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NFI3
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regionarea of largest gap (aerial photo, 5 classes) %± %± %± %±
Western Jurano gap54.91.931.610.760.33.855.41.7
small gap19.61.526.310.116.82.919.21.3
medium gap11.51.236.911.111.82.512.11.1
large gap13.21.35.35.111.22.512.71.1
very large gap0.90.4.0.0.0.00.70.3
total100.0.100.0.100.0.100.0.
Eastern Jurano gap73.43.0.0.064.39.072.02.9
small gap8.91.9.0.017.97.29.91.9
medium gap5.11.5100.0.10.75.96.21.5
large gap11.62.2.0.07.14.911.12.0
very large gap0.90.7.0.0.0.00.80.6
total100.0.100.0.100.0.100.0.
Western Plateauno gap62.53.1.0.044.59.660.73.0
small gap13.02.2.0.029.58.814.72.2
medium gap8.81.8.0.011.16.19.11.8
large gap11.42.1.0.014.86.911.72.0
very large gap4.21.3.0.0.0.03.81.2
total100.0..0.0100.0.100.0.
Central Plateauno gap57.52.6100.0.61.46.458.12.4
small gap16.62.0.0.015.84.816.41.8
medium gap9.01.5.0.08.83.89.01.4
large gap14.11.8.0.012.34.413.81.7
very large gap2.80.9.0.01.81.72.70.8
total100.0.100.0.100.0.100.0.
Eastern Plateauno gap62.02.0.0.071.47.662.62.0
small gap14.91.5.0.020.06.815.21.5
medium gap10.41.3.0.0.0.09.81.2
large gap9.41.2.0.08.64.79.31.2
very large gap3.30.7.0.0.0.03.10.7
total100.0..0.0100.0.100.0.
Western Pre-Alpsno gap30.24.750.035.434.63.933.03.0
small gap27.14.550.035.420.73.323.42.7
medium gap16.73.8.0.020.73.319.02.5
large gap21.84.2.0.019.43.220.22.6
very large gap4.22.0.0.04.71.74.41.3
total100.0.100.0.100.0.100.0.
Central Pre-Alpsno gap32.62.850.017.733.62.933.32.0
small gap23.62.5.0.026.42.724.61.8
medium gap20.82.4.0.019.32.419.81.7
large gap19.72.450.017.718.52.419.61.7
very large gap3.21.1.0.02.30.92.70.7
total100.0.100.0.100.0.100.0.
Eastern Pre-Alpsno gap42.33.5100.0.49.13.446.22.4
small gap18.92.8.0.018.52.618.61.9
medium gap13.42.4.0.015.72.514.51.7
large gap21.42.9.0.014.32.417.61.9
very large gap4.01.4.0.02.31.03.10.8
total100.0.100.0.100.0.100.0.
Northwestern Alpsno gap30.34.050.011.828.03.330.12.5
small gap20.53.516.78.823.33.121.82.2
medium gap22.03.65.65.416.92.718.32.1
large gap26.53.822.29.826.53.226.32.4
very large gap0.80.85.65.45.31.63.51.0
total100.0.100.0.100.0.100.0.
Central Alpsno gap33.25.636.811.133.96.333.93.9
small gap16.74.415.88.419.75.317.73.2
medium gap17.84.521.19.412.54.416.23.0
large gap29.45.421.19.432.16.329.43.8
very large gap2.82.05.35.11.81.82.71.4
total100.0.100.0.100.0.100.0.
Northeastern Alpsno gap41.36.241.211.931.34.735.83.6
small gap23.75.35.95.714.23.516.72.8
medium gap9.63.711.87.820.14.015.62.7
large gap23.85.435.311.627.34.526.93.3
very large gap1.61.65.95.77.02.65.01.6
total100.0.100.0.100.0.100.0.
Southwestern Alpsno gap23.32.928.97.423.82.123.91.7
small gap25.73.026.37.128.92.227.81.8
medium gap22.32.931.57.522.12.022.71.6
large gap26.73.113.35.524.32.124.41.7
very large gap2.01.0.0.01.00.51.20.4
total100.0.100.0.100.0.100.0.
Southeastern Alpsno gap23.32.240.910.512.91.618.31.4
small gap18.32.09.16.125.02.121.61.4
medium gap22.12.227.39.523.62.123.01.5
large gap33.62.518.28.235.02.333.91.7
very large gap2.70.94.54.43.50.93.20.6
total100.0.100.0.100.0.100.0.
Southern Alpsno gap34.43.539.86.242.12.040.31.7
small gap17.92.820.75.122.51.721.41.4
medium gap21.93.114.04.314.01.415.71.2
large gap24.33.222.35.320.01.621.11.4
very large gap1.50.93.22.21.50.51.60.4
total100.0.100.0.100.0.100.0.
Switzerlandno gap47.50.839.43.434.80.942.00.6
small gap18.10.618.02.623.00.820.10.5
medium gap14.10.619.82.717.60.715.70.4
large gap17.90.620.02.822.30.819.70.5
very large gap2.40.32.91.22.40.32.40.2
total100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151108/137488
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: biogeographical region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap56.41.762.21.433.41.622.23.122.62.434.53.447.50.8
small gap18.11.315.01.021.21.426.73.318.12.217.62.718.10.6
medium gap10.71.19.00.818.61.322.23.122.82.421.43.014.10.6
large gap13.71.210.80.923.81.526.63.333.72.725.13.117.90.6
very large gap1.20.43.00.53.00.62.31.12.90.91.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap61.69.5.0.033.33.119.73.512.83.423.04.526.61.9
small gap15.37.0.0.024.02.825.23.920.24.131.15.024.31.8
medium gap7.75.2.0.016.02.426.03.929.84.724.14.621.41.7
large gap15.47.1.0.022.22.828.44.036.25.020.74.325.31.8
very large gap.0.0.0.04.41.40.80.81.11.11.11.12.30.6
total100.0..0.0100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap56.93.661.53.834.01.625.02.612.82.144.12.037.01.0
small gap17.62.816.82.920.91.431.22.827.62.721.11.722.30.9
medium gap15.42.68.12.118.31.322.42.523.02.612.91.417.00.8
large gap10.12.212.42.623.21.420.22.432.82.920.21.621.40.8
very large gap.0.01.20.93.60.61.10.63.81.21.80.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap56.71.562.11.333.71.123.01.717.41.539.91.642.00.6
small gap17.91.215.20.921.40.928.51.922.11.621.31.420.10.5
medium gap11.41.08.90.818.20.923.11.823.91.615.81.215.70.4
large gap13.11.011.00.823.31.024.01.833.71.821.31.419.80.5
very large gap0.90.32.80.43.40.41.40.53.00.71.70.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151109/137489
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonarea of largest gap (aerial photo, 5 classes) %± %± %± %±
AGno gap63.62.9.0.0.0.063.62.9
small gap13.32.1.0.0.0.013.32.1
medium gap7.61.6.0.0.0.07.61.6
large gap12.12.0.0.0.0.012.12.0
very large gap3.41.1.0.0.0.03.41.1
total100.0..0.0.0.0100.0.
AIno gap60.612.725.021.956.312.354.68.5
small gap6.66.450.025.212.58.414.25.9
medium gap6.66.4.0.018.89.811.35.4
large gap26.211.425.021.912.58.419.96.8
very large gap.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.
ARno gap53.18.950.035.662.512.156.07.1
small gap24.87.650.035.66.36.119.95.7
medium gap9.75.4.0.025.010.914.25.0
large gap12.45.8.0.06.36.19.94.3
very large gap.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.
