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NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %± %±
n/an/a0.40.11.60.64.01.22.21.31.00.60.0.1.00.2
crowded27.81.020.61.928.92.716.23.010.41.822.33.724.50.8
normal39.31.118.41.921.42.512.62.815.62.120.13.530.50.8
loose17.40.917.91.812.82.015.93.122.82.410.22.717.20.7
open9.60.716.61.811.11.920.23.421.02.417.03.312.60.6
scattered2.50.48.91.38.71.720.73.416.52.115.23.16.60.4
grouped crowded0.90.25.41.14.01.22.81.47.11.53.01.52.60.3
grouped normal0.90.27.41.25.51.47.92.34.01.19.22.53.20.3
heterogeneous1.20.33.20.83.61.11.41.01.70.83.01.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.2.01.46.93.02.61.50.0.0.0.2.20.7
crowded13.17.128.44.530.65.315.43.313.23.69.63.719.31.8
normal43.910.420.34.032.55.418.83.519.64.213.84.322.01.9
loose25.69.120.94.19.43.421.53.720.54.317.14.718.91.8
open8.85.913.43.37.03.024.23.924.24.524.55.318.41.8
scattered8.55.84.02.05.42.65.92.211.43.49.13.57.01.2
grouped crowded0.0.5.02.21.31.35.12.05.42.46.23.04.40.9
grouped normal0.0.2.91.75.42.63.31.63.52.09.13.54.20.9
heterogeneous0.0.2.91.71.41.43.31.62.31.610.63.83.50.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.1.20.51.80.81.50.83.11.00.80.41.30.3
crowded32.62.925.42.133.02.820.42.410.01.735.22.126.81.0
normal40.73.025.92.130.32.720.42.417.82.221.31.925.41.0
loose15.82.217.41.813.52.015.52.221.22.412.11.515.70.8
open6.81.514.91.79.61.719.32.424.42.514.71.615.00.8
scattered1.20.74.10.95.11.38.91.712.81.97.11.16.50.5
grouped crowded0.70.54.20.92.91.05.61.44.81.23.00.83.50.4
grouped normal0.70.53.00.81.10.64.01.25.01.23.60.83.00.4
heterogeneous1.50.73.90.92.91.04.41.21.00.62.20.72.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.30.11.40.43.30.71.90.61.80.50.60.31.20.1
crowded28.31.023.61.330.91.818.11.610.51.230.41.724.90.6
normal39.51.022.01.326.71.717.91.617.11.420.41.527.90.6
loose17.30.818.01.212.71.316.91.621.81.612.21.316.80.5
open9.20.615.51.19.91.220.61.822.91.616.11.414.00.5
scattered2.40.36.20.86.71.011.51.414.21.38.81.16.60.3
grouped crowded0.90.24.80.73.20.74.70.95.90.93.30.73.10.2
grouped normal0.90.25.00.73.50.74.90.94.40.85.10.83.20.2
heterogeneous1.20.23.50.63.00.73.30.81.50.53.10.72.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853164/319495
NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI2
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %± %±
n/an/a0.40.11.60.64.11.11.91.11.20.60.0.1.00.2
crowded28.81.020.21.828.12.518.03.010.81.721.53.425.00.7
normal38.81.119.61.821.02.312.82.616.52.018.23.230.30.8
loose17.20.817.21.712.81.815.72.822.72.311.82.717.00.6
open9.40.616.71.710.71.719.43.120.52.215.73.012.30.5
scattered2.50.39.31.39.41.619.93.116.02.015.43.06.70.4
grouped crowded0.80.24.91.03.81.13.71.57.21.44.61.72.60.3
grouped normal1.00.26.81.16.21.37.42.03.61.09.52.43.20.3
heterogeneous1.20.23.70.84.01.11.20.91.50.73.31.51.90.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.1.91.37.12.82.31.30.0.0.0.2.10.6
crowded12.26.629.24.328.64.916.53.212.03.310.03.619.31.7
normal44.310.020.53.832.75.021.33.522.04.212.23.823.01.8
loose27.58.919.93.89.23.120.33.418.84.017.94.518.21.7
open8.05.512.23.18.43.022.83.625.34.424.45.018.21.7
scattered8.05.44.52.04.72.35.21.911.63.38.13.26.71.1
grouped crowded0.0.4.62.01.21.25.21.95.02.25.62.74.20.9
grouped normal0.0.3.61.87.02.73.61.63.21.810.93.64.90.9
heterogeneous0.0.3.51.71.21.22.91.42.11.510.93.63.60.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.1.00.52.50.91.70.72.70.90.70.41.40.2
crowded33.42.725.72.033.82.620.62.39.81.635.62.027.20.9
normal40.32.926.42.029.32.520.22.319.32.121.11.725.40.9
loose15.02.116.91.712.91.915.92.120.32.212.01.415.30.7
open7.51.514.81.68.91.619.52.324.22.315.31.515.20.7
scattered1.10.64.00.95.11.28.51.613.41.96.91.16.50.5
grouped crowded0.70.54.60.92.80.95.91.34.51.12.80.73.60.4
grouped normal0.70.52.70.71.90.83.51.05.01.13.60.83.00.3
heterogeneous1.30.73.80.92.80.94.21.10.80.52.00.62.50.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.30.11.40.43.70.71.90.61.70.50.50.31.20.1
crowded29.20.923.61.330.71.719.01.610.51.130.51.625.30.5
normal39.01.022.71.226.11.618.51.618.41.419.71.427.90.5
loose17.10.817.31.112.41.216.81.521.21.512.51.216.50.5
open9.10.615.41.19.61.120.21.622.71.516.21.313.80.4
scattered2.40.36.50.76.90.910.91.314.31.28.61.06.60.3
grouped crowded0.80.24.70.63.10.65.10.95.70.83.40.63.10.2
grouped normal1.00.24.60.64.40.84.60.84.20.75.40.83.30.2
heterogeneous1.20.23.70.63.10.63.10.71.30.43.10.62.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853165/319496
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1983/85
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a3.20.76.01.73.61.43.51.03.10.810.93.74.51.36.22.011.83.510.84.57.34.16.62.22.81.15.02.24.50.4
crowded27.21.839.73.535.43.340.92.837.72.127.15.122.82.832.23.613.43.619.65.224.77.014.43.218.62.432.14.630.10.8
heterogeneous8.31.10.0.1.10.81.00.61.20.52.72.08.21.83.11.41.21.22.32.22.52.50.80.86.31.52.01.43.70.3
normal, loose34.82.043.83.638.83.544.92.951.52.232.85.530.93.032.33.625.54.722.86.114.95.817.53.426.82.824.74.336.60.9
open, scattered23.21.710.02.117.82.78.01.55.01.018.44.720.32.615.42.838.75.226.46.122.36.743.54.524.52.725.54.317.90.7
crowded, clustered normal3.20.70.50.53.41.31.70.81.50.58.13.213.32.210.72.59.53.218.25.528.37.517.23.420.92.610.63.07.10.5
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.........9.06.20.0.0.0.6.33.54.44.39.85.52.61.52.31.60.0.3.10.8
crowded25.89.1........34.010.330.38.958.613.224.26.139.69.939.18.914.13.217.54.121.55.323.82.0
heterogeneous8.65.9........3.93.87.55.10.0.6.33.54.03.90.0.5.02.03.31.94.92.84.51.0
normal, loose44.210.4........34.910.220.77.627.511.831.36.728.39.129.78.132.84.331.75.021.45.330.22.1
open, scattered16.97.7........8.55.826.98.20.0.23.76.08.35.68.84.929.04.220.24.422.95.420.81.9
crowded, clustered normal4.64.5........9.86.614.56.713.99.18.34.015.47.112.66.016.53.425.04.629.35.817.41.8
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a7.92.39.66.43.83.84.12.93.93.85.32.45.11.55.21.83.61.80.0.5.02.94.41.32.91.02.80.84.20.5
crowded42.74.246.211.27.65.232.96.830.88.726.04.330.63.337.93.817.93.637.98.432.25.816.72.318.32.341.32.330.11.0
heterogeneous2.81.40.0.0.0.6.23.53.93.80.80.813.52.44.81.66.02.20.0.0.0.5.71.45.41.42.10.74.70.5
normal, loose33.04.034.710.762.89.942.07.051.19.529.94.627.03.239.13.938.04.537.78.235.25.922.62.623.52.622.52.028.81.0
open, scattered12.22.89.66.425.79.110.64.53.33.226.74.511.82.26.61.921.33.88.84.915.74.634.22.930.22.819.21.820.20.9
crowded, clustered normal1.41.00.0.0.0.4.12.97.14.911.33.212.02.36.42.013.23.115.56.111.83.916.52.319.62.412.11.512.00.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a4.00.76.31.63.71.33.61.03.10.87.92.04.50.95.51.36.91.65.92.36.82.24.50.92.80.72.90.74.30.3
crowded30.01.640.33.332.43.139.82.637.42.127.33.126.62.136.02.517.62.430.04.231.74.015.51.618.31.537.91.929.60.6
heterogeneous7.31.00.0.1.00.71.70.71.30.51.91.010.51.43.81.04.41.31.91.40.70.74.30.95.50.92.40.64.10.3
normal, loose34.71.843.03.441.33.344.52.751.52.231.63.428.62.135.42.632.42.928.84.428.13.923.71.926.01.822.81.733.20.6
open, scattered20.91.59.92.018.62.68.41.54.90.921.53.017.01.710.61.727.82.816.63.515.93.135.32.126.41.820.51.619.00.5
crowded, clustered normal2.90.60.40.43.01.12.00.81.80.69.92.112.81.58.81.611.02.016.73.516.73.216.71.720.91.613.51.49.80.4
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, 11.07.2020 #853166/319497
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1983/85
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a3.60.86.61.85.01.53.81.13.20.812.03.84.81.49.62.312.63.413.64.88.94.39.62.53.41.16.92.45.40.4
crowded26.51.839.53.534.23.240.92.837.72.126.75.022.42.730.93.513.03.417.74.724.96.614.53.018.52.329.84.229.40.8
heterogeneous8.11.10.0.1.00.71.00.61.20.52.72.07.91.73.01.32.11.52.02.02.22.20.70.76.71.51.81.33.60.3
normal, loose34.42.043.63.537.93.444.82.851.22.232.45.530.23.031.53.525.44.424.66.013.55.316.73.226.52.724.14.035.90.9
open, scattered23.71.79.92.118.62.77.91.55.11.018.24.621.12.614.82.737.54.925.75.722.36.341.54.224.32.625.74.018.20.7
crowded, clustered normal3.70.80.50.53.31.21.70.71.60.58.03.213.72.210.32.49.43.016.45.028.17.217.13.320.72.511.83.07.40.5
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...13.17.10.0.0.0.5.93.34.14.09.85.53.51.73.41.90.0.3.70.9
crowded25.89.1....100.0...32.510.030.38.958.613.222.85.840.49.539.18.914.03.117.14.021.25.223.72.0
heterogeneous8.65.9....0.0...3.73.67.55.10.0.5.93.33.73.60.0.5.02.03.21.84.82.74.40.9
normal, loose44.210.4....0.0...33.39.920.77.627.511.831.26.426.38.629.78.132.54.332.25.021.05.230.02.1
open, scattered16.97.7....0.0...8.15.626.98.20.0.26.36.17.75.38.84.928.74.219.74.322.55.320.81.9
crowded, clustered normal4.64.5....0.0...9.46.314.56.713.99.17.83.817.87.312.66.016.33.424.44.530.55.817.41.7
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 perimetern/a7.82.39.66.43.73.64.12.93.93.87.32.74.91.45.11.73.51.70.0.7.73.44.61.33.61.13.50.84.60.5
crowded42.14.146.211.27.45.032.96.830.88.726.24.330.13.237.43.719.73.634.97.930.35.516.52.217.72.340.72.229.71.0
heterogeneous3.51.50.0.0.0.6.23.53.93.80.80.813.42.44.61.65.82.20.0.1.41.45.51.45.31.32.10.64.70.5
normal, loose32.63.934.710.764.29.642.07.051.19.529.04.527.53.138.73.837.64.440.08.034.75.722.92.523.52.522.81.928.91.0
open, scattered12.72.89.66.424.88.810.64.53.33.225.84.412.32.27.52.020.63.710.85.114.84.434.62.930.42.718.91.820.30.9
crowded, clustered normal1.30.90.0.0.0.4.12.97.14.910.93.111.92.26.82.012.83.014.35.711.13.715.92.219.42.312.11.511.90.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a4.30.76.81.74.81.43.81.03.20.89.72.14.50.97.11.47.21.67.12.48.52.45.71.03.50.73.80.75.00.3
crowded29.41.640.13.331.33.040.02.637.32.127.13.026.22.035.02.517.92.328.34.030.73.815.41.518.01.536.91.829.00.6
heterogeneous7.30.90.0.0.90.61.70.71.30.51.80.910.31.43.61.04.51.31.81.21.30.94.10.95.60.92.30.64.10.3
normal, loose34.31.742.83.440.73.244.32.651.22.130.83.328.52.134.72.632.02.829.84.227.33.723.41.826.01.722.81.632.90.6
open, scattered21.41.59.92.019.32.68.21.45.00.921.03.017.51.710.81.627.82.716.93.315.73.035.12.126.31.720.41.619.20.5
crowded, clustered normal3.30.70.40.42.91.12.00.81.90.69.62.112.91.58.71.510.61.916.13.316.53.116.31.620.61.613.81.39.80.4
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, 11.07.2020 #853167/319498
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI1
state1983/85
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a3.10.54.91.14.51.03.60.83.40.612.72.76.21.19.31.69.22.114.23.614.23.711.21.84.00.86.21.65.40.3
crowded27.81.337.82.432.12.239.22.038.41.526.03.623.51.931.52.512.72.417.23.828.74.613.12.017.21.630.53.029.30.6
heterogeneous7.70.80.50.31.20.51.30.50.70.31.30.97.81.22.20.83.21.33.31.91.11.11.40.75.61.01.30.83.50.2
normal, loose33.11.445.22.441.12.446.02.051.11.532.23.831.22.133.92.629.43.322.44.312.93.519.82.325.81.920.82.736.30.6
open, scattered24.11.29.51.417.81.88.31.15.40.718.33.219.01.715.12.036.93.527.94.624.24.438.72.828.41.926.62.918.60.5
crowded, clustered normal4.20.62.10.73.30.91.60.51.00.39.52.412.31.48.01.58.72.115.03.718.94.115.82.118.91.714.62.37.00.3
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 perimetern/a0.0.....0.0...8.84.20.0.0.0.5.52.23.82.612.24.34.31.33.21.31.41.03.90.6
crowded30.97.4....48.335.3..26.56.531.36.544.910.018.43.733.86.342.76.512.42.121.93.118.03.222.21.3
heterogeneous7.74.3....0.0...1.91.93.92.70.0.2.81.63.62.50.0.5.31.43.81.42.71.43.60.6
normal, loose43.47.9....51.735.3..40.27.223.05.935.39.533.04.526.86.023.45.525.32.729.43.424.83.628.51.5
open, scattered15.45.8....0.0...14.15.326.56.111.86.432.14.518.15.28.33.635.23.021.53.026.93.725.41.4
crowded, clustered normal2.62.5....0.0...8.64.115.35.08.05.48.32.713.94.613.54.517.42.420.02.926.23.616.31.2
total100.0.....100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a5.51.45.23.68.03.94.02.02.02.05.01.54.51.07.01.44.31.35.32.65.72.15.01.04.00.82.50.54.40.3
crowded42.53.139.58.022.25.945.65.048.87.026.82.929.02.236.22.622.02.742.65.742.44.317.11.719.91.741.51.631.70.7
heterogeneous3.61.20.0.0.0.3.01.72.02.02.00.914.91.74.11.14.41.41.61.61.51.15.61.15.91.02.40.54.90.3
normal, loose31.52.936.87.840.47.036.44.839.46.935.83.227.42.235.22.635.73.229.75.328.03.924.52.024.11.822.61.428.10.7
open, scattered15.92.318.56.329.36.57.12.63.92.719.82.613.61.710.11.620.82.68.03.212.42.932.62.127.91.918.91.319.70.6
crowded, clustered normal1.10.60.0.0.0.3.91.93.92.710.52.010.41.57.41.412.82.212.83.710.12.615.11.618.21.612.01.111.30.5
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/a3.40.54.91.04.91.03.60.73.30.58.21.35.10.77.91.06.31.18.61.99.91.86.60.83.90.53.00.54.90.2
crowded30.41.137.92.331.12.140.21.838.91.526.52.126.31.434.31.717.91.730.03.037.92.814.81.119.11.137.01.329.50.4
heterogeneous7.00.70.40.31.10.51.50.50.70.31.80.610.71.03.00.73.60.82.81.11.10.64.30.65.50.62.30.44.00.2
normal, loose33.11.244.52.341.12.344.71.950.61.535.02.329.11.434.61.832.92.026.03.022.02.523.41.325.61.222.61.132.70.4
open, scattered22.51.110.31.418.91.88.11.05.30.718.61.917.11.212.61.228.91.918.62.515.52.135.01.527.21.221.11.119.60.4
crowded, clustered normal3.60.52.00.73.00.81.90.51.20.39.91.511.71.07.71.010.41.314.02.313.72.015.91.118.71.114.00.99.40.3
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.
