80.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.50.24.20.66.20.95.00.93.40.68.50.93.80.2
no gap60.61.034.21.443.31.825.91.726.11.543.11.643.50.6
small gap15.40.821.31.214.91.324.91.717.81.316.31.217.70.5
medium gap10.20.718.31.214.11.320.91.619.81.413.21.114.80.4
large gap11.80.720.01.218.91.422.51.631.01.617.41.218.50.5
very large gap1.40.32.10.42.50.60.80.41.90.51.50.41.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887382/353714
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: forest
grid: terrestrial grid NFI3
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/an/a0.50.26.61.04.81.18.01.72.90.816.42.13.70.3
no gap59.71.133.21.944.62.529.82.836.12.242.12.848.50.8
small gap15.80.820.81.716.31.820.82.514.01.611.31.816.30.6
medium gap9.80.717.81.611.71.618.22.417.41.713.42.012.80.5
large gap11.90.719.21.619.92.021.62.627.32.015.82.116.40.6
very large gap2.30.32.40.62.70.81.60.82.30.71.00.62.20.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.3.21.68.62.92.71.34.21.90.0.3.50.8
no gap62.19.529.74.134.24.920.13.315.73.325.34.826.11.8
small gap15.06.924.13.819.44.124.23.621.03.730.25.123.21.7
medium gap7.75.314.43.113.93.625.13.628.04.122.94.620.61.7
large gap15.17.023.93.820.74.227.13.729.44.120.44.424.41.8
very large gap0.0.4.81.93.31.90.70.71.71.21.21.22.20.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.70.52.70.77.01.43.51.03.61.06.40.94.20.4
no gap57.82.933.02.040.72.624.62.415.31.944.31.936.40.9
small gap18.92.322.61.814.41.929.52.623.12.218.71.520.90.8
medium gap12.11.918.51.715.41.920.52.321.02.211.21.216.00.7
large gap10.21.819.91.719.12.120.92.333.22.517.91.520.20.8
very large gap0.30.33.40.83.41.01.00.63.91.01.50.52.30.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.50.14.60.66.10.85.00.83.30.68.80.93.90.2
no gap59.51.032.71.341.91.725.61.625.71.442.21.542.50.5
small gap16.20.721.91.215.91.225.31.618.31.217.41.218.50.5
medium gap10.00.617.71.113.41.220.61.520.11.312.81.014.50.4
large gap11.80.720.01.119.61.422.41.629.81.517.51.218.40.4
very large gap2.00.33.10.53.10.61.20.42.80.51.30.42.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887383/353715
NFI4
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap38.11.121.02.023.32.712.02.910.71.937.24.830.90.8
small gap38.21.133.22.434.73.031.74.230.12.927.74.535.90.9
medium gap11.40.821.22.016.02.323.93.923.42.715.63.614.90.7
large gap10.90.723.72.123.82.731.64.234.63.019.53.917.00.7
very large gap1.40.31.00.52.10.90.90.91.20.70.0.1.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap52.210.429.64.625.15.19.22.612.83.613.14.319.61.9
small gap26.19.229.14.636.45.737.24.515.23.934.56.130.22.1
medium gap17.47.923.04.218.64.722.93.930.05.021.35.323.12.0
large gap4.34.213.23.418.54.628.24.138.35.331.15.924.52.0
very large gap0.0.5.12.21.31.32.61.53.72.10.0.2.70.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap38.23.022.22.029.22.817.82.411.71.936.72.226.71.0
small gap40.73.037.32.436.13.033.12.928.82.834.12.235.11.1
medium gap11.42.018.31.915.02.219.92.521.42.512.41.516.20.8
large gap9.21.821.52.018.12.427.92.835.12.915.91.720.80.9
very large gap0.40.40.70.41.60.81.20.73.11.10.80.41.20.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap38.21.122.41.426.21.814.41.611.41.334.51.928.40.6
small gap38.41.134.61.635.52.033.72.127.41.833.11.935.10.7
medium gap11.50.720.11.315.91.521.61.823.41.713.81.416.10.5
large gap10.60.721.61.320.61.728.92.035.31.917.91.519.00.5
very large gap1.30.21.30.41.70.51.40.52.40.60.60.31.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #887384/353716
NFI3
number of forest plots
avalanches 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
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/ano gap54.41.973.43.062.83.157.12.661.82.029.84.634.32.841.93.530.24.033.85.641.26.223.02.923.22.234.83.547.40.8
small gap19.71.59.11.912.62.116.72.014.71.526.44.523.12.518.62.720.83.616.74.425.35.625.83.118.22.017.92.818.00.6
medium gap11.71.25.01.58.81.99.31.610.31.317.03.920.32.414.02.521.73.617.74.49.23.622.52.922.32.221.53.014.10.6
large gap13.41.311.62.111.62.114.21.99.71.222.44.319.12.321.52.926.63.928.95.422.85.326.83.133.62.524.23.118.00.6
very large gap0.90.40.90.64.21.32.70.83.50.74.52.23.11.04.01.40.70.72.82.01.51.52.01.02.70.91.71.02.50.3
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.