BEno gap44.22.233.75.336.52.440.21.6
small gap17.91.720.04.522.62.120.01.3
medium gap18.31.718.84.414.41.816.81.2
large gap17.91.721.34.622.92.120.21.3
very large gap1.60.66.32.73.60.92.80.5
total100.0.100.0.100.0.100.0.
BL/BSno gap70.55.1.0.057.110.867.74.6
small gap7.42.9.0.014.37.78.92.8
medium gap8.73.1.0.019.08.610.83.1
large gap13.43.8.0.09.56.412.63.3
very large gap.0.0.0.0.0.0.0.0
total100.0..0.0100.0.100.0.
FRno gap50.34.228.617.140.75.546.33.3
small gap14.02.914.313.221.04.516.52.4
medium gap12.62.814.313.218.54.314.72.3
large gap18.93.328.617.117.34.218.62.6
very large gap4.21.714.313.22.51.73.91.3
total100.0.100.0.100.0.100.0.
GEno gap71.714.4.0.0.0.071.714.4
small gap.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0
large gap18.912.5.0.0.0.018.912.5
very large gap9.49.4.0.0.0.09.49.4
total100.0..0.0.0.0100.0.
GLno gap45.07.939.010.230.08.438.75.1
small gap17.46.0.0.020.07.313.93.6
medium gap7.54.221.78.610.05.511.83.3
large gap27.67.135.010.033.38.631.34.8
very large gap2.52.54.34.36.74.64.32.1
total100.0.100.0.100.0.100.0.
GRno gap22.22.114.93.117.21.819.01.2
small gap18.21.923.13.623.92.021.51.3
medium gap22.42.130.64.020.61.922.71.3
large gap34.32.429.84.034.22.233.61.5
very large gap2.90.81.51.04.00.93.20.6
total100.0.100.0.100.0.100.0.
JUno gap61.14.340.021.956.16.559.03.5
small gap11.92.9.0.024.65.715.42.6
medium gap12.73.020.017.915.84.813.82.5
large gap13.53.040.021.93.52.411.22.3
very large gap0.80.8.0.0.0.00.50.5
total100.0.100.0.100.0.100.0.
LUno gap44.73.5.0.042.28.043.83.2
small gap24.73.166.727.315.85.923.82.8
medium gap10.02.133.327.331.57.513.72.2
large gap16.62.6.0.010.55.015.42.3
very large gap4.01.4.0.0.0.03.31.2
total100.0.100.0.100.0.100.0.
NEno gap55.84.283.315.268.410.658.33.9
small gap22.53.616.715.321.19.422.13.3
medium gap11.62.7.0.05.35.110.42.4
large gap8.72.4.0.05.35.18.02.1
very large gap1.51.0.0.0.0.01.20.9
total100.0.100.0.100.0.100.0.
NWno gap27.810.612.511.853.013.034.07.5
small gap27.810.625.015.420.210.524.56.8
medium gap11.17.5.0.013.48.99.84.7
large gap27.810.662.517.26.76.626.97.0
very large gap5.65.5.0.06.76.64.93.4
total100.0.100.0.100.0.100.0.
OWno gap21.15.433.315.831.07.125.94.2
small gap26.35.933.315.826.26.826.94.3
medium gap22.95.6.0.023.86.621.33.9
large gap24.55.733.315.816.75.822.24.0
very large gap5.22.9.0.02.42.43.71.8
total100.0.100.0.100.0.100.0.
SGno gap46.94.457.110.846.94.047.62.8
small gap18.03.423.89.318.83.118.82.2
medium gap14.93.14.84.715.62.914.62.0
large gap17.23.39.56.416.32.916.22.1
very large gap3.11.54.84.72.51.22.91.0
total100.0.100.0.100.0.100.0.
SHno gap73.85.4.0.066.727.373.45.3
small gap11.54.1.0.033.327.412.54.2
medium gap8.23.5.0.0.0.07.83.4
large gap6.63.2.0.0.0.06.33.0
very large gap.0.0.0.0.0.0.0.0
total100.0..0.0100.0.100.0.
SOno gap70.53.5100.0.58.811.969.63.4
small gap11.22.4.0.011.87.811.22.3
medium gap3.51.4.0.023.510.35.31.6
large gap13.02.6.0.05.95.712.32.4
very large gap1.81.0.0.0.0.01.60.9
total100.0.100.0.100.0.100.0.
SZno gap32.95.137.717.243.56.037.73.8
small gap17.74.225.115.411.63.915.52.8
medium gap16.44.012.611.818.84.717.23.0
large gap28.34.924.715.221.85.025.33.4
very large gap4.72.3.0.04.32.44.31.6
total100.0.100.0.100.0.100.0.
TGno gap66.74.5.0.068.811.567.04.2
small gap17.13.6.0.018.89.817.33.4
medium gap5.42.1.0.0.0.04.71.9
large gap9.02.7.0.012.58.39.42.6
very large gap1.81.3.0.0.0.01.61.1
total100.0..0.0100.0.100.0.
TIno gap40.54.127.65.948.02.344.71.9
small gap18.13.232.86.221.21.921.51.6
medium gap20.83.417.25.012.01.514.31.3
large gap19.93.320.75.317.61.718.31.5
very large gap0.70.71.71.71.20.51.20.4
total100.0.100.0.100.0.100.0.
URno gap31.57.313.07.037.89.028.94.7
small gap19.66.234.810.010.45.720.54.2
medium gap17.05.921.78.613.86.417.23.9
large gap29.47.126.19.234.68.930.24.8
very large gap2.52.44.34.33.53.43.21.8
total100.0.100.0.100.0.100.0.
VDno gap48.72.444.89.241.35.147.32.1
small gap24.02.131.08.621.74.324.01.8
medium gap11.91.66.94.721.84.313.31.4
large gap13.31.617.27.014.13.613.61.5
very large gap2.10.7.0.01.11.11.80.6
total100.0.100.0.100.0.100.0.
VSno gap23.32.921.23.525.62.523.91.7
small gap25.73.024.83.730.42.627.81.8
medium gap22.32.926.33.821.42.322.71.6
large gap26.73.127.03.821.72.324.41.7
very large gap2.01.00.70.71.00.61.20.4
total100.0.100.0.100.0.100.0.
ZGno gap52.711.6.0.035.712.944.18.6
small gap26.310.2.0.021.411.123.57.3
medium gap10.57.1100.0.14.39.514.76.1
large gap10.57.1.0.014.39.511.85.6
very large gap.0.0.0.014.39.55.94.1
total100.0.100.0.100.0.100.0.
ZHno gap61.63.0.0.075.015.362.03.0
small gap13.22.1.0.012.511.713.22.1
medium gap12.42.1.0.0.0.012.02.0
large gap9.31.8.0.012.511.79.41.8
very large gap3.51.1.0.0.0.03.41.1
total100.0..0.0100.0.100.0.