© WSL, Swiss National Forest Inventory, 11.07.2020 #853168/319499
NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1993/95
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.30.0.0.0.1.00.60.40.30.0.1.60.85.01.73.41.96.43.60.0.2.61.50.80.50.0.1.00.2
crowded20.51.727.03.243.93.528.02.629.92.026.74.818.12.533.93.721.94.421.95.525.66.717.53.410.11.925.44.425.00.8
normal34.62.052.93.532.93.342.32.842.02.221.64.917.22.524.23.422.34.514.35.18.54.810.72.815.92.320.84.031.30.8
loose20.51.714.42.511.22.216.52.118.61.717.14.624.52.814.92.86.72.66.13.419.56.717.83.524.02.710.93.117.80.7
open13.71.44.01.48.01.98.81.68.11.215.04.319.72.59.82.313.23.720.15.79.15.022.13.823.42.716.83.712.80.6
scattered4.50.91.00.73.11.21.00.60.60.38.03.45.51.43.21.416.44.010.24.425.17.017.83.514.62.210.63.05.60.4
grouped crowded1.10.40.0.1.00.70.30.30.0.3.72.23.11.11.81.110.43.38.54.14.73.22.51.45.91.51.91.32.00.3
grouped normal2.10.60.60.60.0.0.0.0.20.26.83.05.11.43.01.35.72.510.64.45.23.67.52.43.61.29.72.92.60.3
heterogeneous2.50.70.0.0.0.2.00.80.40.31.11.15.21.54.31.60.0.2.01.92.52.51.71.21.60.83.81.91.90.3
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.
inside perimetern/a0.0.........0.0.3.33.30.0.2.02.08.45.78.94.92.71.50.0.0.0.2.20.7
crowded13.17.1........32.510.337.19.356.613.423.66.024.78.725.88.015.83.312.63.610.24.019.71.9
normal44.010.4........26.69.57.55.227.611.925.56.339.49.827.07.919.43.619.44.214.74.522.21.9
loose25.69.1........19.08.625.78.40.0.20.15.711.56.314.06.621.23.821.44.516.64.819.21.9
open8.75.9........11.66.316.26.615.810.310.04.23.83.87.25.023.13.925.44.724.55.518.21.8
scattered8.65.9........6.56.20.0.0.0.6.43.67.75.25.73.96.02.29.53.29.73.86.91.2
grouped crowded0.0.........0.0.3.53.40.0.6.23.50.0.2.82.75.22.15.72.54.92.84.10.9
grouped normal0.0.........0.0.6.74.60.0.2.02.04.44.35.73.93.41.73.62.18.13.53.90.9
heterogeneous0.0.........3.93.80.0.0.0.4.22.90.0.2.92.93.41.72.41.711.34.03.70.9
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.0.0.0.0.0.1.41.40.90.60.0.1.81.33.23.24.22.31.20.73.41.10.90.41.30.3
crowded32.14.043.911.141.110.132.56.716.76.926.04.422.63.036.33.731.74.332.28.028.55.620.82.510.61.936.72.227.61.0
normal40.04.135.010.745.910.235.16.958.79.330.34.726.93.231.33.719.73.735.58.427.65.320.82.517.92.321.31.925.71.0
loose15.63.111.27.54.44.322.15.918.17.316.73.720.12.814.02.712.83.117.46.56.02.915.72.222.02.512.61.615.80.8
open7.32.24.84.74.64.58.13.96.54.512.13.417.52.69.82.311.02.911.75.59.43.718.92.425.42.614.81.615.10.8
scattered1.51.00.0.4.03.90.0.0.0.3.42.01.90.94.11.69.72.80.0.12.44.18.91.811.11.95.61.15.90.5
grouped crowded1.41.00.0.0.0.0.0.0.0.4.62.11.80.91.81.17.02.40.0.4.22.35.41.43.41.12.60.73.10.4
grouped normal0.70.70.0.0.0.0.0.0.0.2.71.62.61.10.0.3.61.80.0.1.51.53.81.25.21.33.40.82.80.4
heterogeneous1.41.05.15.00.0.2.12.10.0.2.71.95.71.72.61.32.71.60.0.6.23.14.61.31.10.62.10.72.80.4
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/a0.30.20.0.0.0.0.90.50.40.30.70.71.40.52.40.82.41.05.82.34.11.61.90.61.80.50.70.31.20.2
crowded22.41.528.53.143.63.328.62.429.21.927.03.121.21.935.92.626.72.725.83.927.03.818.81.710.71.232.31.925.50.6
normal35.91.751.33.434.23.241.32.642.82.126.53.220.91.927.72.421.72.626.94.322.03.517.91.717.31.520.61.628.50.6
loose19.81.514.12.310.52.017.32.018.51.717.12.722.62.013.91.912.12.010.92.911.82.917.51.722.81.712.71.317.20.5
open12.41.24.11.37.61.78.71.58.01.113.22.518.51.710.01.611.62.013.73.38.82.620.61.824.61.716.11.514.10.5
scattered4.10.70.90.63.21.20.90.50.50.35.51.83.60.83.51.011.42.06.42.314.42.910.41.412.31.36.81.05.80.3
grouped crowded1.10.40.0.0.90.60.30.30.0.3.81.32.60.71.80.78.01.73.81.94.01.54.70.94.70.92.70.62.60.2
grouped normal1.80.50.60.60.0.0.0.0.20.24.01.44.10.91.50.64.01.35.82.33.51.54.60.94.30.84.90.92.80.2
heterogeneous2.20.50.50.50.0.2.10.80.30.22.21.15.11.03.31.02.10.90.90.94.41.83.60.81.50.53.30.72.40.2
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, 11.07.2020 #853169/319500
NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1993/95
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.30.0.0.0.1.00.60.40.30.0.1.50.74.81.62.91.65.43.00.0.2.21.31.00.60.0.1.00.2
crowded20.51.627.03.144.13.328.22.630.22.025.44.518.52.533.13.621.44.023.75.420.05.416.23.010.41.822.33.724.60.8
normal33.61.952.63.533.23.241.92.841.52.122.44.716.42.426.73.421.64.115.74.810.84.612.62.815.62.120.13.530.50.8
loose20.01.614.82.510.52.116.32.118.61.715.64.223.52.714.32.76.62.45.12.917.15.615.93.122.82.410.22.717.20.7
open13.51.44.01.47.91.89.01.68.11.213.74.018.82.49.32.213.13.416.84.911.04.720.23.421.02.417.03.312.50.6
scattered5.30.91.00.72.91.21.00.60.50.311.33.75.51.43.01.315.93.610.24.025.76.220.73.416.52.115.23.16.60.4
grouped crowded1.90.60.0.1.40.80.60.40.20.23.42.02.91.01.81.012.73.37.13.47.63.62.81.47.11.53.01.52.60.3
grouped normal2.60.70.60.60.0.0.0.0.20.27.22.97.81.62.91.35.82.312.54.45.93.37.92.34.01.19.22.53.20.3
heterogeneous2.40.60.0.0.0.2.00.80.30.21.01.05.21.44.11.50.0.3.42.41.91.91.41.01.70.83.01.51.80.2
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.........0.0.3.33.30.0.1.91.97.55.18.74.82.61.50.0.0.0.2.10.7
crowded13.17.1........31.09.937.19.356.613.422.85.825.88.425.17.915.43.313.23.69.63.719.41.8
normal44.010.4........25.49.17.55.227.611.926.26.242.19.426.37.718.83.519.64.213.84.322.11.9
loose25.69.1........18.28.225.78.40.0.19.35.510.35.713.76.421.53.720.54.317.14.719.01.8
open8.75.9........11.16.116.26.615.810.311.64.43.43.47.04.824.23.924.24.524.55.318.31.8
scattered8.65.9........6.25.90.0.0.0.6.13.46.84.75.63.85.92.211.43.49.13.57.01.2
grouped crowded0.0.........4.44.33.53.40.0.6.03.40.0.2.72.75.12.05.42.46.23.04.40.9
grouped normal0.0.........0.0.6.74.60.0.1.91.94.03.98.04.53.31.63.52.09.13.54.10.9
heterogeneous0.0.........3.73.60.0.0.0.4.12.80.0.2.92.83.31.62.31.610.63.83.50.8
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.0.0.0.0.0.1.31.30.90.60.60.61.71.22.82.83.92.21.50.83.11.00.80.41.30.3
crowded32.63.943.911.139.69.832.56.716.76.925.04.321.72.935.23.631.64.233.47.627.75.320.42.410.01.735.22.126.81.0
normal38.94.135.010.747.910.135.16.958.79.330.04.627.63.131.63.619.63.633.47.726.65.020.42.417.82.221.31.925.51.0
loose15.83.011.27.54.24.122.15.918.17.316.13.619.72.814.82.713.83.117.66.16.93.015.52.221.22.412.11.515.60.8
open7.12.24.84.74.44.38.13.96.54.512.63.417.72.69.22.211.32.910.24.89.93.619.32.424.42.514.71.615.00.8
scattered1.41.00.0.3.93.80.0.0.0.3.31.91.80.93.91.59.22.60.0.11.43.88.91.712.81.97.11.16.50.5
grouped crowded1.41.00.0.0.0.0.0.0.0.6.42.41.70.92.21.16.62.30.0.5.32.65.61.44.81.23.00.83.50.4
grouped normal1.41.00.0.0.0.0.0.0.0.2.61.52.91.10.0.3.41.72.52.52.61.94.01.25.01.23.60.83.00.4
heterogeneous1.41.05.15.00.0.2.12.10.0.2.61.86.01.72.41.22.61.50.0.5.72.94.41.21.00.62.20.72.80.4
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/a0.30.20.0.0.0.0.80.50.40.30.70.61.30.52.60.82.20.95.02.03.71.51.90.61.80.50.60.31.20.1
crowded22.51.528.53.043.63.228.82.429.51.925.83.020.91.835.02.526.22.627.23.824.73.418.11.610.51.230.41.724.90.6
normal34.81.751.03.334.73.141.02.642.32.126.53.120.71.829.12.421.62.527.14.021.53.317.91.617.11.420.41.528.00.6
loose19.41.414.52.49.91.917.12.018.61.716.12.622.01.914.01.812.22.010.22.711.72.716.91.621.81.612.21.316.70.5
open12.11.24.01.37.61.78.91.58.01.112.92.418.11.79.51.512.02.011.82.99.62.520.61.822.91.616.11.413.90.5
scattered4.70.80.90.63.01.10.80.50.50.36.81.93.60.83.31.011.11.96.32.114.72.811.51.414.21.38.81.16.60.3
grouped crowded1.70.50.0.1.20.70.50.40.20.25.01.52.40.71.90.78.81.73.31.65.51.74.70.95.90.93.30.73.10.2
grouped normal2.30.50.60.60.0.0.0.0.20.24.21.45.61.01.40.64.01.27.52.34.91.74.90.94.40.85.10.83.20.2
heterogeneous2.10.50.50.50.0.2.00.80.30.22.11.15.31.03.20.91.90.81.61.13.91.63.30.81.50.53.10.72.30.2
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.