inside perimeterno gap60.79.7....100.0...39.99.821.57.363.912.031.85.919.97.338.18.221.13.515.23.423.44.726.51.9
small gap15.77.2....0.0...21.27.826.97.723.810.524.85.531.88.410.44.924.73.722.74.030.95.224.21.8
medium gap7.95.4....0.0...7.35.021.87.36.26.014.54.519.47.017.16.526.43.829.34.423.54.721.71.8
large gap15.77.2....0.0...19.27.929.98.06.26.024.55.525.88.028.17.727.03.831.04.420.94.525.31.8
very large gap0.0.....0.0...12.56.80.0.0.0.4.52.53.23.16.34.40.80.81.91.31.21.22.40.7
total100.0.....100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap56.74.055.810.443.39.562.06.471.78.034.54.236.73.148.43.529.13.846.57.528.14.825.52.513.61.844.52.036.81.0
small gap18.13.117.78.030.18.915.24.722.17.419.73.524.72.817.42.722.23.59.04.214.44.130.52.624.62.321.01.722.20.9
medium gap15.52.918.18.211.66.38.53.60.0.23.73.918.62.516.52.716.73.110.74.519.84.421.32.322.32.312.71.417.10.8
large gap9.72.48.35.615.07.012.84.56.24.318.63.517.62.514.82.526.73.731.67.130.65.221.72.435.32.620.21.621.50.8
very large gap0.0.0.0.0.0.1.61.50.0.3.41.72.41.02.81.25.41.92.22.27.12.91.00.64.21.11.70.52.40.3
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 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 #887385/353717
NFI3
number of forest plots
avalanches 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
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/ano gap55.32.072.13.264.73.259.92.863.42.134.55.037.13.044.93.740.04.247.25.757.55.931.73.337.62.451.13.351.60.8
small gap19.11.69.42.110.62.114.32.014.01.523.34.521.92.619.12.918.43.413.03.816.24.521.92.914.51.712.82.216.20.6
medium gap12.01.35.41.69.02.09.21.710.81.417.74.219.82.513.72.620.23.515.44.19.03.221.22.917.31.916.92.513.60.6
large gap13.11.412.02.311.52.215.12.09.41.321.94.519.42.420.13.020.63.521.84.717.34.424.23.029.32.318.22.517.10.6
very large gap0.40.31.00.74.21.41.50.72.50.72.61.81.80.82.31.10.70.72.61.90.0.1.00.71.30.61.00.71.60.2
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 gap61.810.1........39.910.321.47.865.612.732.86.628.48.538.18.622.33.716.93.729.55.428.62.0
small gap12.76.9........23.68.628.68.620.510.720.05.623.77.98.84.925.73.919.34.028.35.422.21.9
medium gap8.55.8........4.44.318.47.56.96.715.95.220.27.316.06.724.13.829.84.622.55.020.91.8
large gap17.07.8........22.29.031.68.86.96.725.66.224.28.130.38.228.04.033.04.718.24.626.12.0
very large gap0.0.........9.96.80.0.0.0.5.83.23.43.46.74.70.0.1.11.11.41.42.10.7
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap58.34.154.111.241.110.165.56.871.38.636.84.638.13.451.33.829.84.249.77.526.44.826.22.615.42.048.12.138.71.0
small gap16.33.120.19.033.69.714.04.921.57.818.33.724.73.015.02.721.33.78.54.015.84.529.62.723.52.418.11.620.80.9
medium gap14.83.021.19.48.45.78.13.90.0.26.24.419.42.818.33.017.33.413.14.919.44.721.32.421.82.312.41.417.30.8
large gap10.62.64.84.716.97.712.54.87.14.915.23.517.32.612.72.627.64.128.76.830.65.521.82.536.42.719.71.721.30.9
very large gap0.0.0.0.0.0.0.0.0.0.3.41.90.50.52.71.34.01.70.0.7.73.11.10.62.91.01.80.61.90.3
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 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 #887386/353718
NFI3
number of forest plots
avalanches 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
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/ano gap55.12.072.13.265.23.259.32.763.42.034.85.037.23.045.03.738.64.147.45.657.25.831.63.237.82.450.43.351.40.8