Switzerlandno gap47.70.826.51.936.91.042.10.6
small gap18.00.624.31.822.30.920.10.5
medium gap14.00.621.41.717.00.815.70.4
large gap17.90.625.41.821.40.819.70.5
very large gap2.40.32.30.62.40.32.40.2
total100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151110/137490
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/ano gap59.51.660.81.435.62.026.61.534.43.547.60.8
small gap17.01.315.01.022.61.720.71.417.92.818.10.6
medium gap9.91.09.60.917.51.620.91.421.93.114.10.6
large gap12.81.111.30.920.71.729.71.624.33.217.90.6
very large gap0.90.33.30.53.60.82.20.51.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap60.19.8100.0.36.05.522.82.223.44.726.61.9
small gap15.97.3.0.025.35.023.32.230.95.124.31.8
medium gap8.05.4.0.013.33.923.62.223.44.721.41.7
large gap16.07.3.0.021.34.727.92.321.04.525.41.8
very large gap.0.0.0.04.02.32.40.81.21.22.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap56.83.760.34.540.12.123.11.444.42.037.01.0
small gap18.02.920.73.821.61.724.51.421.21.722.30.9
medium gap15.72.76.92.418.61.620.31.312.71.417.00.8
large gap9.62.211.22.917.01.628.61.520.11.621.30.8
very large gap.0.00.90.92.60.73.50.61.70.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap59.01.560.81.437.71.424.50.940.31.742.00.6
small gap17.11.115.51.022.31.222.80.921.41.420.10.5
medium gap10.80.99.40.817.81.121.10.915.71.215.70.4
large gap12.31.011.20.919.01.128.91.021.11.419.70.5
very large gap0.70.33.10.53.20.52.80.41.60.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151111/137491
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap60.21.131.52.140.12.723.32.923.32.234.43.547.50.8
small gap15.90.823.51.919.32.225.73.018.32.017.92.818.10.6
medium gap9.70.720.31.813.81.922.32.922.12.221.93.114.10.6
large gap11.90.721.91.823.62.326.73.133.62.524.33.217.90.6
very large gap2.30.32.80.73.21.02.01.02.70.91.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap61.69.530.64.236.15.321.23.515.33.423.44.726.61.9
small gap15.37.124.83.921.74.524.83.722.54.030.95.124.31.8
medium gap7.75.214.93.215.64.026.33.828.84.323.44.721.41.7
large gap15.47.124.83.923.04.627.03.831.54.421.04.525.41.8
very large gap.0.05.02.03.62.00.70.71.81.31.21.22.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap58.22.933.42.143.72.725.62.513.91.944.42.036.91.0
small gap19.02.323.31.915.62.030.42.624.82.321.21.722.30.9
medium gap12.21.919.01.716.52.021.42.322.12.312.71.417.00.8
large gap10.21.820.71.820.52.221.72.335.12.620.11.621.40.8
very large gap0.30.33.50.83.71.01.00.64.11.11.70.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap60.01.032.31.441.21.823.91.718.31.440.31.742.00.6
small gap16.30.823.51.318.01.427.81.821.61.421.41.420.10.5
medium gap10.00.619.21.215.11.322.71.623.01.515.71.215.70.4
large gap11.70.721.71.222.21.524.41.733.91.721.11.419.80.5
very large gap2.00.33.30.53.50.71.20.43.20.61.60.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151112/137492
NFI3
number of forest plots
avalanches SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regionarea of largest gap (aerial photo, 5 classes) %± %± %± %±
Western Jurano gap54.91.960.09.856.84.055.41.7
small gap19.61.516.07.318.13.119.21.3
medium gap11.51.28.05.415.52.912.11.1
large gap13.21.316.07.39.72.412.71.1
very large gap0.90.4.0.0.0.00.70.3
total100.0.100.0.100.0.100.0.
Eastern Jurano gap73.73.0.0.056.510.372.02.9
small gap9.11.9.0.017.47.99.91.9
medium gap5.01.5.0.017.47.96.21.5
large gap11.32.1.0.08.75.911.12.0
very large gap0.90.6.0.0.0.00.80.6
total100.0..0.0100.0.100.0.
Western Plateauno gap62.53.1.0.044.59.660.73.0
small gap13.02.2.0.029.58.814.72.2
medium gap8.81.8.0.011.16.19.11.8
large gap11.42.1.0.014.86.911.72.0
very large gap4.21.3.0.0.0.03.81.2
total100.0..0.0100.0.100.0.
Central Plateauno gap57.52.6100.0.61.46.458.12.4
small gap16.62.0.0.015.84.816.41.8
medium gap9.01.5.0.08.83.89.01.4
large gap14.11.8.0.012.34.413.81.7
very large gap2.80.9.0.01.81.72.70.8
total100.0.100.0.100.0.100.0.
Eastern Plateauno gap62.12.0.0.071.97.962.62.0
small gap14.81.5.0.021.97.315.21.5
medium gap10.31.3.0.0.0.09.81.2
large gap9.51.2.0.06.34.39.31.2
very large gap3.30.7.0.0.0.03.10.7
total100.0..0.0100.0.100.0.
Western Pre-Alpsno gap30.24.738.49.534.14.233.03.0
small gap27.14.523.18.320.73.623.42.7
medium gap16.73.87.75.223.03.819.02.5
large gap21.84.219.37.819.13.520.22.6
very large gap4.22.011.66.33.21.64.41.3
total100.0.100.0.100.0.100.0.
Central Pre-Alpsno gap32.62.821.27.135.83.133.32.0
small gap23.62.527.37.825.42.824.61.8
medium gap20.82.421.27.118.32.519.81.7
large gap19.72.430.38.017.92.519.61.7
very large gap3.21.1.0.02.51.02.70.7
total100.0.100.0.100.0.100.0.
Eastern Pre-Alpsno gap42.33.562.512.148.83.546.22.4
small gap18.92.825.010.817.72.718.61.9
medium gap13.42.46.36.116.32.614.51.7
large gap21.42.96.36.114.82.517.61.9
very large gap4.01.4.0.02.51.13.10.8
total100.0.100.0.100.0.100.0.
Northwestern Alpsno gap30.34.032.25.929.03.830.12.5
small gap20.53.524.25.422.13.421.82.2
medium gap22.03.614.54.516.63.118.32.1
large gap26.53.824.25.426.93.726.32.4
very large gap0.80.84.82.75.51.93.51.0
total100.0.100.0.100.0.100.0.
Central Alpsno gap33.25.619.47.145.47.533.93.9
small gap16.74.432.38.49.14.417.73.2
medium gap17.84.519.47.111.44.816.23.0
large gap29.45.425.67.831.97.029.43.8
very large gap2.82.03.23.22.32.32.71.4
total100.0.100.0.100.0.100.0.
Northeastern Alpsno gap41.36.238.88.130.05.135.83.6
small gap23.75.311.15.213.83.916.72.8
medium gap9.63.716.66.219.94.515.62.7
large gap23.85.427.97.528.85.126.93.3
very large gap1.61.65.53.87.52.95.01.6
total100.0.100.0.100.0.100.0.
Southwestern Alpsno gap23.32.921.23.525.62.523.91.7
small gap25.73.024.83.730.42.627.81.8
medium gap22.32.926.33.821.42.322.71.6
large gap26.73.127.03.821.72.324.41.7
very large gap2.01.00.70.71.00.61.20.4
total100.0.100.0.100.0.100.0.
Southeastern Alpsno gap23.32.215.33.413.91.918.31.4
small gap18.32.022.54.024.82.321.61.4
medium gap22.12.228.84.322.12.323.01.5
large gap33.62.531.54.435.12.633.91.7
very large gap2.70.91.81.34.11.13.20.6
total100.0.100.0.100.0.100.0.
Southern Alpsno gap34.43.523.44.744.42.040.31.7
small gap17.92.830.95.121.21.721.41.4
medium gap21.93.123.44.712.71.415.71.2
large gap24.33.221.04.520.11.621.11.4
very large gap1.50.91.21.21.70.51.60.4
total100.0.100.0.100.0.100.0.