© WSL, Swiss National Forest Inventory, 11.07.2020 #853170/319501
NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI2
state1993/95
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.30.20.0.0.0.0.90.50.40.30.0.1.70.74.21.42.71.55.92.91.61.61.91.11.20.60.0.1.00.2
crowded21.21.528.83.044.53.228.82.431.51.925.44.218.42.332.63.420.13.822.54.819.85.218.03.010.81.721.53.425.10.7
normal33.11.852.43.332.23.041.82.640.82.021.34.318.22.325.93.223.04.115.64.311.14.312.82.616.52.018.23.230.40.8
loose20.01.513.82.311.62.015.81.918.21.614.23.722.42.415.32.66.22.34.02.315.05.015.72.822.72.311.82.717.00.6
open13.21.33.61.37.51.79.01.57.91.115.03.818.52.28.62.013.23.315.24.212.54.519.43.120.52.215.73.012.20.5
scattered5.30.90.90.63.01.11.10.60.50.311.73.46.01.44.21.516.73.611.33.824.25.719.93.116.02.015.43.06.70.4
grouped crowded1.70.50.0.1.20.70.50.40.20.24.12.02.50.92.11.011.83.15.72.86.83.33.71.57.21.44.61.72.60.3
grouped normal2.90.70.60.60.0.0.0.0.20.26.22.57.21.52.51.15.42.215.74.37.43.67.42.03.61.09.52.43.20.3
heterogeneous2.30.60.0.0.0.2.00.80.30.22.01.55.11.34.51.51.01.04.12.31.61.61.20.91.50.73.31.51.90.2
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.........0.0.3.23.16.46.21.81.86.54.47.94.42.31.30.0.0.0.2.10.6
crowded12.16.6........31.69.436.18.743.311.724.15.625.17.625.27.516.53.212.03.310.03.619.31.7
normal44.210.0........23.88.610.45.626.610.325.75.939.08.630.47.821.33.522.04.212.23.823.11.8
loose27.68.9........21.78.623.17.70.0.17.65.111.55.412.35.820.33.418.84.017.94.518.31.7
open8.05.4........10.55.714.76.117.89.410.54.16.24.36.74.622.83.625.34.424.45.018.11.7
scattered8.25.5........5.04.80.0.0.0.7.53.65.63.95.13.55.21.911.63.38.13.26.71.1
grouped crowded0.0.........4.14.03.23.20.0.5.43.00.0.2.62.65.21.95.02.25.62.74.20.9
grouped normal0.0.........0.0.9.45.25.95.71.81.86.14.27.44.13.61.63.21.810.93.64.80.9
heterogeneous0.0.........3.53.40.0.0.0.5.53.10.0.2.52.42.91.42.11.510.93.63.50.8
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.0.0.0.0.0.1.01.00.80.61.00.71.51.12.42.46.32.71.70.72.70.90.70.41.40.2
crowded33.13.844.110.646.19.230.96.218.36.824.74.022.02.736.33.432.74.041.57.524.74.820.62.39.81.635.62.027.10.9
normal38.03.936.110.243.89.138.46.655.78.929.94.228.22.931.23.320.23.429.47.025.54.720.22.319.32.121.11.725.40.9
loose15.92.910.97.33.13.119.75.316.66.816.03.318.62.514.72.513.83.015.45.46.02.615.92.120.32.212.01.415.20.7
open7.82.24.34.23.73.69.13.99.45.213.03.117.52.48.41.911.62.89.14.39.73.319.52.324.22.315.31.515.20.7
scattered1.30.90.0.3.33.30.0.0.0.4.62.01.60.83.91.48.22.40.0.11.23.58.51.613.41.96.91.16.50.5
grouped crowded1.30.90.0.0.0.0.0.0.0.5.72.12.81.11.90.96.72.10.0.5.92.65.91.34.51.12.80.73.60.4
grouped normal1.30.90.0.0.0.0.0.0.0.2.41.42.71.00.0.3.01.52.32.35.62.43.51.05.01.13.60.83.00.3
heterogeneous1.30.94.64.50.0.1.91.90.0.2.81.65.71.52.61.12.31.30.0.5.02.54.21.10.80.52.00.62.60.3
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/a0.30.20.0.0.0.0.70.40.40.30.50.51.40.52.80.82.00.85.01.85.11.71.90.61.70.50.50.31.20.1
crowded23.11.430.12.944.73.029.12.230.81.825.72.820.91.734.82.326.52.528.73.623.23.219.01.610.51.130.51.625.40.5
normal34.31.651.03.233.52.941.42.441.62.025.82.922.11.728.52.222.22.424.83.621.83.118.51.618.41.419.71.428.00.5
loose19.51.413.52.210.61.816.31.818.21.515.92.420.81.714.41.711.71.89.12.310.22.416.81.521.21.512.51.216.40.5
open12.11.13.61.27.11.59.01.48.01.113.52.217.91.68.91.412.01.911.42.610.02.320.21.622.71.516.21.313.80.4
scattered4.70.70.80.63.01.01.00.50.50.37.51.73.80.83.91.011.11.86.72.014.22.610.91.314.31.28.61.06.60.3
grouped crowded1.60.40.0.1.10.60.50.30.20.24.91.42.70.71.90.78.31.62.71.45.51.75.10.95.70.83.40.63.10.2
grouped normal2.50.50.60.60.0.0.0.0.10.13.71.25.40.91.50.63.71.19.62.46.61.84.60.84.20.75.40.83.20.2
heterogeneous2.00.50.40.40.0.2.00.70.30.22.61.05.10.93.40.92.40.92.01.13.41.43.10.71.30.43.10.62.30.2
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, 11.07.2020 #853171/319502
NFI1
forest area
avalanches SilvaProtect · crown closure
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
state1983/85
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %±
n/an/a3.90.73.30.66.01.16.01.05.02.24.50.4
crowded30.31.638.31.526.82.017.41.632.14.630.10.8
heterogeneous6.30.91.10.35.61.13.60.82.01.43.70.4
normal, loose37.11.747.01.631.62.123.51.824.74.336.60.9
open, scattered20.01.48.40.918.21.831.02.025.54.317.90.7
crowded, clustered normal2.50.62.00.411.71.518.51.710.63.07.10.5
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.3.12.23.91.10.0.3.10.8
crowded25.89.10.0.37.06.121.22.321.55.323.72.0
heterogeneous8.75.90.0.4.52.54.21.14.92.84.61.0
normal, loose43.910.40.0.27.35.531.42.621.45.330.22.1
open, scattered17.17.80.0.14.94.422.12.422.95.420.91.9
crowded, clustered normal4.54.40.0.13.34.317.22.129.35.817.61.8
total100.0.0.0.100.0.100.0.100.0.100.0.
outside perimetern/a8.22.24.02.05.11.03.50.72.80.84.10.5
crowded43.13.926.74.432.52.219.81.441.32.330.21.0
heterogeneous2.51.24.01.97.61.24.90.82.10.74.70.5
normal, loose33.23.749.55.031.92.227.21.622.52.028.91.0
open, scattered11.92.611.83.212.91.527.81.619.21.820.00.9
crowded, clustered normal1.20.84.01.99.91.416.81.412.11.512.10.7
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a4.50.73.30.55.40.74.50.52.90.74.20.3
crowded32.31.537.31.430.01.419.21.037.91.929.60.6
heterogeneous5.70.71.30.36.50.84.30.52.40.64.10.3
normal, loose36.61.647.21.531.51.526.71.122.81.733.30.6
open, scattered18.61.28.70.815.61.127.81.120.51.619.00.5
crowded, clustered normal2.30.52.10.411.01.017.40.913.51.49.80.4
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853172/319503
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1983/85
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %±
n/an/a4.30.73.70.67.31.27.51.16.92.45.30.4
crowded29.71.638.11.526.02.017.11.529.84.229.40.8
heterogeneous6.10.91.00.35.51.03.80.81.81.33.70.3
normal, loose36.71.746.61.531.02.123.11.724.14.036.00.9
open, scattered20.31.48.60.918.41.730.41.925.74.018.20.7
crowded, clustered normal2.90.62.00.411.81.518.11.611.83.07.40.5
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.4.62.64.51.20.0.3.70.9
crowded25.89.1100.0.36.46.021.02.321.25.223.62.0
heterogeneous8.75.90.0.4.42.54.11.14.82.74.51.0
normal, loose43.910.40.0.26.85.531.32.621.05.229.92.1
open, scattered17.17.80.0.14.74.322.12.322.55.320.91.9
crowded, clustered normal4.54.40.0.13.14.317.12.130.55.817.61.8
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a8.12.14.01.95.31.04.00.73.50.84.50.5
crowded42.53.926.44.432.12.119.61.440.72.229.81.0
heterogeneous3.11.43.91.97.61.24.80.82.10.64.70.5
normal, loose32.83.750.05.031.82.127.41.622.81.929.01.0
open, scattered12.32.611.73.213.31.527.81.618.91.820.10.9
crowded, clustered normal1.20.83.91.99.91.416.31.312.11.511.90.7
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a4.80.73.70.66.20.75.40.53.80.74.90.3
crowded31.71.437.11.429.51.418.90.936.91.829.10.6
heterogeneous5.70.71.30.36.40.84.30.52.30.64.10.3
normal, loose36.21.546.91.531.11.426.61.122.81.632.90.6
open, scattered18.91.28.90.815.81.127.71.120.41.619.10.5
crowded, clustered normal2.60.52.20.411.01.017.10.913.81.39.90.4
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853173/319504
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI1
state1983/85
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %±
n/an/a3.60.53.70.48.10.98.00.86.21.65.30.3
crowded30.31.137.41.026.61.416.41.130.53.029.30.6
heterogeneous5.80.61.00.25.00.73.70.51.30.83.50.2
normal, loose36.21.247.61.132.21.523.61.220.82.736.30.6
open, scattered20.41.08.80.617.61.232.01.326.62.918.60.5
crowded, clustered normal3.70.51.70.310.51.016.31.114.62.37.00.3
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.3.31.64.90.81.41.03.90.6
crowded30.87.450.035.432.24.220.51.618.03.222.11.3
heterogeneous7.74.30.0.2.41.43.80.82.71.43.60.6
normal, loose43.57.950.035.432.14.227.71.724.83.628.51.5
open, scattered15.45.80.0.18.43.527.01.726.93.725.41.4
crowded, clustered normal2.62.50.0.11.72.916.11.426.23.616.41.2
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a5.41.34.51.55.50.74.60.52.50.54.40.3
crowded42.02.940.73.531.21.522.61.141.51.631.70.7
heterogeneous3.11.02.01.08.10.94.90.62.40.54.90.3
normal, loose32.22.738.43.432.11.526.71.222.61.428.10.7
open, scattered16.32.111.52.313.71.125.81.118.91.319.60.6
crowded, clustered normal1.00.63.01.29.40.915.50.912.01.111.30.5
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a3.80.43.80.46.60.55.90.43.00.54.90.2
crowded32.11.037.71.029.11.019.90.737.01.329.50.4
heterogeneous5.50.51.00.26.30.54.30.42.30.44.00.2
normal, loose35.81.146.81.032.21.025.80.822.61.132.70.4
open, scattered19.70.99.00.615.80.828.30.821.11.119.50.4
crowded, clustered normal3.20.41.80.310.00.615.90.614.00.99.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853174/319505
NFI2
forest area
avalanches SilvaProtect · crown closure
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
state1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %±
n/an/a0.30.20.50.22.50.72.00.60.0.1.00.2
crowded22.01.532.11.524.72.015.91.525.44.424.90.8
normal39.31.740.31.520.21.814.81.520.84.031.20.8
loose19.11.416.51.219.81.818.11.610.93.117.90.7
open11.31.18.30.815.81.720.11.716.83.712.80.6
scattered3.60.71.20.35.21.016.01.610.63.05.60.4
grouped crowded0.80.30.30.22.80.76.01.01.91.32.00.3
grouped normal1.70.50.10.14.81.05.51.09.72.92.60.3
heterogeneous1.90.50.80.34.20.91.40.53.81.91.90.3
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.1.71.72.91.00.0.2.20.7
crowded13.07.00.0.39.46.117.92.210.24.019.61.9
normal43.810.40.0.19.05.022.92.414.74.522.42.0
loose25.89.10.0.17.54.819.32.216.64.819.01.8
open8.75.90.0.14.64.318.42.224.55.518.21.8
scattered8.75.90.0.1.71.77.21.59.73.86.91.2
grouped crowded0.0.0.0.1.71.74.91.24.92.84.20.9
grouped normal0.0.0.0.3.12.23.61.18.13.53.90.9
heterogeneous0.0.0.0.1.41.42.91.011.34.03.70.9
total100.0.0.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.70.42.50.60.90.41.30.3
crowded33.73.730.64.628.32.120.11.436.72.227.71.0
normal39.43.943.94.929.02.120.81.521.31.925.61.0
loose14.92.816.73.717.51.816.71.412.61.615.80.8
open7.02.06.92.513.61.618.91.414.81.615.00.8
scattered1.30.91.01.02.90.89.71.15.61.15.90.5
grouped crowded1.30.90.0.2.40.74.60.82.60.73.10.4
grouped normal0.60.60.0.1.80.64.00.73.40.82.80.4
heterogeneous1.91.11.01.03.70.92.90.62.10.72.80.4
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.20.20.50.21.60.42.40.40.70.31.20.2
crowded23.71.431.91.427.31.418.20.932.31.925.50.6
normal39.51.640.61.524.21.319.11.020.61.628.40.6
loose18.61.316.61.118.61.217.70.912.71.317.20.5
open10.51.08.20.814.71.119.21.016.11.514.10.5
scattered3.40.61.10.33.90.611.40.86.81.05.80.3
grouped crowded0.90.30.30.22.60.55.10.62.70.62.60.2
grouped normal1.50.40.10.13.30.64.40.54.90.92.80.2