small gap19.21.69.42.110.42.115.02.014.11.522.84.422.12.618.92.918.53.312.33.617.24.522.02.914.41.713.32.216.30.6
medium gap12.01.35.41.68.92.09.41.710.71.417.34.119.62.513.52.519.53.415.84.08.83.221.72.917.41.916.82.413.60.6
large gap13.31.412.02.311.42.214.82.09.31.322.64.519.32.420.43.022.83.621.94.616.84.323.83.028.92.218.12.517.10.6
very large gap0.40.31.00.74.11.31.50.72.50.72.51.81.80.82.21.10.70.72.51.80.0.1.00.71.50.61.40.81.60.2
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 gap61.810.1........39.910.321.47.865.612.734.06.628.48.538.18.622.33.718.43.828.75.328.82.0
small gap12.76.9........23.68.628.68.620.510.719.65.523.77.98.84.925.73.918.73.930.35.422.41.9
medium gap8.55.8........4.44.318.47.56.96.715.65.120.27.316.06.724.13.828.94.521.94.920.71.8
large gap17.07.8........22.29.031.68.86.96.725.16.124.28.130.38.228.04.032.94.717.74.526.02.0
very large gap0.0.........9.96.80.0.0.0.5.73.23.43.46.74.70.0.1.01.01.31.32.10.7
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap57.54.154.111.243.39.965.56.871.38.636.14.637.93.451.63.829.94.149.77.527.14.826.22.615.52.048.22.138.71.0
small gap17.53.220.19.032.49.414.04.921.57.818.73.724.72.915.72.821.73.78.54.015.34.329.62.723.62.418.11.620.90.9
medium gap14.62.921.19.48.15.58.13.90.0.27.04.419.92.817.72.917.63.413.14.918.94.521.32.422.02.312.51.417.30.8
large gap10.42.64.84.716.27.512.54.87.14.914.93.417.02.612.32.527.04.028.76.831.25.421.82.536.12.719.51.721.10.9
very large gap0.0.0.0.0.0.0.0.0.0.3.31.90.50.52.61.33.91.70.0.7.53.01.10.62.91.01.70.51.90.3
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 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 #887387/353719
NFI3
number of forest plots
avalanches 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
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/ano gap54.41.973.43.062.83.157.12.661.82.032.74.635.32.842.73.438.03.947.05.255.55.332.43.037.22.250.43.150.40.8
small gap19.71.59.11.912.62.116.72.014.71.525.34.423.02.518.32.718.83.213.13.519.04.322.62.714.41.613.52.216.90.6
medium gap11.71.25.01.58.81.99.31.610.31.316.23.819.92.413.82.518.83.213.93.67.42.719.82.617.91.816.12.313.20.5
large gap13.41.311.62.111.62.114.21.99.71.221.54.218.72.321.22.923.83.523.84.517.03.923.52.728.12.118.92.417.10.6
very large gap0.90.40.90.64.21.32.70.83.50.74.32.13.01.03.91.40.60.62.21.61.11.11.70.82.40.71.20.72.30.2
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 gap60.79.7....100.0...39.99.821.57.363.912.031.85.924.87.638.18.220.63.416.43.425.34.827.01.9
small gap15.77.2....0.0...21.27.826.97.723.810.524.85.529.98.010.44.924.93.721.93.930.25.123.91.8
medium gap7.95.4....0.0...7.35.021.87.36.26.014.54.518.26.617.16.525.83.729.24.322.94.621.41.7
large gap15.77.2....0.0...19.27.929.98.06.26.024.55.524.27.528.17.727.93.830.74.320.44.425.31.8
very large gap0.0.....0.0...12.56.80.0.0.0.4.52.53.03.06.34.40.80.81.81.31.21.22.40.6
total100.0.....100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap56.74.055.810.443.39.562.06.471.78.034.34.236.73.148.73.529.13.846.87.229.04.925.52.515.81.947.32.037.91.0
small gap18.13.117.78.030.18.915.24.722.17.420.43.524.72.817.42.722.23.510.34.314.24.030.52.623.92.320.01.621.80.8
medium gap15.52.918.18.211.66.38.53.60.0.23.53.918.62.516.52.616.73.111.94.519.54.421.32.321.82.212.01.316.80.8