Switzerlandno gap47.60.826.51.936.91.042.00.6
small gap18.10.624.41.822.30.920.10.5
medium gap14.00.621.41.717.00.815.70.4
large gap17.90.625.41.821.40.819.70.5
very large gap2.40.32.40.62.40.32.40.2
total100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151113/137493
NFI3
number of forest plots
landslide/mudflow SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: biogeographical region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
landslide/mudflow SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap56.31.762.11.433.41.622.23.122.62.434.53.447.40.8
small gap18.11.315.01.021.21.426.73.318.12.217.62.718.10.6
medium gap10.71.19.10.818.61.322.23.122.82.421.43.014.10.6
large gap13.71.210.80.923.81.526.63.333.72.725.13.117.90.6
very large gap1.20.43.00.53.00.62.31.12.90.91.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap59.34.752.98.650.83.824.34.017.64.145.74.142.61.9
small gap13.03.214.76.114.72.735.74.524.74.722.53.420.91.6
medium gap15.73.58.84.912.42.522.63.931.85.015.12.917.51.5
large gap12.03.117.66.518.62.916.53.525.94.816.63.017.61.5
very large gap.0.05.94.03.41.40.90.9.0.0.0.01.40.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap56.94.763.94.230.61.522.92.511.31.940.22.132.91.0
small gap21.13.917.33.322.81.426.82.625.92.622.31.823.10.9
medium gap12.83.27.52.318.81.323.92.522.62.514.01.517.80.8
large gap9.22.811.32.723.91.425.42.636.12.921.21.823.40.9
very large gap.0.0.0.03.90.61.10.64.01.22.20.62.70.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap56.71.562.11.333.71.123.01.717.41.539.91.642.00.6
small gap17.91.215.20.921.40.928.51.922.11.621.31.420.10.5
medium gap11.41.08.90.818.20.923.11.823.91.615.81.215.70.4
large gap13.11.011.00.823.31.024.01.833.71.821.31.419.80.5
very large gap0.90.32.80.43.40.41.40.53.00.71.70.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151114/137494
NFI3
number of forest plots
landslide/mudflow SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
landslide/mudflow SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonarea of largest gap (aerial photo, 5 classes) %± %± %± %±
AGno gap63.12.977.813.8.0.063.62.9
small gap13.32.111.110.5.0.013.32.1
medium gap7.81.7.0.0.0.07.61.6
large gap12.22.011.110.5.0.012.12.0
very large gap3.51.2.0.0.0.03.41.1
total100.0.100.0..0.0100.0.
AIno gap60.612.750.035.750.011.754.68.5
small gap6.66.450.035.716.78.914.25.9
medium gap6.66.4.0.016.78.911.35.4
large gap26.211.4.0.016.78.919.96.8
very large gap.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.
ARno gap53.18.955.616.766.715.756.07.1
small gap24.87.611.110.611.110.619.95.7
medium gap9.75.422.214.022.214.014.25.0
large gap12.45.811.110.6.0.09.94.3
very large gap.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.
BEno gap44.22.251.25.432.62.440.21.6
small gap17.91.711.63.524.52.220.01.3
medium gap18.31.78.12.916.71.916.81.2
large gap17.91.725.64.721.92.120.21.3
very large gap1.60.63.52.04.21.02.80.5
total100.0.100.0.100.0.100.0.
BL/BSno gap70.55.162.517.153.813.867.74.6
small gap7.42.9.0.023.111.78.92.8
medium gap8.73.125.015.415.410.010.83.1
large gap13.43.812.511.77.77.412.63.3
very large gap.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.
FRno gap50.34.250.017.738.75.546.33.3
small gap14.02.937.517.118.84.416.52.4
medium gap12.62.8.0.020.04.514.72.3
large gap18.93.312.511.718.84.418.62.6
very large gap4.21.7.0.03.82.13.91.3
total100.0.100.0.100.0.100.0.
GEno gap71.714.4.0.0.0.071.714.4
small gap.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0
large gap18.912.5.0.0.0.018.912.5
very large gap9.49.4.0.0.0.09.49.4
total100.0..0.0.0.0100.0.
GLno gap45.07.941.714.331.67.338.75.1
small gap17.46.08.38.012.25.113.93.6
medium gap7.54.28.38.017.05.911.83.3
large gap27.67.133.313.634.37.431.34.8
very large gap2.52.58.38.04.93.44.32.1
total100.0.100.0.100.0.100.0.
GRno gap22.22.124.33.914.61.719.01.2
small gap18.21.922.03.724.22.021.51.3
medium gap22.42.128.54.121.41.922.71.3
large gap34.32.425.23.935.42.233.61.5
very large gap2.90.8.0.04.41.03.20.6
total100.0.100.0.100.0.100.0.
JUno gap61.14.346.712.957.47.259.03.5
small gap11.92.926.711.421.36.015.42.6
medium gap12.73.026.711.412.84.913.82.5
large gap13.53.0.0.08.54.111.22.3
very large gap0.80.8.0.0.0.00.50.5
total100.0.100.0.100.0.100.0.
LUno gap44.73.540.021.939.08.143.83.2
small gap24.73.1.0.022.26.923.82.8
medium gap10.02.140.021.930.57.713.72.2
large gap16.62.620.017.98.34.615.42.3
very large gap4.01.4.0.0.0.03.31.2
total100.0.100.0.100.0.100.0.
NEno gap55.84.266.711.185.713.258.33.9
small gap22.53.622.29.814.313.322.13.3
medium gap11.62.75.65.4.0.010.42.4
large gap8.72.45.65.4.0.08.02.1
very large gap1.51.0.0.0.0.01.20.9
total100.0.100.0.100.0.100.0.
NWno gap27.810.650.025.236.511.134.07.5
small gap27.810.625.021.921.29.524.56.8
medium gap11.17.5.0.010.67.19.84.7
large gap27.810.625.021.926.510.226.97.0
very large gap5.65.5.0.05.35.24.93.4
total100.0.100.0.100.0.100.0.
OWno gap21.15.437.517.230.27.025.94.2
small gap26.35.925.015.427.96.926.94.3
medium gap22.95.612.511.720.96.221.33.9
large gap24.55.725.015.418.66.022.24.0
very large gap5.22.9.0.02.32.33.71.8
total100.0.100.0.100.0.100.0.
SGno gap46.94.479.28.343.34.047.62.8
small gap18.03.48.35.621.03.318.82.2
medium gap14.93.14.24.115.92.914.62.0
large gap17.23.34.24.117.23.016.22.1
very large gap3.11.54.24.12.51.32.91.0
total100.0.100.0.100.0.100.0.
SHno gap73.85.466.727.3.0.073.45.3
small gap11.54.133.327.4.0.012.54.2
medium gap8.23.5.0.0.0.07.83.4
large gap6.63.2.0.0.0.06.33.0
very large gap.0.0.0.0.0.0.0.0
total100.0.100.0..0.0100.0.
SOno gap70.53.558.314.266.719.269.63.4
small gap11.22.48.38.016.715.211.22.3
medium gap3.51.425.012.516.715.25.31.6
large gap13.02.68.38.0.0.012.32.4
very large gap1.81.0.0.0.0.01.60.9
total100.0.100.0.100.0.100.0.
SZno gap32.95.190.09.435.95.937.73.8
small gap17.74.2.0.014.94.415.52.8
medium gap16.44.010.09.519.44.817.23.0
large gap28.34.9.0.025.45.325.33.4
very large gap4.72.3.0.04.42.54.31.6
total100.0.100.0.100.0.100.0.
TGno gap66.74.533.327.376.911.667.04.2
small gap17.13.633.327.315.410.017.33.4
medium gap5.42.1.0.0.0.04.71.9
large gap9.02.733.327.37.77.49.42.6
very large gap1.81.3.0.0.0.01.61.1
total100.0.100.0.100.0.100.0.