heterogeneous1.80.40.80.33.80.62.40.43.30.72.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853175/319506
NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %±
n/an/a0.30.20.50.22.40.71.90.50.0.1.00.2
crowded22.01.432.41.424.41.915.41.422.33.724.50.8
normal38.41.739.91.520.61.815.31.420.13.530.40.8
loose18.81.416.31.119.01.716.91.510.22.717.20.7
open11.11.18.30.815.01.618.41.517.03.312.60.6
scattered4.30.71.10.35.61.017.51.515.23.16.60.4
grouped crowded1.40.40.60.22.60.77.11.03.01.52.60.3
grouped normal2.10.50.10.16.21.16.00.99.22.53.20.3
heterogeneous1.80.50.80.34.10.91.50.53.01.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.1.71.72.80.90.0.2.10.7
crowded13.07.00.0.38.86.117.82.19.63.719.31.8
normal43.810.40.0.18.74.923.22.313.84.322.41.9
loose25.89.10.0.17.24.718.82.217.14.718.71.8
open8.75.90.0.14.34.218.62.224.55.318.31.8
scattered8.75.90.0.1.71.77.61.59.13.57.01.2
grouped crowded0.0.0.0.3.22.24.71.26.23.04.50.9
grouped normal0.0.0.0.3.02.13.71.19.13.54.20.9
heterogeneous0.0.0.0.1.41.42.80.910.63.83.50.8
total100.0.0.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.90.42.40.50.80.41.30.3
crowded34.13.730.34.527.42.019.51.435.22.126.91.0
normal38.43.844.44.929.42.120.51.421.31.925.41.0
loose15.12.816.53.717.41.716.61.312.11.515.60.8
open6.82.06.82.513.61.518.71.414.71.615.00.8
scattered1.20.91.01.02.70.710.21.17.11.16.50.5
grouped crowded1.20.90.0.2.90.75.20.83.00.83.50.4
grouped normal1.20.80.0.1.90.64.20.73.60.83.00.4
heterogeneous1.81.11.01.03.80.92.70.62.20.72.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.20.20.40.21.60.42.30.40.60.31.20.1
crowded23.71.332.21.426.61.317.70.930.41.724.90.6
normal38.51.540.31.424.61.319.10.920.41.528.00.6
loose18.31.216.31.118.21.217.10.912.21.316.80.5
open10.31.08.20.814.31.118.60.916.11.413.90.5
scattered3.90.61.10.34.10.612.40.88.81.16.60.3
grouped crowded1.40.40.50.22.80.55.80.63.30.73.10.2
grouped normal1.90.40.10.14.00.64.80.55.10.83.20.2
heterogeneous1.70.40.80.33.80.62.30.43.10.72.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853176/319507
NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI2
state1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure %± %± %± %± %± %±
n/an/a0.20.20.40.22.20.62.10.50.0.1.00.2
crowded22.91.433.31.424.31.815.61.321.53.425.00.7
normal38.01.639.41.421.11.716.01.318.23.230.30.8
loose18.51.316.21.118.61.616.41.411.82.717.00.6
open10.81.08.20.814.81.518.01.415.73.012.30.5
scattered4.20.71.20.36.31.017.21.415.43.06.70.4
grouped crowded1.30.40.50.22.70.77.00.94.61.72.60.3
grouped normal2.30.50.10.15.60.96.10.99.52.43.20.3
heterogeneous1.70.40.80.34.50.91.60.53.31.51.90.2
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.3.02.12.50.80.0.2.10.6
crowded12.06.50.0.36.35.618.22.010.03.619.31.7
normal44.110.00.0.19.14.624.82.312.23.823.21.8
loose27.89.00.0.16.54.417.72.017.94.518.01.7
open7.95.40.0.14.14.018.42.024.45.018.11.7
scattered8.25.60.0.1.51.57.41.48.13.26.71.1
grouped crowded0.0.0.0.2.82.04.51.15.62.74.20.9
grouped normal0.0.0.0.5.52.73.91.010.93.64.90.9
heterogeneous0.0.0.0.1.21.22.80.910.93.63.50.8
total100.0.0.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.90.42.50.50.70.41.40.2
crowded34.63.631.74.327.91.919.71.335.62.027.20.9
normal37.73.644.14.629.51.920.81.321.11.725.40.9
loose15.12.714.73.316.91.616.31.212.01.415.20.7
open7.42.07.72.513.21.418.71.315.31.515.20.7
scattered1.10.80.90.93.00.710.11.06.91.16.50.5
grouped crowded1.20.80.0.3.10.75.20.72.80.73.60.4
grouped normal1.10.80.0.1.70.54.20.73.60.83.00.4
heterogeneous1.71.00.90.93.80.82.50.52.00.62.50.3
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.20.10.40.21.70.42.30.30.50.31.20.1
crowded24.51.333.21.326.61.217.90.830.51.625.30.5
normal38.11.439.81.324.81.219.70.919.71.427.90.5
loose18.21.216.01.017.71.116.60.812.51.216.50.5
open10.20.98.10.714.01.018.40.916.21.313.80.4
scattered3.80.61.10.34.50.612.20.78.61.06.60.3
grouped crowded1.20.30.50.22.90.55.70.53.40.63.10.2
grouped normal2.10.40.10.13.80.54.90.55.40.83.30.2
heterogeneous1.70.40.80.24.00.62.20.33.10.62.30.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853177/319508
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1983/85
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantoncrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a2.2300.0.0.0.2.230
crowded18.880.0.0.0.18.88
heterogeneous0.0.0.0.0.0.0.0.
normal, loose23.170.0.0.0.23.17
open, scattered1.8330.0.0.0.1.833
crowded, clustered normal0.8500.0.0.0.0.850
total46.720.0.0.0.46.72
AIn/a0.0.0.0.0.21000.2100
crowded1.4350.4681.2343.018
heterogeneous0.0.0.0.0.0.0.0.
normal, loose0.6570.21000.6581.336
open, scattered0.4710.0.0.21000.657
crowded, clustered normal0.0.0.0.0.0.0.0.
total2.3250.6572.2245.19
ARn/a0.21000.0.0.0.0.2100
crowded2.8230.21001.8304.714
heterogeneous0.21000.0.0.0.0.2100
normal, loose1.3360.0.0.9382.326
open, scattered0.4710.0.0.0.0.471
crowded, clustered normal0.4730.0.0.0.0.473
total5.3130.21002.7228.16
BEn/a4.8200.6583.2258.615
crowded26.582.82717.41046.76
heterogeneous3.4241.2416.71711.213
normal, loose29.182.92620.7952.85
open, scattered14.9113.62310.61329.18
crowded, clustered normal4.8201.6356.31712.712
total83.5412.71264.94161.11
BL/BSn/a1.1450.0.0.4701.437
crowded3.9210.0.1.4405.318
heterogeneous0.0.0.0.0.0.0.0.
normal, loose7.2140.0.1.7349.012
open, scattered3.5220.0.0.4703.821
crowded, clustered normal0.0.0.0.0.0.0.0.
total15.760.0.3.92219.64
FRn/a1.4380.21000.8502.429
crowded11.3110.4713.52315.29
heterogeneous0.5720.0.0.21000.659
normal, loose9.4130.5574.62014.510
open, scattered2.3300.0.2.5274.820
crowded, clustered normal1.0450.0.1.1412.130
total25.951.04012.81039.73
GEn/a0.0.0.0.0.0.0.0.
crowded2.3250.0.0.0.2.325
heterogeneous0.0.0.0.0.0.0.0.
normal, loose0.8660.0.0.0.0.866
open, scattered0.0.0.0.0.0.0.0.
crowded, clustered normal0.0.0.0.0.0.0.0.
total3.1130.0.0.0.3.113
GLn/a0.6580.4710.21001.241
crowded1.2401.2402.3274.717
heterogeneous0.0.0.0.0.0.0.0.
normal, loose0.8500.9431.5353.222
open, scattered0.9440.6580.8502.328
crowded, clustered normal1.5370.8500.21002.428
total4.9183.8205.11713.87
GRn/a1.6350.4712.2304.222
crowded10.1143.72316.11030.07
heterogeneous3.6230.9453.7238.215
normal, loose14.7116.21715.11136.07
open, scattered13.2124.02218.91036.17
crowded, clustered normal10.9135.41913.61230.07
total54.2520.7969.64144.52
JUn/a0.6580.0.1.0441.634
crowded10.0120.21004.61914.89
heterogeneous1.5340.21000.21001.931
normal, loose6.5160.4713.72210.512
open, scattered2.0310.21000.8503.025
crowded, clustered normal0.8490.0.0.21001.044
total21.360.94310.51132.83
LUn/a1.2410.0.0.21001.437
crowded9.8130.4712.92613.110
heterogeneous1.0440.0.0.21001.241
normal, loose15.290.21002.92518.38
open, scattered3.9220.0.0.4714.321
crowded, clustered normal0.8490.0.0.21001.044
total31.940.6586.81639.43
NEn/a0.6600.0.0.4711.046
crowded4.9190.21000.7505.816
heterogeneous4.4190.0.0.0.4.419
normal, loose6.0160.8500.8447.614
open, scattered5.6170.0.0.9456.615
crowded, clustered normal1.9330.0.0.0.1.933
total23.451.0442.82427.33
NWn/a0.0.0.0.0.0.0.0.
crowded1.1440.21002.0313.322
heterogeneous0.0.0.0.0.0.0.0.
normal, loose0.0.0.31000.4670.658
open, scattered0.8560.5710.0.1.342
crowded, clustered normal1.6370.21000.21001.933
total3.5211.2442.6267.29
OWn/a1.0450.0.0.4711.438
crowded2.0301.1412.3295.415
heterogeneous0.6570.0.0.9441.534
normal, loose1.3380.4721.2402.824
open, scattered2.0290.0.0.5592.626
crowded, clustered normal2.1290.21002.0314.320
total9.1121.7337.41318.14
SGn/a0.8500.21001.0452.031
crowded7.4152.2317.91517.59
heterogeneous1.2410.0.1.5382.727
normal, loose5.3191.6379.41316.310
open, scattered3.4250.0.1.9335.320
crowded, clustered normal2.1310.4702.7275.119
total20.194.42124.3748.84
SHn/a0.9490.0.0.0.0.949
crowded5.6150.0.0.4696.014
heterogeneous0.0.0.0.0.0.0.0.
normal, loose4.8170.0.0.0.4.817
open, scattered0.7570.0.0.0.0.757
crowded, clustered normal0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOn/a1.1440.0.0.21001.440
crowded9.4130.0.1.14510.512
heterogeneous0.0.0.0.0.0.0.0.
normal, loose13.790.0.1.63515.29
open, scattered3.8220.21000.0.4.021
crowded, clustered normal0.5700.0.0.0.0.570
total28.530.21002.92631.62
SZn/a1.0440.21000.4711.634
crowded1.5360.0.3.2234.718
heterogeneous0.21000.0.0.21000.471
normal, loose5.0180.6574.62010.311
open, scattered2.9250.21001.1404.220
crowded, clustered normal2.7260.4711.2404.320
total13.5101.43710.71125.54
TGn/a0.5600.0.0.21000.751
crowded6.6140.0.0.6517.213
heterogeneous0.21000.0.0.21000.470
normal, loose8.3120.0.1.2389.511
open, scattered1.4360.0.0.11001.534
crowded, clustered normal0.3700.0.0.0.0.370
total17.250.0.2.42619.63
TIn/a0.8500.0.1.9312.727
crowded5.7181.83331.5739.06
heterogeneous0.0.0.21001.2411.338
normal, loose3.8231.63518.21023.68
open, scattered4.3212.13014.91121.39
crowded, clustered normal1.7332.3297.91511.912
total16.3108.01575.6399.92
URn/a0.4720.0.0.0.0.472
crowded0.7491.7311.4363.918
heterogeneous0.21000.21000.0.0.472
normal, loose1.4371.0451.9294.319
open, scattered1.2360.21000.6582.129
crowded, clustered normal0.8490.4710.7541.931
total4.8183.5214.61812.96
VDn/a2.6270.21000.6583.324
crowded13.0111.4383.32417.79
heterogeneous3.2250.21000.21003.623
normal, loose23.982.2305.61831.77
open, scattered22.180.8504.62027.57
crowded, clustered normal2.6280.21001.0453.923
total67.535.01915.21087.72
VSn/a1.6350.6582.2304.521
crowded3.5233.2248.61415.410
heterogeneous0.21001.1412.9264.321
normal, loose4.3217.51511.71223.58
open, scattered10.7136.61717.61034.96
crowded, clustered normal4.2223.8238.51416.510
total24.5822.9851.6599.02
ZGn/a0.21000.0.0.11000.472
crowded0.8470.21001.0442.027
heterogeneous0.4710.0.0.0.0.471
normal, loose1.1400.0.0.9392.026
open, scattered0.3670.0.0.21000.556
crowded, clustered normal0.0.0.0.0.11000.1100
total2.9190.21002.3225.48
ZHn/a1.3400.0.0.21001.537
crowded16.990.0.0.95017.79
heterogeneous0.21000.0.0.0.0.2100
normal, loose26.960.0.0.47227.36
open, scattered1.5350.0.0.0.1.535
crowded, clustered normal0.4710.0.0.21000.658
total47.120.0.1.63548.82
Switzerlandn/a26.592.82715.91145.27
crowded177.4321.29116.14314.72
heterogeneous21.094.02218.01043.07
normal, loose214.5327.28109.54351.32
open, scattered104.0419.01077.15200.03
crowded, clustered normal41.9715.61146.26103.74
total585.2189.84382.821057.81
© WSL, Swiss National Forest Inventory, 19.06.2020 #853178/319509
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI1
state1983/85
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantoncrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a1.9230.0.0.0.1.923
crowded18.260.0.0.0.18.26
heterogeneous0.2710.0.0.0.0.271
normal, loose24.350.0.0.0.24.35
open, scattered2.6190.0.0.0.2.619
crowded, clustered normal0.8350.0.0.0.0.835
total47.910.0.0.0.47.91
AIn/a0.0.0.0.0.11000.1100
crowded1.3250.2691.0262.514
heterogeneous0.0.0.0.0.0.0.0.