large gap9.72.48.35.615.07.012.84.56.24.318.53.417.62.514.82.526.73.729.16.730.25.221.72.434.42.619.21.621.10.8
very large gap0.0.0.0.0.0.1.61.50.0.3.41.72.41.02.71.25.41.92.02.07.02.81.00.64.11.11.60.52.40.3
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 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 #887388/353720
NFI3
number of forest plots
avalanches 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
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.50.30.50.51.40.80.70.50.0.3.01.73.41.11.81.09.82.411.63.54.82.47.71.83.10.815.12.23.40.3
no gap55.02.071.83.263.83.259.32.763.42.134.24.935.82.944.13.636.13.941.75.354.75.729.63.136.42.443.53.049.90.8
small gap19.01.69.42.010.42.114.12.014.01.522.44.321.12.518.82.916.63.111.53.415.44.320.12.714.11.710.81.915.60.6
medium gap12.01.35.41.68.92.09.51.710.81.416.94.119.12.413.42.518.23.213.63.68.63.119.42.716.81.814.22.113.20.6
large gap13.11.412.02.311.42.214.92.09.41.321.04.318.82.419.72.918.63.219.24.216.54.322.22.828.42.215.62.216.50.6
very large gap0.40.31.00.74.11.31.50.72.50.72.41.71.80.82.21.10.70.72.31.60.0.0.90.71.30.60.80.61.50.2
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.
inside perimetern/a0.0.........0.0.0.0.6.56.35.12.99.15.03.83.83.11.54.02.00.0.3.10.8
no gap61.810.1........39.910.321.47.861.312.631.16.325.97.936.78.421.63.616.23.629.15.427.62.0
small gap12.76.9........23.68.628.68.619.210.018.95.421.67.38.54.724.93.818.53.829.35.421.71.8
medium gap8.55.8........4.44.318.47.56.56.315.14.918.46.715.46.523.33.728.64.522.24.920.21.8
large gap17.07.8........22.29.031.68.86.56.324.35.922.07.429.27.927.13.931.74.618.04.525.31.9
very large gap0.0.........9.96.80.0.0.0.5.53.13.13.16.44.50.0.1.01.01.41.42.10.7
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.70.70.0.0.0.2.12.00.0.0.80.82.81.11.91.11.71.212.14.716.64.22.40.93.61.05.81.03.90.4
no gap58.04.154.111.241.110.164.16.871.38.636.14.637.23.350.93.829.34.143.77.021.74.025.62.615.02.045.22.037.21.0
small gap16.23.120.19.033.69.713.74.821.57.818.03.623.82.914.62.721.03.77.53.513.03.728.92.722.52.317.11.519.90.8
medium gap14.73.021.19.48.45.77.93.80.0.27.04.419.12.717.72.917.03.411.54.416.03.920.82.421.22.311.81.316.70.8
large gap10.52.64.84.716.97.712.24.77.14.914.93.416.72.512.32.527.14.025.36.226.44.821.32.434.92.618.41.620.40.8
very large gap0.0.0.0.0.0.0.0.0.0.3.31.90.50.52.61.33.91.70.0.6.42.61.10.62.80.91.60.51.90.3
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.
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 #887389/353721
NFI3
number of forest plots
avalanches 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
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.50.30.50.51.40.80.60.50.0.3.01.73.71.21.71.010.72.511.13.34.72.38.41.83.00.815.82.23.60.3
no gap54.82.071.83.264.33.258.92.763.42.033.84.935.82.944.23.634.53.842.15.254.55.728.93.036.62.342.43.049.60.8
small gap19.11.69.42.010.32.014.92.014.11.522.14.321.32.518.62.916.53.011.03.216.44.320.12.714.01.711.21.915.70.6
medium gap12.01.35.41.68.81.99.31.710.71.416.74.018.92.413.32.517.43.014.13.68.43.019.92.716.91.814.22.113.10.6
large gap13.21.412.02.311.22.114.72.09.31.321.94.418.62.320.02.920.33.219.54.216.04.221.82.828.02.215.22.116.50.6
very large gap0.40.31.00.74.11.31.50.62.50.72.41.71.70.82.21.10.60.62.21.60.0.0.90.71.50.61.20.71.50.2
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.