TIno gap40.54.150.14.544.62.444.71.9
small gap18.13.223.03.822.22.021.51.6
medium gap20.83.413.83.112.21.614.31.3
large gap19.93.313.13.119.31.918.31.5
very large gap0.70.7.0.01.70.61.20.4
total100.0.100.0.100.0.100.0.
URno gap31.57.327.39.526.58.128.94.7
small gap19.66.222.79.020.07.320.54.2
medium gap17.05.918.28.216.76.817.23.9
large gap29.47.127.39.533.48.630.24.8
very large gap2.52.44.54.53.33.33.21.8
total100.0.100.0.100.0.100.0.
VDno gap48.72.444.48.341.25.347.32.1
small gap24.02.119.46.625.94.824.01.8
medium gap11.91.619.46.617.74.113.31.4
large gap13.31.613.95.815.33.913.61.5
very large gap2.10.72.82.7.0.01.80.6
total100.0.100.0.100.0.100.0.
VSno gap23.32.926.63.923.32.423.91.7
small gap25.73.032.04.127.32.527.81.8
medium gap22.32.923.43.722.62.322.71.6
large gap26.73.117.23.325.82.524.41.7
very large gap2.01.00.80.80.90.51.20.4
total100.0.100.0.100.0.100.0.
ZGno gap52.711.6.0.035.712.944.18.6
small gap26.310.2.0.021.411.123.57.3
medium gap10.57.1.0.021.411.114.76.1
large gap10.57.1.0.014.39.511.85.6
very large gap.0.0100.0.7.17.05.94.1
total100.0.100.0.100.0.100.0.
ZHno gap61.63.0100.0.66.719.362.03.0
small gap13.22.1.0.016.715.213.22.1
medium gap12.42.1.0.0.0.012.02.0
large gap9.31.8.0.016.715.29.41.8
very large gap3.51.1.0.0.0.03.41.1
total100.0.100.0.100.0.100.0.
Switzerlandno gap47.60.842.61.932.91.042.10.6
small gap18.00.620.91.623.10.920.10.5
medium gap14.10.617.51.517.80.815.70.4
large gap17.90.617.61.523.40.919.70.5
very large gap2.40.31.40.42.70.32.40.2
total100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151115/137495
NFI3
number of forest plots
landslide/mudflow SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
landslide/mudflow SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/ano gap59.31.660.81.435.62.026.61.534.43.547.50.8
small gap17.01.315.01.022.61.720.71.417.92.818.10.6
medium gap10.01.09.70.917.51.620.91.421.93.114.10.6
large gap12.91.111.20.920.71.729.71.624.33.217.90.6
very large gap0.90.33.30.53.60.82.20.51.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap58.04.959.48.760.55.629.72.645.74.142.61.9
small gap15.03.69.45.214.54.024.92.422.83.421.01.6
medium gap16.03.76.34.310.53.522.32.414.62.917.51.5
large gap11.03.121.97.313.23.920.82.316.83.117.61.5
very large gap.0.03.13.11.31.32.20.8.0.01.30.4
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap57.84.761.45.236.82.020.91.340.82.133.01.0
small gap20.23.823.94.523.11.824.01.422.21.823.10.9
medium gap12.83.26.82.719.01.620.91.313.81.517.80.8
large gap9.22.88.02.918.11.630.81.521.11.823.40.9
very large gap.0.0.0.03.00.73.50.62.10.62.70.3
total100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap59.01.560.81.437.71.424.50.940.31.742.00.6
small gap17.11.115.51.022.31.222.80.921.41.420.10.5
medium gap10.80.99.40.817.81.121.10.915.71.215.70.4
large gap12.31.011.20.919.01.128.91.021.11.419.70.5
very large gap0.70.33.10.53.20.52.80.41.60.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151116/137496
NFI3
number of forest plots
landslide/mudflow SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
landslide/mudflow SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap60.11.131.52.140.12.723.32.923.32.234.43.547.50.8
small gap15.90.823.51.919.32.225.73.018.32.017.92.818.10.6
medium gap9.80.720.31.813.81.922.32.922.12.221.93.114.10.6
large gap11.90.721.91.823.62.326.73.133.62.524.33.217.90.6
very large gap2.30.32.80.73.21.02.01.02.70.91.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap58.34.344.25.455.75.626.63.924.04.445.74.142.61.9
small gap13.63.019.84.312.73.732.04.121.94.222.83.421.01.6
medium gap13.63.010.53.311.43.623.43.731.24.714.62.917.51.5
large gap13.63.022.14.515.24.017.23.322.94.316.83.117.61.5
very large gap0.80.83.52.05.12.50.80.8.0.0.0.01.30.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap59.43.531.12.039.02.723.32.411.61.740.82.132.91.0
small gap21.82.924.21.817.92.127.32.524.92.322.21.823.10.9
medium gap10.12.219.41.717.52.122.62.321.82.213.81.517.80.8
large gap8.62.021.41.822.42.325.82.537.32.621.11.823.40.9
very large gap.0.03.80.83.31.00.90.54.51.12.10.62.70.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap60.01.032.31.441.21.823.91.718.31.440.31.742.00.6
small gap16.30.823.51.318.01.427.81.821.61.421.41.420.10.5
medium gap10.00.619.21.215.11.322.71.623.01.515.71.215.70.4
large gap11.70.721.71.222.21.524.41.733.91.721.11.419.80.5
very large gap2.00.33.30.53.50.71.20.43.20.61.60.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151117/137497
NFI3
number of forest plots
landslide/mudflow SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
landslide/mudflow SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regionarea of largest gap (aerial photo, 5 classes) %± %± %± %±
Western Jurano gap54.91.954.95.559.25.055.41.7
small gap19.61.515.94.019.44.019.21.3
medium gap11.51.217.14.212.23.312.11.1
large gap13.21.312.23.69.22.912.71.1
very large gap0.90.4.0.0.0.00.70.3
total100.0.100.0.100.0.100.0.
Eastern Jurano gap73.43.072.210.545.515.072.02.9
small gap8.91.911.17.427.313.49.91.9
medium gap5.11.511.17.418.211.66.21.5
large gap11.62.25.65.49.18.711.12.0
very large gap0.90.7.0.0.0.00.80.6
total100.0.100.0.100.0.100.0.
Western Plateauno gap62.53.1.0.052.310.460.73.0
small gap13.02.250.025.025.99.114.72.2
medium gap8.81.8.0.013.17.09.11.8
large gap11.42.150.025.08.75.911.72.0
very large gap4.21.3.0.0.0.03.81.2
total100.0.100.0.100.0.100.0.
Central Plateauno gap57.52.668.410.759.07.958.12.4
small gap16.62.0.0.023.16.816.41.8
medium gap9.01.510.57.07.74.39.01.4
large gap14.11.815.88.410.34.913.81.7
very large gap2.80.95.35.1.0.02.70.8
total100.0.100.0.100.0.100.0.
Eastern Plateauno gap62.02.066.715.773.18.762.62.0
small gap14.91.511.110.523.18.315.21.5
medium gap10.41.3.0.0.0.09.81.2
large gap9.41.222.213.93.83.89.31.2
very large gap3.30.7.0.0.0.03.10.7
total100.0.100.0.100.0.100.0.
Western Pre-Alpsno gap30.24.763.211.030.74.033.03.0
small gap27.14.515.88.421.83.623.42.7
medium gap16.73.810.57.121.83.619.02.5
large gap21.84.210.57.120.33.520.22.6
very large gap4.22.0.0.05.31.94.41.3
total100.0.100.0.100.0.100.0.