normal, loose0.5400.2570.9311.721
open, scattered0.4490.0.0.2720.639
crowded, clustered normal0.0.0.0.0.0.0.0.
total2.2170.4432.3174.97
ARn/a0.3570.0.0.2710.545
crowded2.3180.11001.9214.311
heterogeneous0.11000.0.0.0.0.1100
normal, loose1.6230.11000.7332.417
open, scattered0.4500.0.0.0.0.450
crowded, clustered normal0.2710.0.0.0.0.271
total4.9100.2722.8167.94
BEn/a4.6150.7383.1188.411
crowded25.562.52018.3746.44
heterogeneous4.3150.6416.51211.49
normal, loose31.754.51519.8756.04
open, scattered15.984.21510.7930.75
crowded, clustered normal5.0141.5265.91312.49
total87.0313.9864.43165.41
BL/BSn/a0.8350.0.0.3571.129
crowded4.1150.0.1.0335.113
heterogeneous0.0.0.0.0.0.0.0.
normal, loose8.490.0.1.62510.07
open, scattered3.5160.0.0.7374.214
crowded, clustered normal0.11000.0.0.0.0.1100
total16.940.0.3.51620.42
FRn/a1.6250.2710.7382.520
crowded10.580.5454.71415.76
heterogeneous0.3580.0.0.5440.835
normal, loose8.8100.8354.91314.47
open, scattered2.2210.2702.7195.213
crowded, clustered normal0.7380.11001.0311.823
total24.241.82314.5740.42
GEn/a0.11000.0.0.0.0.1100
crowded1.9190.0.0.0.1.919
heterogeneous0.0.0.0.0.0.0.0.
normal, loose1.1280.0.0.0.1.128
open, scattered0.3690.0.0.0.0.369
crowded, clustered normal0.0.0.0.0.0.0.0.
total3.460.0.0.0.3.46
GLn/a1.0310.5450.4501.922
crowded1.9231.2282.8175.810
heterogeneous0.0.0.0.0.0.0.0.
normal, loose0.9330.9321.1303.017
open, scattered1.3270.3580.6412.221
crowded, clustered normal1.1290.6410.3572.022
total6.2113.5155.21215.05
GRn/a2.3210.7382.5205.513
crowded10.4104.81416.8732.15
heterogeneous3.3170.9334.3158.611
normal, loose15.086.51215.9837.55
open, scattered16.674.71419.4740.74
crowded, clustered normal11.494.91413.0829.35
total59.1422.6672.03153.71
JUn/a0.8350.0.0.6411.426
crowded10.780.11004.41415.16
heterogeneous1.1300.11000.2711.426
normal, loose6.7110.2713.11710.09
open, scattered3.1180.11001.8235.013
crowded, clustered normal1.1300.0.0.11001.229
total23.440.54410.2834.12
LUn/a1.9220.0.0.2712.121
crowded11.580.4503.01714.87
heterogeneous0.8350.0.0.11000.933
normal, loose14.770.11002.81817.66
open, scattered4.1150.11000.4504.514
crowded, clustered normal1.2270.0.0.11001.326
total34.130.6416.51141.22
NEn/a0.8340.0.0.2711.031
crowded4.9130.2710.8355.911
heterogeneous4.6130.11000.4495.113
normal, loose6.8110.6410.8328.29
open, scattered5.5120.0.0.7386.111
crowded, clustered normal2.0210.0.0.0.2.021
total24.530.9332.91728.42
NWn/a0.4490.0.0.3560.835
crowded0.8340.6391.3272.716
heterogeneous0.11000.0.0.0.0.1100
normal, loose0.4500.2700.9341.525
open, scattered0.8360.3570.0.1.129
crowded, clustered normal0.9340.2710.6401.723
total3.5141.4263.1158.05
OWn/a0.9330.0.0.2711.130
crowded1.6250.7382.8185.112
heterogeneous0.4500.0.1.0311.426
normal, loose1.6240.5451.5263.616
open, scattered2.2200.2710.9323.416
crowded, clustered normal2.4200.3581.5254.214
total9.181.7238.0918.83
SGn/a1.4280.2711.6253.218
crowded7.8102.1229.9919.86
heterogeneous0.6410.0.1.4272.022
normal, loose5.3130.9338.61014.97
open, scattered3.0180.4502.9186.412
crowded, clustered normal1.9230.4502.3214.615
total19.964.11526.8550.82
SHn/a0.7370.0.0.0.0.737
crowded5.3110.0.0.5445.810
heterogeneous0.0.0.0.0.0.0.0.
normal, loose4.3120.0.0.0.4.312
open, scattered0.7370.0.0.11000.835
crowded, clustered normal0.5440.0.0.0.0.544
total11.630.0.0.64012.22
SOn/a0.5440.0.0.11000.641
crowded11.080.11001.32712.47
heterogeneous0.0.0.0.0.0.0.0.
normal, loose12.870.0.1.52514.36
open, scattered3.6160.11000.2713.915
crowded, clustered normal0.2700.0.0.0.0.270
total28.030.2703.11731.42
SZn/a1.8240.11000.8352.719
crowded1.7240.3573.9155.812
heterogeneous0.4500.11000.11000.641
normal, loose4.5140.4494.6149.59
open, scattered2.8180.5451.4264.714
crowded, clustered normal1.8230.3581.4263.516
total12.971.72412.2726.83
TGn/a0.6380.0.0.11000.735
crowded6.8100.0.1.1287.98
heterogeneous0.11000.0.0.11000.270
normal, loose8.280.0.1.1289.38
open, scattered1.0300.0.0.11001.128
crowded, clustered normal0.2700.0.0.0.0.270
total17.030.0.2.41819.42
TIn/a1.3280.11002.1223.517
crowded6.0131.82333.6441.54
heterogeneous0.11000.2711.2291.526
normal, loose4.0162.52018.8725.36
open, scattered5.2143.21713.9822.36
crowded, clustered normal2.4202.6198.31113.48
total19.1710.4977.92107.42
URn/a0.7380.11000.2701.131
crowded0.7371.5251.7243.914
heterogeneous0.2710.11000.11000.550
normal, loose1.3281.0311.8234.115
open, scattered1.6240.6440.6412.818
crowded, clustered normal0.9340.5440.7402.121
total5.4123.9155.11214.45
VDn/a3.0180.11000.8353.916
crowded12.881.1304.11518.07
heterogeneous3.6160.11000.3584.116
normal, loose26.351.8236.61234.74
open, scattered23.761.0313.81628.55
crowded, clustered normal3.5170.11001.4265.014
total72.824.21517.0794.11
VSn/a3.3171.1302.4206.812
crowded3.9163.1188.11015.18
heterogeneous0.4501.3282.6194.415
normal, loose5.9136.41211.6923.96
open, scattered11.598.91015.4835.95
crowded, clustered normal4.7144.4157.21116.37
total29.8525.3547.34102.42
ZGn/a0.2710.0.0.11000.358
crowded1.2260.11001.0302.317
heterogeneous0.2710.0.0.11000.357
normal, loose1.0300.0.0.7331.821
open, scattered0.6390.0.0.11000.736
crowded, clustered normal0.11000.0.0.3560.449
total3.3120.11002.3165.74
ZHn/a1.9230.0.0.11002.022
crowded17.760.0.0.54518.26
heterogeneous0.2710.0.0.0.0.271
normal, loose26.740.0.0.27126.94
open, scattered2.0220.0.0.0.2.022
crowded, clustered normal0.3580.0.0.11000.450
total48.810.0.0.93349.71
Switzerlandn/a33.153.81617.2854.24
crowded180.3221.57124.33326.01
heterogeneous21.173.51719.0743.75
normal, loose222.7227.86109.53360.01
open, scattered114.4324.9676.83216.12
crowded, clustered normal43.3515.9844.35103.53
total615.0197.43391.211103.60
© WSL, Swiss National Forest Inventory, 19.06.2020 #853179/319510
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1983/85
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantoncrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a2.4280.0.0.0.2.428
crowded18.880.0.0.0.18.88
heterogeneous0.0.0.0.0.0.0.0.
normal, loose23.570.0.0.0.23.57
open, scattered2.0310.0.0.0.2.031
crowded, clustered normal0.8500.0.0.0.0.850
total47.520.0.0.0.47.52
AIn/a0.0.0.0.0.21000.2100
crowded1.4350.4681.2343.018
heterogeneous0.0.0.0.0.0.0.0.
normal, loose0.6570.21000.6581.336
open, scattered0.4710.0.0.21000.657
crowded, clustered normal0.0.0.0.0.0.0.0.
total2.3250.6572.2245.19
ARn/a0.21000.0.0.0.0.2100
crowded2.8230.21001.8304.714
heterogeneous0.21000.0.0.0.0.2100
normal, loose1.3360.0.0.9382.326
open, scattered0.4710.0.0.0.0.471
crowded, clustered normal0.4730.0.0.0.0.473
total5.3130.21002.7228.16
BEn/a5.2190.8503.4249.414
crowded26.982.82718.01047.76
heterogeneous3.6231.2416.71711.413
normal, loose29.582.92621.5954.05
open, scattered15.5114.02211.01330.57
crowded, clustered normal5.6191.6356.51713.612
total86.3413.31267.14166.71
BL/BSn/a1.3410.0.0.4701.634
crowded3.9210.0.1.4405.318
heterogeneous0.0.0.0.0.0.0.0.
normal, loose7.2140.0.1.7349.012
open, scattered3.5220.0.0.4703.821
crowded, clustered normal0.0.0.0.0.0.0.0.
total15.960.0.3.92219.73
FRn/a1.8340.21001.0453.026
crowded11.3110.4713.72215.49
heterogeneous0.5720.0.0.21000.659
normal, loose9.4130.5574.62014.510
open, scattered2.3300.0.2.5274.820
crowded, clustered normal1.0450.0.1.1412.130
total26.361.04013.11040.53
GEn/a0.0.0.0.0.0.0.0.
crowded2.3250.0.0.0.2.325
heterogeneous0.0.0.0.0.0.0.0.
normal, loose0.8660.0.0.0.0.866
open, scattered0.0.0.0.0.0.0.0.
crowded, clustered normal0.0.0.0.0.0.0.0.
total3.1130.0.0.0.3.113
GLn/a0.6580.4710.4711.438
crowded1.4371.2402.3274.917
heterogeneous0.0.0.0.0.0.0.0.
normal, loose0.8500.9431.5353.222
open, scattered0.9440.6580.8502.328
crowded, clustered normal1.5370.8500.21002.428
total5.1173.8205.31714.27
GRn/a2.0320.6582.6285.219
crowded10.9133.72316.11030.87
heterogeneous4.0220.9453.7238.615
normal, loose15.5116.51715.71137.66
open, scattered14.2114.02219.41037.67
crowded, clustered normal11.5135.61813.81131.07
total58.2521.3971.44150.92
JUn/a0.8500.0.1.0441.832
crowded10.0120.21004.61914.89
heterogeneous1.5340.21000.4712.129
normal, loose6.7160.4713.72210.712
open, scattered2.6270.21000.8503.623
crowded, clustered normal0.8490.0.0.21001.044
total22.460.94310.71134.03
LUn/a1.4380.0.0.21001.635
crowded10.0130.6582.92613.510
heterogeneous1.0440.0.0.21001.241
normal, loose15.690.21002.92518.78
open, scattered4.5200.0.0.4714.919
crowded, clustered normal0.8490.0.0.21001.044
total33.340.8506.81641.03
NEn/a0.6600.0.0.4711.046
crowded4.9190.21000.7505.816
heterogeneous4.4190.0.0.0.4.419
normal, loose6.0160.8500.8447.614
open, scattered5.8160.0.1.1417.015
crowded, clustered normal2.4280.0.0.0.2.428
total24.151.0443.02328.23
NWn/a0.0.0.0.0.0.0.0.
crowded1.1440.21002.0313.322
heterogeneous0.0.0.0.0.0.0.0.
normal, loose0.0.0.31000.6580.949
open, scattered0.8560.5710.0.1.342
crowded, clustered normal1.6370.21000.21001.933
total3.5211.2442.8247.58
OWn/a1.2410.0.0.4711.635
crowded2.0301.1412.5275.715
heterogeneous0.6570.0.1.1401.732
normal, loose1.3380.4721.2402.824
open, scattered2.0290.0.0.5592.626
crowded, clustered normal2.1290.21002.0314.320
total9.3121.7337.81318.74
SGn/a1.9330.21001.2413.324
crowded7.6152.2318.11417.89
heterogeneous1.2410.0.1.7352.926
normal, loose5.3191.6379.81316.79
open, scattered3.6240.0.2.3305.918
crowded, clustered normal2.3300.4702.7275.319
total21.884.42125.8752.03
SHn/a0.9490.0.0.0.0.949
crowded5.6150.0.0.4696.014
heterogeneous0.0.0.0.0.0.0.0.
normal, loose4.8170.0.0.0.4.817
open, scattered0.7570.0.0.0.0.757
crowded, clustered normal0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOn/a1.1440.0.0.21001.440
crowded9.6120.0.1.14510.612
heterogeneous0.0.0.0.0.0.0.0.