inside perimetern/a0.0.........0.0.3.13.16.56.35.02.89.15.03.83.83.11.53.91.90.0.3.30.8
no gap61.810.1........39.910.320.77.661.312.632.36.325.97.936.78.421.63.617.73.728.75.327.92.0
small gap12.76.9........23.68.627.78.419.210.018.65.321.67.38.54.724.93.818.03.830.35.421.61.8
medium gap8.55.8........4.44.317.87.36.56.314.84.818.46.715.46.523.33.727.84.421.94.920.01.8
large gap17.07.8........22.29.030.68.66.56.323.85.822.07.429.27.927.13.931.74.517.74.525.21.9
very large gap0.0.........9.96.80.0.0.0.5.43.03.13.16.44.50.0.1.01.01.31.32.00.6
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.70.70.0.0.0.2.12.00.0.0.70.72.71.13.01.33.21.612.14.716.44.23.11.03.61.06.11.04.20.4
no gap57.14.154.111.243.39.964.16.871.38.635.84.536.93.350.13.728.94.043.77.022.64.125.42.515.02.045.22.037.11.0
small gap17.43.220.19.032.49.413.74.821.57.818.63.624.02.915.22.721.03.67.53.512.83.728.72.622.72.317.01.520.00.8
medium gap14.52.921.19.48.15.57.93.80.0.26.84.419.32.717.22.817.03.311.54.415.83.920.62.421.22.311.71.316.60.8
large gap10.42.54.84.716.27.512.24.77.14.914.83.416.62.511.92.426.13.925.36.226.14.821.12.434.82.618.31.620.20.8
very large gap0.0.0.0.0.0.0.0.0.0.3.31.90.50.52.51.23.71.60.0.6.32.51.10.62.80.91.60.51.80.3
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.
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 #887390/353722
NFI4
number of forest plots
avalanches 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
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.50.30.50.51.40.81.00.60.0.4.02.03.41.11.20.98.52.310.43.34.82.48.21.82.60.813.52.13.20.3
no gap37.32.051.43.539.43.333.02.635.62.125.64.619.12.426.33.225.93.625.64.724.64.813.72.313.81.725.42.629.40.7
small gap36.91.932.43.334.33.337.92.741.62.127.14.632.52.937.83.626.73.724.24.626.95.225.42.929.52.222.22.533.10.8
medium gap13.01.47.31.88.92.015.02.110.31.322.14.521.12.512.82.515.93.012.53.524.15.021.22.821.02.018.32.315.20.6
large gap11.51.37.21.812.92.211.01.811.71.421.24.422.52.419.42.923.03.526.14.719.74.631.13.131.82.320.12.418.00.6
very large gap0.90.41.10.83.11.12.20.90.80.40.0.1.50.72.41.20.0.1.21.20.0.0.50.51.20.50.40.41.10.2
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 perimetern/a0.0.........0.0.0.0.6.56.35.12.96.14.20.0.3.11.53.01.71.41.42.70.7
no gap52.210.5........36.710.037.69.340.012.722.45.719.27.024.27.68.42.413.63.412.43.919.01.7
small gap26.49.2........28.69.917.27.134.112.433.76.534.28.533.08.337.14.315.73.636.15.729.82.0
medium gap17.27.9........21.78.820.07.46.56.323.85.821.57.319.17.122.53.727.84.420.84.822.31.8
large gap4.24.1........8.65.921.07.712.88.59.34.016.06.623.77.026.63.936.94.829.25.423.81.9
very large gap0.0.........4.44.34.24.10.0.5.73.23.03.00.0.2.31.33.11.70.0.2.40.7
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.70.70.0.0.0.0.0.0.0.2.01.52.81.13.01.30.0.10.24.414.54.01.40.73.31.05.00.93.40.4
no gap35.74.049.011.332.99.637.46.842.69.421.44.020.02.830.13.527.24.025.36.119.94.217.52.213.41.933.61.925.80.9
small gap39.14.115.08.063.29.946.37.139.99.329.94.442.33.436.73.630.94.225.06.127.64.932.02.727.62.531.71.933.21.0
medium gap16.03.131.310.60.0.2.02.03.93.827.24.415.12.413.42.616.13.319.85.711.93.418.32.319.62.212.81.415.70.8
large gap8.62.44.84.73.83.811.94.613.76.419.53.919.12.615.52.725.03.919.75.623.94.629.02.733.22.616.31.520.80.8
very large gap0.0.0.0.0.0.2.42.30.0.0.0.0.80.61.30.90.80.80.0.2.21.51.80.82.90.90.70.31.20.2
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.