Central Pre-Alpsno gap32.62.842.39.733.23.033.32.0
small gap23.62.523.18.325.92.824.61.8
medium gap20.82.47.75.219.82.519.81.7
large gap19.72.426.98.718.62.519.61.7
very large gap3.21.1.0.02.41.02.70.7
total100.0.100.0.100.0.100.0.
Eastern Pre-Alpsno gap42.33.574.27.845.73.646.22.4
small gap18.92.86.54.420.22.918.61.9
medium gap13.42.412.96.016.02.714.51.7
large gap21.42.93.23.216.02.717.61.9
very large gap4.01.43.23.22.11.13.10.8
total100.0.100.0.100.0.100.0.
Northwestern Alpsno gap30.34.036.67.528.33.530.12.5
small gap20.53.519.56.223.53.321.82.2
medium gap22.03.612.25.116.92.918.32.1
large gap26.53.824.46.726.53.426.32.4
very large gap0.80.87.34.14.81.73.51.0
total100.0.100.0.100.0.100.0.
Central Alpsno gap33.25.640.79.531.26.733.93.9
small gap16.74.418.57.518.85.717.73.2
medium gap17.84.514.86.814.65.116.23.0
large gap29.45.422.28.033.36.829.43.8
very large gap2.82.03.73.62.12.12.71.4
total100.0.100.0.100.0.100.0.
Northeastern Alpsno gap41.36.247.810.929.44.735.83.6
small gap23.75.314.27.612.73.416.72.8
medium gap9.63.74.74.622.04.215.62.7
large gap23.85.423.79.329.64.726.93.3
very large gap1.61.69.56.46.32.55.01.6
total100.0.100.0.100.0.100.0.
Southwestern Alpsno gap23.32.926.63.923.32.423.91.7
small gap25.73.032.04.127.32.527.81.8
medium gap22.32.923.43.722.62.322.71.6
large gap26.73.117.23.325.82.524.41.7
very large gap2.01.00.80.80.90.51.20.4
total100.0.100.0.100.0.100.0.
Southeastern Alpsno gap23.32.224.04.411.61.718.31.4
small gap18.32.021.94.224.92.321.61.4
medium gap22.12.231.24.721.82.223.01.5
large gap33.62.522.94.337.32.633.91.7
very large gap2.70.9.0.04.51.13.20.6
total100.0.100.0.100.0.100.0.
Southern Alpsno gap34.43.545.74.140.82.140.31.7
small gap17.92.822.83.422.21.821.41.4
medium gap21.93.114.62.913.81.515.71.2
large gap24.33.216.83.121.11.821.11.4
very large gap1.50.9.0.02.10.61.60.4
total100.0.100.0.100.0.100.0.
Switzerlandno gap47.50.842.61.932.91.042.00.6
small gap18.10.621.01.623.10.920.10.5
medium gap14.10.617.51.517.80.815.70.4
large gap17.90.617.61.523.40.919.70.5
very large gap2.40.31.30.42.70.32.40.2
total100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151118/137498
NFI3
number of forest plots
processes in channels SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: biogeographical region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
processes in channels SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap56.41.762.21.433.51.622.23.122.62.434.53.447.50.8
small gap18.11.315.01.021.21.426.73.318.12.217.62.718.10.6
medium gap10.71.19.00.818.61.322.23.122.82.421.43.014.00.6
large gap13.71.210.80.923.71.526.63.333.72.725.13.117.90.6
very large gap1.20.43.00.53.00.62.31.12.90.91.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap59.34.661.04.131.01.522.12.212.31.940.31.933.10.9
small gap17.73.617.03.222.61.329.92.425.92.622.41.623.30.8
medium gap11.53.09.22.418.91.224.12.322.02.514.31.417.90.8
large gap11.53.012.12.723.61.323.02.336.42.821.21.623.10.8
very large gap.0.00.70.73.90.60.90.53.51.11.90.52.60.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap55.54.963.211.161.44.831.36.515.04.256.07.047.02.5
small gap16.83.715.88.410.93.125.56.124.75.022.05.918.41.9
medium gap17.83.8.0.06.92.519.65.635.65.614.04.917.11.9
large gap9.93.015.88.417.83.821.75.823.34.98.03.815.91.8
very large gap.0.05.35.13.01.72.01.91.41.4.0.01.50.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap56.71.562.11.333.71.123.01.717.41.539.91.642.00.6
small gap17.91.215.20.921.40.928.51.922.11.621.31.420.10.5
medium gap11.41.08.90.818.20.923.11.823.91.615.81.215.70.4
large gap13.11.011.00.823.31.024.01.833.71.821.31.419.80.5
very large gap0.90.32.80.43.40.41.40.53.00.71.70.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151119/137499
NFI3
number of forest plots
processes in channels SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
processes in channels SilvaProtect
n/ainside perimeteroutside perimetertotal
cantonarea of largest gap (aerial photo, 5 classes) %± %± %± %±
AGno gap63.62.9.0.0.0.063.62.9
small gap13.32.1.0.0.0.013.32.1
medium gap7.61.6.0.0.0.07.61.6
large gap12.12.0.0.0.0.012.12.0
very large gap3.41.1.0.0.0.03.41.1
total100.0..0.0.0.0100.0.
AIno gap60.612.747.411.4100.0.54.68.5
small gap6.66.421.19.4.0.014.25.9
medium gap6.66.415.88.4.0.011.35.4
large gap26.211.415.88.4.0.019.96.8
very large gap.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.
ARno gap53.18.950.014.483.315.256.07.1
small gap24.87.616.710.8.0.019.95.7
medium gap9.75.433.313.7.0.014.25.0
large gap12.45.8.0.016.715.39.94.3
very large gap.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.
BEno gap44.22.232.42.356.35.940.21.6
small gap17.91.723.92.112.73.920.01.3
medium gap18.31.716.31.98.53.316.81.2
large gap17.91.723.12.119.74.720.21.3
very large gap1.60.64.31.02.82.02.80.5
total100.0.100.0.100.0.100.0.
BL/BSno gap70.55.150.014.466.715.767.74.6
small gap7.42.925.012.5.0.08.92.8
medium gap8.73.116.710.822.213.910.83.1
large gap13.43.88.38.011.110.512.63.3
very large gap.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.
FRno gap50.34.237.85.466.719.346.33.3
small gap14.02.919.54.433.319.316.52.4
medium gap12.62.819.54.4.0.014.72.3
large gap18.93.319.54.4.0.018.62.6
very large gap4.21.73.72.1.0.03.91.3
total100.0.100.0.100.0.100.0.
GEno gap71.714.4.0.0.0.071.714.4
small gap.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0
large gap18.912.5.0.0.0.018.912.5
very large gap9.49.4.0.0.0.09.49.4
total100.0..0.0.0.0100.0.
GLno gap45.07.935.67.427.313.538.75.1
small gap17.46.011.95.09.18.713.93.6
medium gap7.54.219.06.1.0.011.83.3
large gap27.67.126.36.863.614.531.34.8
very large gap2.52.57.14.0.0.04.32.1
total100.0.100.0.100.0.100.0.
GRno gap22.22.115.41.623.44.419.01.2
small gap18.21.923.61.924.54.421.51.3
medium gap22.42.121.61.929.84.722.71.3
large gap34.32.435.52.221.34.233.61.5
very large gap2.90.83.90.91.11.13.20.6
total100.0.100.0.100.0.100.0.
JUno gap61.14.362.57.640.910.559.03.5
small gap11.92.922.56.622.79.015.42.6
medium gap12.73.010.04.827.39.513.82.5
large gap13.53.05.03.59.16.111.22.3
very large gap0.80.8.0.0.0.00.50.5
total100.0.100.0.100.0.100.0.