normal, loose13.990.0.1.63515.59
open, scattered3.8220.21000.0.4.021
crowded, clustered normal0.5700.0.0.0.0.570
total28.930.21002.92631.92
SZn/a1.8320.21000.4712.528
crowded1.5360.21003.2234.918
heterogeneous0.21000.0.0.21000.471
normal, loose5.2180.6574.81910.711
open, scattered2.9250.21001.1404.220
crowded, clustered normal2.7260.6581.2404.420
total14.591.73210.91127.14
TGn/a0.5600.0.0.21000.751
crowded6.7140.0.0.6517.313
heterogeneous0.21000.0.0.21000.470
normal, loose8.3120.0.1.2389.511
open, scattered1.4360.0.0.11001.534
crowded, clustered normal0.3700.0.0.0.0.370
total17.350.0.2.42619.73
TIn/a1.4380.0.2.7264.122
crowded5.9181.83332.3740.06
heterogeneous0.0.0.21001.2411.338
normal, loose4.4211.63518.91024.98
open, scattered4.8202.13015.31122.39
crowded, clustered normal2.3292.3298.31512.912
total18.8108.01578.73105.52
URn/a0.4720.0.0.0.0.472
crowded0.7491.7311.4363.918
heterogeneous0.21000.21000.0.0.472
normal, loose1.6341.0452.1284.718
open, scattered1.4330.21000.8502.426
crowded, clustered normal0.8490.4710.7541.931
total5.2173.5215.01713.76
VDn/a3.2250.21000.6583.922
crowded13.0111.4383.52317.99
heterogeneous3.2250.21000.21003.623
normal, loose24.782.4285.71832.96
open, scattered23.480.8504.62028.77
crowded, clustered normal2.6280.21001.0453.923
total70.035.11915.61090.82
VSn/a2.6280.8502.4295.918
crowded3.9223.2248.81416.010
heterogeneous0.21001.1412.9264.321
normal, loose4.5217.51512.21224.38
open, scattered11.2136.61718.51036.36
crowded, clustered normal4.6213.8238.51416.910
total27.1823.1853.45103.62
ZGn/a0.21000.0.0.11000.472
crowded0.8470.21001.0442.027
heterogeneous0.4710.0.0.0.0.471
normal, loose1.1400.0.0.9392.026
open, scattered0.3670.0.0.21000.556
crowded, clustered normal0.0.0.0.0.3710.371
total2.9190.21002.5205.57
ZHn/a1.5370.0.0.21001.735
crowded17.390.0.0.95018.19
heterogeneous0.21000.0.0.0.0.2100
normal, loose27.560.0.0.47227.96
open, scattered1.5350.0.0.0.1.535
crowded, clustered normal0.6580.0.0.21000.850
total48.520.0.1.63550.22
Switzerlandn/a33.083.42418.11054.56
crowded180.5321.69118.54320.62
heterogeneous21.694.02218.61044.27
normal, loose219.5327.68113.54360.62
open, scattered110.0419.41080.15209.43
crowded, clustered normal45.2715.91147.26108.34
total609.7191.94395.921097.51
© WSL, Swiss National Forest Inventory, 19.06.2020 #853180/319511
NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1993/95
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantoncrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.21000.0.0.0.0.2100
crowded14.2100.0.0.0.14.210
normal20.580.0.0.0.20.58
loose8.2140.0.0.0.8.214
open3.0250.0.0.0.3.025
scattered0.4710.0.0.0.0.471
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.21000.0.0.0.0.2100
heterogeneous0.0.0.0.0.0.0.0.
total46.720.0.0.0.46.72
AIn/a0.0.0.0.0.0.0.0.
crowded1.6320.21001.3343.118
normal0.21000.21000.21000.557
loose0.21000.0.0.21000.472
open0.0.0.21000.4720.657
scattered0.0.0.0.0.0.0.0.
grouped crowded0.4710.0.0.21000.657
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total2.3250.6572.2245.19
ARn/a0.4730.0.0.0.0.473
crowded3.0230.21001.7304.915
normal1.2400.0.1.0402.227
loose0.31000.0.0.0.0.3100
open0.0.0.0.0.0.0.0.
scattered0.0.0.0.0.0.0.0.
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.31000.0.0.0.0.3100
heterogeneous0.21000.0.0.0.0.2100
total5.3130.21002.7228.16
BEn/a1.0450.21000.4711.635
crowded19.2103.32418.21040.86
normal28.181.73316.71046.56
loose14.7113.22511.71329.68
open10.2131.6359.01520.89
scattered3.4241.0451.8336.218
grouped crowded2.8270.8502.8276.417
grouped normal1.2410.4711.4383.026
heterogeneous2.7270.4713.0266.118
total83.5412.71264.94161.11
BL/BSn/a0.0.0.0.0.0.0.0.
crowded4.6200.0.1.9326.516
normal7.5140.0.1.1448.612
loose1.9330.0.0.5722.329
open1.2400.0.0.21001.437
scattered0.21000.0.0.0.0.2100
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.31000.0.0.0.0.3100
heterogeneous0.0.0.0.0.21000.2100
total15.760.0.3.92219.64
FRn/a0.0.0.0.0.0.0.0.
crowded10.0130.3703.52313.810
normal7.4160.0.4.02211.412
loose3.7230.21002.2286.117
open3.1250.5571.5355.119
scattered0.9500.0.0.6581.638
grouped crowded0.4710.0.0.21000.557
grouped normal0.4710.0.0.3700.749
heterogeneous0.0.0.0.0.5700.570
total25.951.04012.81039.73
GEn/a0.0.0.0.0.0.0.0.
crowded3.1130.0.0.0.3.113
normal0.0.0.0.0.0.0.0.
loose0.0.0.0.0.0.0.0.
open0.0.0.0.0.0.0.0.
scattered0.0.0.0.0.0.0.0.
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total3.1130.0.0.0.3.113
GLn/a0.0.0.4710.0.0.471
crowded1.3361.0442.2294.517
normal0.4711.0441.8323.123
loose1.2400.4710.4712.030
open0.6570.21000.21001.044
scattered0.7490.4710.6581.732
grouped crowded0.21000.21000.0.0.470
grouped normal0.21000.4710.0.0.658
heterogeneous0.21000.0.0.0.0.2100
total4.9183.8205.11713.87
GRn/a0.4710.0.2.0312.429
crowded5.6182.5278.91417.010
normal8.1153.82212.81224.78
loose13.0124.22214.41131.67
open13.2125.61817.81036.67
scattered8.0152.0328.21518.210
grouped crowded3.0261.2411.8335.918
grouped normal2.0320.8503.2246.018
heterogeneous1.0450.6580.6582.230
total54.2520.7969.64144.52
JUn/a0.0.0.0.0.0.0.0.
crowded5.2180.21003.9219.312
normal10.0120.3674.32014.79
loose3.1240.21001.2404.519
open1.7330.21000.4712.328
scattered0.8490.0.0.4711.240
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.4710.0.0.0.0.471
heterogeneous0.0.0.0.0.4710.471
total21.360.94310.51132.83
LUn/a0.6570.0.0.0.0.657
crowded9.4130.4711.63511.511
normal9.4130.21002.82612.411
loose5.9170.0.1.6357.515
open4.2210.0.0.6584.819
scattered0.4710.0.0.21000.657
grouped crowded0.21000.0.0.0.0.2100
grouped normal0.6570.0.0.0.0.657
heterogeneous1.2400.0.0.0.1.240
total31.940.6586.81639.43
NEn/a0.31000.0.0.0.0.3100
crowded2.1300.0.0.6592.726
normal6.1160.7571.0407.814
loose6.8150.21000.5587.514
open4.3200.0.0.7515.118
scattered1.1440.21000.0.1.341
grouped crowded0.31000.0.0.0.0.3100
grouped normal0.7570.0.0.0.0.757
heterogeneous1.6320.0.0.0.1.632
total23.451.0442.82427.33
NWn/a0.0.0.31000.0.0.3100
crowded0.6570.21000.9491.732
normal0.5710.31001.4342.229
loose0.8560.4720.0.1.242
open0.5710.0.0.31000.856
scattered0.31000.0.0.0.0.3100
grouped crowded0.31000.0.0.0.0.3100
grouped normal0.5710.0.0.0.0.571
heterogeneous0.0.0.0.0.0.0.0.
total3.5211.2442.6267.29
OWn/a0.4710.0.0.11000.559
crowded1.7331.2382.2295.216
normal0.9460.0.0.6591.535
loose0.9450.21001.0442.229
open1.9310.21001.6353.721
scattered1.7310.0.0.21001.929
grouped crowded0.4720.0.0.5590.945
grouped normal1.1410.0.1.1432.129
heterogeneous0.0.0.0.0.0.0.0.
total9.1121.7337.41318.14
SGn/a0.8500.21000.6561.734
crowded4.9192.0337.41514.210
normal6.3171.0457.81415.110
loose3.4240.5713.0266.916
open1.5380.4711.9333.823
scattered1.8350.0.1.5383.225
grouped crowded0.5710.0.1.1441.637
grouped normal0.8500.0.0.21001.145
heterogeneous0.21000.21000.8501.241
total20.194.42124.3748.84
SHn/a0.0.0.0.0.0.0.0.
crowded3.4220.0.0.0.3.422
normal6.5130.0.0.4696.912
loose2.0300.0.0.0.2.030
open0.0.0.0.0.0.0.0.
scattered0.0.0.0.0.0.0.0.
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOn/a0.0.0.0.0.0.0.0.
crowded6.9160.0.0.9507.815
normal9.9120.21001.14111.211
loose7.3150.0.0.7588.014
open4.2210.0.0.21004.321
scattered0.21000.0.0.0.0.2100
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total28.530.21002.92631.62
SZn/a1.0450.21000.0.1.240
crowded3.5230.0.2.8266.316
normal1.8330.6573.3245.717
loose2.2300.4711.7334.220
open2.8260.0.1.5354.320
scattered1.0450.21000.8502.031
grouped crowded0.21000.0.0.0.0.2100
grouped normal0.21000.0.0.0.0.2100
heterogeneous0.8500.0.0.6581.438
total13.5101.43710.71125.54
TGn/a0.21000.0.0.0.0.2100
crowded6.4140.0.0.4576.813
normal5.9160.0.1.2397.113
loose2.3260.0.0.5592.824
open2.0300.0.0.3702.327
scattered0.21000.0.0.0.0.2100
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.11000.0.0.0.0.1100
total17.250.0.2.42619.63
TIn/a0.0.0.0.0.6580.658
crowded4.7200.85030.6736.06
normal4.0221.24116.21021.49
loose1.4381.4388.81511.613
open2.0321.5359.41413.012
scattered1.5350.8502.9265.219
grouped crowded0.4710.4712.3293.125
grouped normal1.7330.8502.7275.319
heterogeneous0.6581.2412.0323.723
total16.3108.01575.6399.92
URn/a0.0.0.21000.21000.472
crowded0.7491.0431.4363.121
normal0.8501.5351.4363.721
loose0.21000.21000.8491.239
open1.1400.21000.8502.129
scattered0.4710.21000.0.0.657
grouped crowded0.6570.0.0.0.0.657
grouped normal1.0440.21000.0.1.239
heterogeneous0.0.0.0.0.0.0.0.
total4.8183.5214.61812.96
VDn/a0.21000.0.0.4710.658
crowded18.190.6584.22122.98
normal21.492.7275.91830.07
loose9.9141.0452.52813.311
open8.3150.4711.0459.614
scattered5.0190.0.1.0456.018
grouped crowded1.6350.0.0.21001.933
grouped normal2.2300.21000.0.2.429
heterogeneous0.8500.21000.0.1.045
total67.535.01915.21087.72
VSn/a0.6580.6580.6581.933
crowded4.3213.62210.71318.69
normal2.6284.42010.71317.810
loose4.4214.8208.11517.310
open5.4195.3199.71420.49
scattered4.4211.4384.62110.313
grouped crowded0.6581.2412.8274.621
grouped normal1.8330.8502.0314.620
heterogeneous0.4710.8502.4293.523
total24.5822.9851.6599.02
ZGn/a0.0.0.0.0.0.0.0.
crowded0.6560.0.0.4671.042
normal1.5330.21000.9442.522
loose0.4720.0.0.6590.944
open0.0.0.0.0.3710.371
scattered0.0.0.0.0.0.0.0.
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.4720.0.0.21000.659
total2.9190.21002.3225.48
ZHn/a0.0.0.0.0.0.0.0.
crowded11.4120.0.0.47011.912
normal22.270.0.1.24123.47
loose9.6130.0.0.0.9.613
open3.6220.0.0.0.3.622
scattered0.21000.0.0.0.0.2100
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.21000.0.0.0.0.2100
total47.120.0.1.63548.82
Switzerlandn/a6.2182.0325.12013.312
crowded146.8317.510106.04270.32
normal183.0320.01097.74300.72
loose104.0417.31160.26181.43
open75.0516.31157.66148.93
scattered32.686.01822.8961.46
grouped crowded11.8133.82311.91327.58
grouped normal15.6113.52410.91330.18
heterogeneous10.3143.42410.61424.39
total585.2189.84382.821057.81
© WSL, Swiss National Forest Inventory, 19.06.2020 #853181/319512
NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1993/95
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantoncrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.21000.0.0.0.0.2100
crowded14.6100.0.0.0.14.610
normal21.170.0.0.0.21.17
loose8.6140.0.0.0.8.614
open3.0250.0.0.0.3.025
scattered0.4710.0.0.0.0.471
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.21000.0.0.0.0.2100
heterogeneous0.0.0.0.0.0.0.0.
total48.120.0.0.0.48.12
AIn/a0.0.0.0.0.0.0.0.
crowded1.6320.21001.3343.118
normal0.21000.21000.21000.557
loose0.21000.0.0.21000.472
open0.0.0.21000.4720.657
scattered0.0.0.0.0.0.0.0.
grouped crowded0.4710.0.0.21000.657
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total2.3250.6572.2245.19
ARn/a0.4730.0.0.0.0.473
crowded3.0230.21001.7304.915
normal1.2400.0.1.0402.227
loose0.31000.0.0.0.0.3100
open0.0.0.0.0.0.0.0.
scattered0.0.0.0.0.0.0.0.