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 #887391/353723
NFI3
number of forest plots
avalanches 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
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.60.30.50.51.70.80.60.40.0.4.72.14.11.22.01.011.82.410.83.13.81.98.01.72.90.816.42.13.70.3
no gap54.11.973.13.061.73.156.82.661.82.031.24.533.92.741.93.433.63.642.04.953.35.229.82.836.12.242.12.848.60.8
small gap19.51.59.11.912.42.116.62.014.71.524.14.222.12.417.92.716.52.911.73.118.34.120.82.514.01.611.31.816.30.6
medium gap11.61.24.91.58.71.89.21.610.31.315.53.619.12.313.52.416.62.812.43.27.22.618.22.417.41.713.42.012.70.5
large gap13.31.311.62.111.42.114.21.89.71.220.54.017.92.220.82.821.03.121.24.016.33.821.62.627.32.015.82.116.50.6
very large gap0.90.40.90.64.11.32.70.83.50.74.12.02.91.03.91.30.50.52.01.41.01.01.60.82.30.71.00.62.20.2
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 perimetern/a0.0.....0.0...0.0.2.62.611.87.84.32.48.34.69.95.32.71.34.21.90.0.3.70.8
no gap60.79.7....100.0...39.99.820.97.156.411.730.45.722.77.134.37.720.13.315.73.325.34.826.01.8
small gap15.77.2....0.0...21.27.826.27.621.09.423.75.327.47.49.34.424.23.621.03.730.25.123.01.7
medium gap7.95.4....0.0...7.35.021.27.25.45.313.94.316.76.215.46.025.13.628.04.122.94.620.61.7
large gap15.77.2....0.0...19.27.929.17.85.45.323.45.322.27.025.47.127.13.729.44.120.44.424.41.8
very large gap0.0.....0.0...12.56.80.0.0.0.4.32.42.72.75.74.00.70.71.71.21.21.22.30.6
total100.0.....100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.60.60.0.0.0.1.91.90.0.0.70.72.81.02.61.13.91.611.14.315.13.93.51.03.61.06.40.94.30.4
no gap56.34.055.810.443.39.560.96.471.78.034.04.135.73.147.43.527.93.741.56.724.64.224.62.415.31.944.31.936.30.9
small gap18.03.117.78.030.18.914.94.622.17.420.23.524.02.716.92.621.43.49.13.912.13.529.52.623.12.218.71.520.90.8
medium gap15.42.918.18.211.66.38.33.50.0.23.43.818.12.516.02.616.03.010.64.016.63.820.52.321.02.211.21.216.10.7
large gap9.62.48.35.615.07.012.54.46.24.318.43.417.12.414.42.425.63.625.96.025.74.620.92.333.22.517.91.520.20.8
very large gap0.0.0.0.0.0.1.51.50.0.3.31.72.30.92.71.25.21.81.81.86.02.41.00.63.91.01.50.52.30.3
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.
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 #887392/353724
NFI3
number of forest plots
avalanches 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
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/ano gap60.11.762.41.538.62.229.41.947.05.051.10.9
small gap16.81.313.61.121.11.920.21.718.93.917.10.7
medium gap10.11.110.00.918.01.821.01.717.43.713.70.6
large gap12.41.211.41.019.91.828.41.914.53.516.40.7
very large gap0.60.32.60.52.40.70.90.42.11.51.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap61.510.1..36.16.024.42.429.45.828.62.1
small gap12.97.0..26.05.521.52.328.05.822.62.0
medium gap8.55.8..11.14.023.02.421.45.320.41.9
large gap17.17.8..23.65.328.72.619.55.126.22.1
very large gap0.0...3.12.22.40.91.61.62.20.7
total100.0...100.0.100.0.100.0.100.0.
outside perimeterno gap58.03.961.24.942.22.323.91.549.32.339.11.1
small gap17.03.020.84.020.11.823.71.618.01.820.80.9
medium gap15.72.96.02.420.21.920.21.511.71.517.10.9
large gap9.42.312.03.215.61.729.61.719.71.821.30.9
very large gap0.0.0.0.1.80.62.50.61.30.51.70.3
total100.0.100.0.100.0.100.0.100.0.100.0.
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 #887393/353725
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