LUno gap44.73.536.97.866.727.243.83.2
small gap24.73.121.06.6.0.023.82.8
medium gap10.02.131.57.533.327.313.72.2
large gap16.62.610.55.0.0.015.42.3
very large gap4.01.4.0.0.0.03.31.2
total100.0.100.0.100.0.100.0.
NEno gap55.84.287.511.664.711.658.33.9
small gap22.53.612.511.723.510.322.13.3
medium gap11.62.7.0.05.95.710.42.4
large gap8.72.4.0.05.95.78.02.1
very large gap1.51.0.0.0.0.01.20.9
total100.0.100.0.100.0.100.0.
NWno gap27.810.629.610.3100.0.34.07.5
small gap27.810.625.19.8.0.024.56.8
medium gap11.17.510.16.8.0.09.84.7
large gap27.810.630.210.4.0.026.97.0
very large gap5.65.55.05.0.0.04.93.4
total100.0.100.0.100.0.100.0.
OWno gap21.15.431.16.933.319.325.94.2
small gap26.35.926.76.633.319.326.94.3
medium gap22.95.620.06.016.715.321.33.9
large gap24.55.720.06.016.715.322.24.0
very large gap5.22.92.22.2.0.03.71.8
total100.0.100.0.100.0.100.0.
SGno gap46.94.445.33.890.98.647.62.8
small gap18.03.420.63.1.0.018.82.2
medium gap14.93.115.32.8.0.014.62.0
large gap17.23.316.52.8.0.016.22.1
very large gap3.11.52.41.29.18.72.91.0
total100.0.100.0.100.0.100.0.
SHno gap73.85.4.0.066.727.373.45.3
small gap11.54.1.0.033.327.412.54.2
medium gap8.23.5.0.0.0.07.83.4
large gap6.63.2.0.0.0.06.33.0
very large gap.0.0.0.0.0.0.0.0
total100.0..0.0100.0.100.0.
SOno gap70.53.566.713.650.020.569.63.4
small gap11.22.48.38.016.715.311.22.3
medium gap3.51.416.710.833.319.35.31.6
large gap13.02.68.38.0.0.012.32.4
very large gap1.81.0.0.0.0.01.60.9
total100.0.100.0.100.0.100.0.
SZno gap32.95.136.35.8100.0.37.73.8
small gap17.74.214.54.3.0.015.52.8
medium gap16.44.020.34.9.0.017.23.0
large gap28.34.924.65.2.0.025.33.4
very large gap4.72.34.32.4.0.04.31.6
total100.0.100.0.100.0.100.0.
TGno gap66.74.568.811.5.0.067.04.2
small gap17.13.618.89.8.0.017.33.4
medium gap5.42.1.0.0.0.04.71.9
large gap9.02.712.58.3.0.09.42.6
very large gap1.81.3.0.0.0.01.61.1
total100.0.100.0..0.0100.0.
TIno gap40.54.144.72.262.28.044.71.9
small gap18.13.222.71.918.96.421.51.6
medium gap20.83.412.31.516.26.114.31.3
large gap19.93.319.01.72.72.718.31.5
very large gap0.70.71.40.5.0.01.20.4
total100.0.100.0.100.0.100.0.
URno gap31.57.322.16.257.118.728.94.7
small gap19.66.224.56.4.0.020.54.2
medium gap17.05.917.85.714.313.317.23.9
large gap29.47.133.47.014.313.330.24.8
very large gap2.52.42.22.214.313.33.21.8
total100.0.100.0.100.0.100.0.
VDno gap48.72.441.74.944.411.747.32.1
small gap24.02.123.34.227.810.624.01.8
medium gap11.91.618.53.816.78.813.31.4
large gap13.31.615.53.611.17.413.61.5
very large gap2.10.71.01.0.0.01.80.6
total100.0.100.0.100.0.100.0.
VSno gap23.32.922.82.134.56.423.91.7
small gap25.73.029.42.323.65.727.81.8
medium gap22.32.923.52.118.25.222.71.6
large gap26.73.123.52.121.95.624.41.7
very large gap2.01.00.80.41.81.81.20.4
total100.0.100.0.100.0.100.0.
ZGno gap52.711.635.712.9.0.044.18.6
small gap26.310.221.411.1.0.023.57.3
medium gap10.57.114.39.5100.0.14.76.1
large gap10.57.114.39.5.0.011.85.6
very large gap.0.014.39.5.0.05.94.1
total100.0.100.0.100.0.100.0.
ZHno gap61.93.066.719.3.0.062.03.0
small gap13.12.116.715.2.0.013.22.1
medium gap12.32.0.0.0.0.012.02.0
large gap9.21.816.715.2.0.09.41.8
very large gap3.51.1.0.0.0.03.41.1
total100.0.100.0..0.0100.0.
Switzerlandno gap47.70.833.00.947.12.542.10.6
small gap18.00.623.40.818.41.920.10.5
medium gap14.00.617.90.817.21.915.70.4
large gap17.80.623.20.815.81.819.70.5
very large gap2.40.32.60.31.50.62.40.2
total100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151120/137500
NFI3
number of forest plots
processes in channels SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
processes in channels SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
n/ano gap59.51.660.81.435.72.026.61.534.43.547.60.8
small gap17.01.315.01.022.51.720.71.417.92.818.10.6
medium gap9.91.09.60.917.51.620.91.421.93.114.10.6
large gap12.81.111.20.920.61.729.71.624.33.217.90.6
very large gap0.90.33.30.53.60.82.20.51.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap60.24.658.75.136.72.021.71.240.62.033.10.9
small gap16.83.523.94.422.81.724.81.322.51.723.40.8
medium gap11.53.07.62.819.01.621.21.213.91.417.90.8
large gap11.53.09.83.118.51.629.11.421.31.623.10.8
very large gap.0.0.0.03.00.73.20.51.80.52.60.3
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap53.45.366.79.674.56.431.23.458.47.147.12.5
small gap18.94.18.35.612.84.920.43.020.85.918.52.0
medium gap18.94.14.24.16.43.621.53.014.65.117.21.9
large gap8.93.016.77.66.43.624.23.16.23.515.81.8
very large gap.0.04.24.1.0.02.71.2.0.01.50.6
total100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap59.01.560.81.437.71.424.50.940.31.742.00.6
small gap17.11.115.51.022.31.222.80.921.41.420.10.5
medium gap10.80.99.40.817.81.121.10.915.71.215.70.4
large gap12.31.011.20.919.01.128.91.021.11.419.70.5
very large gap0.70.33.10.53.20.52.80.41.60.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151121/137501
NFI3
number of forest plots
processes in channels SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
processes in channels SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
n/ano gap60.21.131.52.140.22.723.32.923.32.234.43.547.60.8
small gap15.90.823.51.919.22.125.73.018.32.017.92.818.10.6
medium gap9.70.720.31.813.71.922.32.922.12.221.93.114.10.6
large gap11.90.721.91.823.62.326.73.133.62.524.33.217.90.6
very large gap2.30.32.80.73.21.02.01.02.70.91.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap59.53.431.01.939.12.622.82.112.81.740.62.033.00.9
small gap20.02.824.01.818.62.029.42.324.32.222.51.723.40.8
medium gap9.72.119.11.617.72.023.52.121.82.213.91.417.90.8
large gap10.72.221.91.721.12.123.52.137.02.521.31.623.10.8
very large gap.0.04.00.83.51.00.80.44.11.01.80.52.60.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterno gap56.14.653.86.967.47.134.56.420.54.458.47.147.02.5
small gap16.73.519.25.52.32.323.65.724.14.720.85.918.52.0
medium gap15.83.47.73.74.73.218.25.232.55.114.65.117.21.9
large gap10.52.917.35.320.96.221.95.621.74.56.23.515.91.8
very large gap0.90.91.91.94.73.21.81.81.21.2.0.01.50.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap60.01.032.31.441.21.823.91.718.31.440.31.742.00.6
small gap16.30.823.51.318.01.427.81.821.61.421.41.420.10.5
medium gap10.00.619.21.215.11.322.71.623.01.515.71.215.70.4
large gap11.70.721.71.222.21.524.41.733.91.721.11.419.80.5
very large gap2.00.33.30.53.50.71.20.43.20.61.60.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151122/137502
NFI3
number of forest plots
processes in channels SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
processes in channels SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regionarea of largest gap (aerial photo, 5 classes) %± %± %± %±
Western Jurano gap54.91.962.44.850.65.655.41.7
small gap19.61.515.83.620.24.519.21.3
medium gap11.51.210.93.119.04.412.11.1
large gap13.21.310.93.110.13.412.71.1
very large gap0.90.4.0.0.0.00.70.3
total100.0.100.0.100.0.100.0.