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.31000.0.0.0.0.3100
heterogeneous0.21000.0.0.0.0.2100
total5.3130.21002.7228.16
BEn/a1.0450.21000.4711.635
crowded20.893.32418.61042.76
normal28.381.73317.51047.56
loose14.7113.22512.31230.28
open10.2131.8339.41421.49
scattered3.6231.0451.8336.417
grouped crowded4.3220.8502.8277.916
grouped normal1.8330.4711.4383.623
heterogeneous2.9260.4713.2256.517
total87.7412.91267.34167.91
BL/BSn/a0.0.0.0.0.0.0.0.
crowded4.8190.0.1.9326.715
normal7.7140.0.1.1448.812
loose1.9330.0.0.7582.628
open1.2400.0.0.21001.437
scattered0.21000.0.0.0.0.2100
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.31000.0.0.0.0.3100
heterogeneous0.0.0.0.0.21000.2100
total16.160.0.4.12120.23
FRn/a0.0.0.0.0.0.0.0.
crowded10.0130.3703.52313.810
normal8.2150.0.4.12112.311
loose3.7230.21002.2286.117
open3.3240.5571.7335.518
scattered1.1450.0.0.6581.835
grouped crowded0.4710.0.0.6580.944
grouped normal0.4710.0.0.3700.749
heterogeneous0.0.0.0.0.5700.570
total27.151.04013.51041.73
GEn/a0.0.0.0.0.0.0.0.
crowded3.1130.0.0.0.3.113
normal0.0.0.0.0.0.0.0.
loose0.0.0.0.0.0.0.0.
open0.0.0.0.0.0.0.0.
scattered0.0.0.0.0.0.0.0.
grouped crowded0.41000.0.0.0.0.4100
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total3.520.0.0.0.3.52
GLn/a0.0.0.4710.0.0.471
crowded1.3361.0442.2294.517
normal0.6571.0441.8323.322
loose1.4370.4710.4712.229
open0.8500.21000.4711.437
scattered0.9440.4710.6581.931
grouped crowded0.21000.21000.0.0.470
grouped normal0.21000.5580.0.0.750
heterogeneous0.21000.0.0.0.0.2100
total5.7174.0205.21714.96
GRn/a0.6580.0.2.0312.628
crowded6.6172.7269.31418.610
normal9.5144.02113.91127.48
loose14.4114.32115.41134.17
open13.8125.61818.81038.26
scattered11.2132.42910.81324.59
grouped crowded4.2221.2412.8278.215
grouped normal2.6280.8503.6237.016
heterogeneous1.2410.6580.6582.329
total64.1521.7977.24162.92
JUn/a0.0.0.0.0.0.0.0.
crowded5.2180.21004.1209.512
normal10.0120.3674.32014.79
loose3.1240.21001.2404.519
open1.7330.21000.4712.328
scattered1.4360.0.0.4711.732
grouped crowded0.21000.0.0.0.0.2100
grouped normal0.4710.0.0.0.0.471
heterogeneous0.0.0.0.0.4710.471
total22.160.94310.71133.73
LUn/a0.6570.0.0.0.0.657
crowded9.6130.4711.63511.711
normal9.9120.21002.82612.910
loose6.1170.0.1.6357.714
open4.4200.0.0.6585.019
scattered0.6580.0.0.21000.850
grouped crowded0.21000.0.0.0.0.2100
grouped normal1.0440.0.0.21001.240
heterogeneous1.2400.0.0.0.1.240
total33.540.6587.01641.22
NEn/a0.31000.0.0.0.0.3100
crowded2.1300.0.0.6592.726
normal6.3160.7571.0408.014
loose6.8150.21000.5587.514
open4.3200.0.0.7515.118
scattered1.6360.21000.0.1.834
grouped crowded0.5720.0.0.0.0.572
grouped normal0.7570.0.0.21000.949
heterogeneous1.6320.0.0.0.1.632
total24.251.0443.02328.33
NWn/a0.0.0.31000.0.0.3100
crowded0.6570.21000.9491.732
normal0.5710.31001.4342.229
loose1.1480.4720.0.1.539
open0.5710.0.0.31000.856
scattered0.31000.0.0.0.0.3100
grouped crowded0.31000.0.0.0.0.3100
grouped normal1.0490.0.0.0.1.049
heterogeneous0.0.0.0.0.0.0.0.
total4.3181.2442.6268.08
OWn/a0.4710.0.0.11000.559
crowded1.9311.2382.2295.416
normal0.9460.0.0.8501.833
loose0.9450.21001.0442.229
open1.9310.21001.6353.721
scattered1.7310.0.0.21001.929
grouped crowded0.4720.0.0.5590.945
grouped normal1.7330.0.1.1432.726
heterogeneous0.0.0.0.0.0.0.0.
total9.9111.7337.61319.14
SGn/a0.8500.21000.9481.932
crowded5.1192.0337.81414.910
normal7.3161.0458.51416.89
loose3.6230.5713.8237.915
open1.9330.4711.9334.322
scattered2.2310.0.1.5383.623
grouped crowded0.9500.0.1.6372.430
grouped normal1.0450.0.0.5711.538
heterogeneous0.21000.21000.8501.241
total23.184.42127.1754.53
SHn/a0.0.0.0.0.0.0.0.
crowded3.4220.0.0.0.3.422
normal6.5130.0.0.4696.912
loose2.0300.0.0.0.2.030
open0.0.0.0.0.0.0.0.
scattered0.0.0.0.0.0.0.0.
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total11.940.0.0.46912.33
SOn/a0.0.0.0.0.0.0.0.
crowded7.1150.0.0.9508.014
normal10.1120.21001.14111.411
loose7.5150.0.0.7588.214
open4.3210.0.0.21004.520
scattered0.21000.0.0.0.0.2100
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total29.330.21002.92632.32
SZn/a1.0450.21000.0.1.240
crowded3.7220.0.3.0256.715
normal2.2300.9443.9227.015
loose2.2300.4711.7334.220
open2.8260.0.1.5354.320
scattered1.0450.21000.8502.031
grouped crowded0.21000.0.0.0.0.2100
grouped normal0.21000.0.0.0.0.2100
heterogeneous1.0450.0.0.6581.635
total14.391.73211.51127.54
TGn/a0.21000.0.0.0.0.2100
crowded6.7130.0.0.4577.113
normal5.9160.0.1.2397.113
loose2.3260.0.0.5592.824
open2.0300.0.0.3702.327
scattered0.21000.0.0.0.0.2100
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.11000.0.0.0.0.1100
total17.550.0.2.42619.93
TIn/a0.0.0.0.0.6580.658
crowded5.3190.85031.5737.66
normal4.7201.24117.51023.58
loose1.8331.4389.01512.212
open3.0261.73310.21314.911
scattered2.5270.8503.8227.116
grouped crowded0.8500.6572.9264.221
grouped normal2.1301.0452.9266.018
heterogeneous0.6581.2412.2303.922
total20.798.61480.83110.12
URn/a0.0.0.21000.21000.472
crowded1.1401.2391.6343.920
normal1.0451.5351.4363.920
loose0.21000.21001.0441.436
open1.1400.21000.8502.129
scattered0.5570.21000.0.0.749
grouped crowded0.6570.0.0.0.0.657
grouped normal1.4360.21000.21001.831
heterogeneous0.0.0.0.0.0.0.0.
total6.0153.7215.11714.85
VDn/a0.21000.0.0.4710.658
crowded19.990.6584.42024.97
normal22.582.8266.11731.57
loose10.3131.0452.52813.811
open9.1140.4711.24110.613
scattered5.8180.0.1.0456.816
grouped crowded1.8330.21000.21002.330
grouped normal2.9260.21000.0.3.125
heterogeneous0.8500.21000.0.1.045
total73.335.31915.81094.52
VSn/a0.6580.6580.8502.131
crowded4.7203.62210.91219.29
normal3.6234.42010.91319.09
loose4.6215.1198.31517.910
open5.8185.71810.31321.89
scattered6.0181.4384.82012.112
grouped crowded0.8501.2413.0265.020
grouped normal2.3300.8502.1305.219
heterogeneous0.4710.8502.4293.523
total28.8723.5853.65105.92
ZGn/a0.0.0.0.0.0.0.0.
crowded0.6560.0.0.5521.237
normal1.5330.21000.9442.522
loose0.4720.0.0.6590.944
open0.0.0.0.0.3710.371
scattered0.0.0.0.0.0.0.0.
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.4720.0.0.21000.659
total2.9190.21002.5205.57
ZHn/a0.0.0.0.0.0.0.0.
crowded12.0120.0.0.47012.511
normal22.470.0.1.24123.67
loose9.8130.0.0.0.9.813
open3.6220.0.0.0.3.622
scattered0.21000.0.0.0.0.2100
grouped crowded0.21000.0.0.0.0.2100
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.21000.0.0.0.0.2100
total48.420.0.1.63550.01
Switzerlandn/a6.4182.0325.51913.912
crowded155.0317.910109.34282.22
normal192.1320.710103.24315.92
loose108.0417.71163.45189.13
open78.9517.11161.05157.03
scattered41.676.41726.6974.65
grouped crowded16.6114.22214.61235.47
grouped normal20.3103.92212.51236.87
heterogeneous10.9133.42411.01325.29
total629.9193.34406.921130.11
© WSL, Swiss National Forest Inventory, 19.06.2020 #853182/319513
NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: canton
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI2
state1993/95
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantoncrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AGn/a0.21000.0.0.0.0.2100
crowded15.290.0.0.0.15.29
normal20.870.0.0.0.20.87
loose8.1140.0.0.0.8.114
open2.8250.0.0.0.2.825
scattered0.4710.0.0.0.0.471
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.21000.0.0.0.0.2100
heterogeneous0.0.0.0.0.0.0.0.
total47.620.0.0.0.47.62
AIn/a0.0.0.0.0.0.0.0.
crowded1.4300.21001.4293.017
normal0.11000.11000.4710.649
loose0.21000.0.0.11000.371
open0.0.0.21000.3710.557
scattered0.0.0.0.0.0.0.0.
grouped crowded0.5570.0.0.21000.748
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total2.3230.5572.3215.09
ARn/a0.4740.0.0.0.0.474
crowded3.0210.11001.7274.814
normal1.0410.0.1.0372.026
loose0.21000.0.0.3710.561
open0.0.0.0.0.0.0.0.
scattered0.0.0.0.0.0.0.0.
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.21000.0.0.0.0.2100
heterogeneous0.11000.0.0.0.0.1100
total5.0120.11003.0188.16
BEn/a0.9450.21000.4711.535
crowded21.693.32318.7943.66
normal28.871.93017.51048.25
loose14.5112.92511.81229.27
open9.8131.6339.41320.89
scattered3.6221.1411.6336.317
grouped crowded3.8220.7503.0247.615
grouped normal1.8320.4711.2383.423
heterogeneous3.4230.5583.0246.916
total88.2312.61166.64167.41
BL/BSn/a0.0.0.0.0.0.0.0.
crowded5.3170.0.1.6326.914
normal7.6130.0.1.4369.011
loose1.7330.0.0.6592.428
open1.1410.0.0.21001.337
scattered0.21000.0.0.0.0.2100
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.31000.0.0.0.0.3100
heterogeneous0.0.0.0.0.21000.2100
total16.260.0.4.12020.23
FRn/a0.0.0.0.0.0.0.0.
crowded10.3120.5573.62214.39
normal7.6150.0.4.02011.611
loose3.7210.4711.9286.016
open3.5220.5571.5335.517
scattered1.3410.0.0.6581.833
grouped crowded0.5580.0.0.5581.041
grouped normal0.3710.0.0.3700.649
heterogeneous0.21000.0.0.6580.850
total27.451.33513.01041.73
GEn/a0.0.0.0.0.0.0.0.
crowded2.3210.0.0.0.2.321
normal0.31000.0.0.0.0.3100
loose0.0.0.0.0.0.0.0.
open0.0.0.0.0.0.0.0.
scattered0.0.0.0.0.0.0.0.
grouped crowded0.31000.0.0.0.0.3100
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total2.8150.0.0.0.2.815
GLn/a0.11000.3710.21000.649
crowded1.1361.0402.0294.217
normal0.7501.2371.7303.719
loose1.3370.4720.3711.929
open1.0400.21000.3711.532
scattered1.0410.3710.7502.128
grouped crowded0.21000.21000.0.0.370
grouped normal0.4710.5580.11001.041
heterogeneous0.11000.0.0.0.0.1100
total6.0154.1185.41615.56
GRn/a0.7500.0.1.8312.527
crowded6.7162.4279.31318.49
normal9.9134.22014.91029.17
loose14.7104.02114.51033.27
open13.2115.61719.3938.26
scattered10.9122.32811.01224.28
grouped crowded4.2201.0412.6267.915
grouped normal2.3280.7503.7216.716
heterogeneous1.1410.7500.5582.228
total63.7421.0977.74162.52
JUn/a0.0.0.0.0.0.0.0.
crowded4.9180.21004.1199.212
normal9.3120.3684.21913.89
loose3.4220.21001.3374.818
open2.1280.11000.7503.023
scattered1.2360.0.0.4711.632
grouped crowded0.21000.0.0.0.0.2100
grouped normal0.5570.0.0.0.0.557
heterogeneous0.0.0.0.0.4710.471
total21.560.84311.01033.32
LUn/a0.6570.0.0.0.0.657
crowded9.6120.4711.43511.411
normal10.8110.21002.62513.69
loose5.9160.0.1.4357.314
open4.6190.0.0.5585.118
scattered0.7500.0.0.21000.944
grouped crowded0.21000.0.0.0.0.2100
grouped normal1.1410.0.0.21001.337
heterogeneous1.1410.0.0.0.1.141
total34.640.5586.31641.42
NEn/a0.21000.0.0.0.0.2100
crowded2.4260.0.0.5582.923
normal6.4150.6571.1378.113
loose6.7140.3710.5587.513
open4.2190.0.0.7504.817
scattered1.4370.21000.0.1.534
grouped crowded0.4720.0.0.0.0.472
grouped normal0.8500.0.0.21001.045
heterogeneous1.4330.0.0.0.1.433
total24.041.0402.92227.93
NWn/a0.21000.21000.0.0.568
crowded0.5580.11001.0451.732
normal0.8500.5711.3322.623
loose0.9480.4720.0.1.339
open0.5710.0.0.21000.756
scattered0.21000.0.0.0.0.2100
grouped crowded0.21000.0.0.0.0.2100
grouped normal0.9490.0.0.0.0.949
heterogeneous0.0.0.0.0.0.0.0.
total4.3171.2402.6248.17
OWn/a0.4710.0.0.11000.558
crowded2.3271.1372.5255.914
normal0.8450.0.1.0431.830
loose0.8450.21000.9441.929
open1.7310.21001.6333.421
scattered1.9280.0.0.21002.127
grouped crowded0.3710.0.0.7501.041
grouped normal1.7310.11000.9432.724
heterogeneous0.0.0.0.0.0.0.0.
total10.0111.6317.91219.43
SGn/a0.7500.4711.2402.328
crowded5.4171.7337.31414.410
normal7.3151.1418.41316.99
loose3.7220.4713.5227.615
open1.8320.5582.1304.520
scattered2.1290.0.1.5353.622
grouped crowded0.8500.0.1.6352.328
grouped normal0.9450.21000.8491.831
heterogeneous0.21000.21000.7501.041
total22.984.52027.1654.63
SHn/a0.0.0.0.0.0.0.0.
crowded3.4200.0.0.21003.620
normal6.4120.0.0.4696.811
loose2.0280.0.0.0.2.028
open0.0.0.0.0.0.0.0.
scattered0.0.0.0.0.0.0.0.
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total11.830.0.0.55612.42
SOn/a0.0.0.0.0.0.0.0.
crowded7.3140.0.1.0448.313
normal9.9110.21001.23811.210
loose7.1140.0.0.6587.714
open4.7190.0.0.11004.818
scattered0.4710.0.0.0.0.471
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total29.430.21002.92432.52
SZn/a0.9450.21000.0.1.140
crowded3.7210.0.3.6217.314
normal2.3270.8453.9217.015
loose2.3270.4721.6314.319
open2.5260.21001.3354.020
scattered1.4350.11000.7502.327
grouped crowded0.11000.0.0.0.0.1100
grouped normal0.21000.0.0.0.0.2100
heterogeneous1.0410.0.0.7501.732
total14.591.73111.81028.04
TGn/a0.21000.0.0.0.0.2100
crowded6.5130.0.0.5497.012
normal6.2140.0.1.2397.412
loose2.1270.0.0.4602.624
open1.9300.0.0.2702.128
scattered0.21000.0.0.0.0.2100
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.11000.0.0.0.0.1100
total17.340.0.2.32519.73
TIn/a0.0.0.0.0.5580.558
crowded5.2180.94531.8637.86
normal4.4201.14117.21022.78
loose1.8311.4369.21412.412
open2.9251.73110.21314.710
scattered2.6260.7503.7217.015
grouped crowded1.2370.5582.8254.519
grouped normal2.3281.2382.8256.316
heterogeneous0.7501.0412.0303.722
total21.098.51480.13109.62
URn/a0.21000.21000.21000.557
crowded1.2371.2371.7304.118
normal1.0401.5321.2373.719
loose0.21000.3690.9441.434
open1.2370.21000.7502.028
scattered0.7500.21000.0.0.844
grouped crowded0.5570.0.0.0.0.557
grouped normal1.7300.4710.21002.226
heterogeneous0.21000.0.0.0.0.2100
total6.8133.8184.81615.45
VDn/a0.21000.0.0.4710.558
crowded19.780.7504.71825.17
normal22.382.4266.21631.06
loose10.7120.8452.62514.210
open8.6140.3711.43510.312
scattered6.0160.0.1.3387.315
grouped crowded1.6330.21000.21002.030
grouped normal2.7260.21000.0.2.925
heterogeneous0.9440.21000.0.1.141
total72.834.81816.6994.22
VSn/a0.6580.5580.9452.030
crowded5.2183.92011.11220.28
normal3.7225.01810.91219.69
loose4.5194.8188.51417.99
open5.6175.41810.51221.58
scattered5.8171.2384.61911.612
grouped crowded1.1411.2383.2235.418
grouped normal2.1290.8451.9304.919
heterogeneous0.4710.7502.3273.323
total29.0723.7853.84106.52
ZGn/a0.0.0.0.0.0.0.0.
crowded0.7480.0.0.7471.431
normal1.3330.21000.8442.223
loose0.6490.0.0.5591.136
open0.0.0.0.0.3710.371
scattered0.0.0.0.0.0.0.0.
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.4580.0.0.21000.650
total3.1170.21002.4205.76
ZHn/a0.0.0.0.0.0.0.0.
crowded12.6100.0.0.47013.010
normal21.270.0.1.04122.27
loose9.8120.0.0.0.9.812
open3.7210.0.0.21003.920
scattered0.21000.0.0.0.0.2100
grouped crowded0.21000.0.0.0.0.2100
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.21000.0.0.0.0.2100
total47.920.0.1.63349.41
Switzerlandn/a6.5172.0305.71814.211
crowded157.7317.710110.64286.02
normal191.2321.39103.34315.92
loose107.0416.91061.55185.43
open77.4516.71061.75155.83
scattered42.166.01726.5874.75
grouped crowded16.3103.92114.71134.97
grouped normal20.394.42012.31237.07
heterogeneous11.4123.32310.41325.18
total630.0192.24406.821128.91
© WSL, Swiss National Forest Inventory, 19.06.2020 #853183/319514
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a12.7125.8183.6241.6351.4381.04526.29
crowded124.0317.61014.2113.5239.4146.517175.13
heterogeneous11.7134.6211.4380.21003.2250.47121.510
normal, loose152.2324.5914.0114.32113.6125.020213.53
open, scattered47.6619.3109.31410.71312.4125.119104.44
crowded, clustered normal7.8169.5147.2164.22210.6132.13041.57
total356.0181.4449.7524.5850.6520.19582.41
inside perimetern/a0.0.1.0450.8500.6580.4710.0.2.827
crowded1.2415.4196.0183.2243.0262.62721.49
heterogeneous0.4711.2410.21001.1410.6580.6584.022
normal, loose2.1315.8184.1227.5155.4192.52727.48
open, scattered0.8504.4211.0456.6173.4242.72719.010
crowded, clustered normal0.21002.0321.9323.8234.2213.52315.611
total4.72019.81014.01122.9817.01011.91290.24
outside perimetern/a3.3244.0222.2302.2301.6352.52815.911
crowded18.91022.3918.998.6149.81437.66116.24
heterogeneous1.6357.1171.6352.9262.9261.93118.110
normal, loose20.31026.5819.5911.71212.61220.59111.14
open, scattered6.11815.0114.82017.61016.31117.41077.35
crowded, clustered normal1.24110.3144.6208.51410.51311.11346.16
total51.4685.3451.5551.6553.7591.13384.62
totaln/a16.01110.8136.6174.5213.4243.52344.87
crowded144.1345.3639.0615.41022.2946.65312.72
heterogeneous13.71212.9123.2254.3216.7172.92643.67
normal, loose174.6356.8537.5623.5831.6728.18352.02
open, scattered54.5638.7715.21134.9632.1725.38200.83
crowded, clustered normal9.21521.8913.71116.51025.4816.710103.34
total412.11186.41115.2299.02121.32123.121057.11
© WSL, Swiss National Forest Inventory, 19.06.2020 #853184/319515
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a14.5116.7175.4192.6281.8331.63532.58
crowded125.2318.01014.4113.92210.0146.917178.43
heterogeneous11.7134.8211.4380.21003.6230.47122.19
normal, loose154.1325.4814.6114.52114.4115.519218.53
open, scattered49.6620.799.71411.21313.2125.918110.44
crowded, clustered normal8.61510.2147.4164.62111.2132.72644.87
total363.8185.7452.9527.1854.3523.09606.81
inside perimetern/a0.0.1.2410.8500.8500.6580.0.3.424
crowded1.4385.4196.2183.2243.0262.62721.89
heterogeneous0.4711.2410.21001.1410.6580.6584.022
normal, loose2.1316.0184.1227.5155.6192.52727.88
open, scattered0.8504.8201.0456.6173.4242.72719.410
crowded, clustered normal0.21002.0322.1303.8234.2213.72316.011
total4.92020.5914.41123.1817.41012.11292.44
outside perimetern/a3.3244.4212.6282.4292.0323.32418.110
crowded18.91023.6919.198.8149.81438.46118.64
heterogeneous1.8337.3161.8332.9262.9261.93118.710
normal, loose20.51027.5820.3912.21213.01221.59115.04
open, scattered6.31815.5115.41918.51016.81017.81080.35
crowded, clustered normal1.24110.5134.7208.51410.81311.41347.06
total52.0688.7453.9553.4555.3594.43397.72
totaln/a17.81012.2138.8155.9184.4214.92054.06
crowded145.5347.0639.6616.01022.8847.85318.72
heterogeneous13.91213.3123.4244.3217.1162.92644.87
normal, loose176.7358.9538.9624.3833.0729.67361.32
open, scattered56.7540.9616.21136.3633.4726.58210.13
crowded, clustered normal10.01422.6914.31116.91026.2817.810107.94
total420.61194.91121.32103.62127.02129.521096.91
© WSL, Swiss National Forest Inventory, 19.06.2020 #853185/319516
NFI1
forest area
avalanches SilvaProtect · crown closure
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI1
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a13.496.8125.8133.3172.2211.42733.05
crowded126.5218.5714.983.9169.6106.912180.32
heterogeneous11.594.9141.1300.4503.1180.35821.37
normal, loose157.3226.7614.785.91314.484.714223.72
open, scattered51.3419.6710.01011.5915.986.013114.33
crowded, clustered normal9.4109.5105.8134.71410.593.31743.35
total369.5185.9352.3429.8555.8422.66615.81
inside perimetern/a0.0.1.0320.9331.1300.6410.2713.816
crowded1.3284.9145.5133.1184.1162.61921.57
heterogeneous0.3580.6410.2711.3280.7380.4503.517
normal, loose1.8236.6123.8166.4125.5133.61627.76
open, scattered0.6415.4131.8238.9104.0163.91624.76
crowded, clustered normal0.11002.1221.8234.4153.7163.81615.98
total4.21520.6714.1825.3518.6714.5897.23
outside perimetern/a2.5204.1153.6172.4202.2212.42017.18
crowded20.4723.8621.468.11011.0939.24123.93
heterogeneous1.3287.8111.7242.6193.3172.32119.17
normal, loose17.1728.2618.0711.6913.4821.36109.73
open, scattered7.11215.185.81315.4815.4817.9776.73
crowded, clustered normal0.9339.8104.9147.21110.01011.3944.05
total49.3488.7355.4347.3455.3394.32390.41
totaln/a15.9811.9910.3106.8125.0144.01653.94
crowded148.3247.1441.8415.1824.7648.64325.71
heterogeneous13.1913.383.1184.4157.1123.01843.95
normal, loose176.2261.5336.5523.9633.3529.65361.11
open, scattered59.0440.1517.6735.9535.3527.86215.62
crowded, clustered normal10.41021.4712.5916.3724.3618.47103.23
total422.90195.21121.81102.42129.71131.411103.50
© WSL, Swiss National Forest Inventory, 19.06.2020 #853186/319517
NFI2
forest area
avalanches SilvaProtect · crown closure
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectcrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a1.4381.4382.2300.6580.4710.0.6.118
crowded98.6416.81115.1114.3215.1195.120145.03
normal142.0315.3119.8142.6288.0154.222181.93
loose62.9515.5116.9164.42112.2122.230104.04
open34.3714.3115.7185.41911.9133.42474.95
scattered7.9166.8174.0224.4217.4162.13032.68
grouped crowded1.8334.0221.8330.6583.0260.47111.613
grouped normal2.8274.6212.4291.8331.8332.03215.411
heterogeneous4.4212.7281.8330.4710.8500.85010.914
total356.0181.4449.7524.5850.6520.19582.41
inside perimetern/a0.0.0.4711.0450.6580.0.0.0.2.032
crowded0.6585.8184.3213.6222.1301.24117.710
normal2.1313.9224.4214.4203.3241.73319.910
loose1.2414.3221.4384.8203.6232.03117.311
open0.4712.5281.0455.3194.3212.92616.511
scattered0.4710.8500.8501.4381.6351.2416.218
grouped crowded0.0.0.8500.21001.2411.0450.6583.823
grouped normal0.0.0.6580.6580.8500.6581.0453.624
heterogeneous0.0.0.6580.21000.8500.4711.3383.324
total4.72019.81014.01122.9817.01011.91290.24
outside perimetern/a0.0.1.0450.8500.6581.8330.8505.120
crowded16.71122.3917.41010.7135.71833.47106.24
normal21.1921.9915.81010.7139.61419.4998.54
loose8.11614.9116.6178.11511.81211.51361.06
open3.52412.4125.1199.71413.61113.51258.06
scattered0.6583.6232.8264.6216.0185.11922.79
grouped crowded0.4713.3241.2412.8271.8332.32911.913
grouped normal0.21002.5280.21002.0312.8263.12510.713
heterogeneous0.8503.3251.6352.4290.6582.03210.514
total51.4685.3451.5551.6553.7591.13384.62
totaln/a1.4382.9264.0221.9332.2300.85013.212
crowded115.8444.9636.9618.6913.01239.76268.92
normal165.2341.1630.0717.81020.9925.38300.32
loose72.2534.7714.81117.31027.6815.711182.33
open38.2729.2811.91220.4929.8719.89149.33
scattered8.91511.2137.61610.31315.0118.41561.46
grouped crowded2.2308.2153.2254.6215.8183.32427.28
grouped normal3.0267.7163.2254.6205.2196.01829.88
heterogeneous5.1206.6173.6233.5231.8334.12224.79
total412.11186.41115.2299.02121.32123.121057.11
© WSL, Swiss National Forest Inventory, 19.06.2020 #853187/319518
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