Eastern Jurano gap73.73.041.714.272.713.472.02.9
small gap9.11.925.012.59.18.79.91.9
medium gap5.01.516.710.818.211.66.21.5
large gap11.32.116.710.8.0.011.12.0
very large gap0.90.6.0.0.0.00.80.6
total100.0.100.0.100.0.100.0.
Western Plateauno gap62.53.152.310.4.0.060.73.0
small gap13.02.225.99.150.025.014.72.2
medium gap8.81.813.17.0.0.09.11.8
large gap11.42.18.75.950.025.011.72.0
very large gap4.21.3.0.0.0.03.81.2
total100.0.100.0.100.0.100.0.
Central Plateauno gap57.52.655.07.977.89.858.12.4
small gap16.62.022.56.6.0.016.41.8
medium gap9.01.510.04.75.65.49.01.4
large gap14.11.812.55.211.17.413.81.7
very large gap2.80.9.0.05.65.42.70.8
total100.0.100.0.100.0.100.0.
Eastern Plateauno gap62.12.069.08.6100.0.62.62.0
small gap14.81.524.18.0.0.015.21.5
medium gap10.31.3.0.0.0.09.81.2
large gap9.51.26.94.7.0.09.31.2
very large gap3.30.7.0.0.0.03.10.7
total100.0.100.0.100.0.100.0.
Western Pre-Alpsno gap30.24.730.63.973.311.533.03.0
small gap27.14.521.23.520.110.423.42.7
medium gap16.73.822.63.6.0.019.02.5
large gap21.84.220.53.46.76.520.22.6
very large gap4.22.05.11.9.0.04.41.3
total100.0.100.0.100.0.100.0.
Central Pre-Alpsno gap32.62.832.82.957.113.233.32.0
small gap23.62.525.92.721.411.024.61.8
medium gap20.82.418.92.414.39.419.81.7
large gap19.72.420.12.57.16.919.61.7
very large gap3.21.12.30.9.0.02.70.7
total100.0.100.0.100.0.100.0.
Eastern Pre-Alpsno gap42.63.546.03.588.97.446.22.4
small gap18.82.820.02.8.0.018.61.9
medium gap13.42.416.52.65.65.414.51.7
large gap21.32.915.02.55.65.417.61.9
very large gap4.01.42.51.1.0.03.10.8
total100.0.100.0.100.0.100.0.
Northwestern Alpsno gap30.34.028.83.339.110.230.12.5
small gap20.53.523.43.117.47.921.82.2
medium gap22.03.616.82.88.75.918.32.1
large gap26.53.825.53.230.49.626.32.4
very large gap0.80.85.41.74.34.33.51.0
total100.0.100.0.100.0.100.0.
Central Alpsno gap33.25.628.15.672.713.433.93.9
small gap16.74.421.95.2.0.017.73.2
medium gap17.84.515.74.69.18.716.23.0
large gap29.45.432.85.99.18.729.43.8
very large gap2.82.01.61.69.18.72.71.4
total100.0.100.0.100.0.100.0.
Northeastern Alpsno gap41.36.232.34.635.712.835.83.6
small gap23.75.313.83.47.16.916.72.8
medium gap9.63.721.54.1.0.015.62.7
large gap23.85.425.64.350.013.426.93.3
very large gap1.61.66.82.57.16.95.01.6
total100.0.100.0.100.0.100.0.
Southwestern Alpsno gap23.32.922.82.134.56.423.91.7
small gap25.73.029.42.323.65.727.81.8
medium gap22.32.923.52.118.25.222.71.6
large gap26.73.123.52.121.95.624.41.7
very large gap2.01.00.80.41.81.81.20.4
total100.0.100.0.100.0.100.0.
Southeastern Alpsno gap23.32.212.81.720.54.418.31.4
small gap18.32.024.32.224.14.721.61.4
medium gap22.12.221.82.232.55.123.01.5
large gap33.62.537.02.521.74.533.91.7
very large gap2.70.94.11.01.21.23.20.6
total100.0.100.0.100.0.100.0.
Southern Alpsno gap34.43.540.62.058.47.140.31.7
small gap17.92.822.51.720.85.921.41.4
medium gap21.93.113.91.414.65.115.71.2
large gap24.33.221.31.66.23.521.11.4
very large gap1.50.91.80.5.0.01.60.4
total100.0.100.0.100.0.100.0.
Switzerlandno gap47.70.833.00.947.02.542.00.6
small gap18.00.623.40.818.52.020.10.5
medium gap14.00.617.90.817.21.915.70.4
large gap17.90.623.10.815.81.819.70.5
very large gap2.40.32.60.31.50.62.40.2
total100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151123/137503
NFI3
number of forest plots
protection forest perimeter SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: biogeographical region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
protection forest perimeter SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
outside of perimeterno gap56.31.762.11.433.41.622.23.122.62.434.53.447.40.8
small gap18.11.315.01.021.21.426.73.318.12.217.62.718.10.6
medium gap10.71.19.10.818.61.322.23.122.82.421.43.014.10.6
large gap13.71.210.80.923.81.526.63.333.72.725.13.117.90.6
very large gap1.20.43.00.53.00.62.31.12.90.91.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap58.13.361.73.833.81.423.32.112.81.841.41.935.10.9
small gap17.02.616.82.921.51.229.32.325.62.322.31.622.60.8
medium gap14.32.47.82.117.81.123.62.124.82.314.31.317.70.7
large gap10.62.112.62.623.01.322.82.133.72.520.21.522.10.8
very large gap.0.01.20.83.80.61.00.53.10.91.70.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap56.71.562.11.333.71.123.01.717.41.539.91.642.00.6
small gap17.91.215.20.921.40.928.51.922.11.621.31.420.10.5
medium gap11.41.08.90.818.20.923.11.823.91.615.81.215.70.4
large gap13.11.011.00.823.31.024.01.833.71.821.31.419.80.5
very large gap0.90.32.80.43.40.41.40.53.00.71.70.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151124/137504
NFI3
number of forest plots
protection forest perimeter SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest perimeter SilvaProtect
outside of perimeterinside perimetertotal
cantonarea of largest gap (aerial photo, 5 classes) %± %± %±
AGno gap63.12.977.813.863.62.9
small gap13.32.111.110.513.32.1
medium gap7.81.7.0.07.61.6
large gap12.22.011.110.512.12.0
very large gap3.51.2.0.03.41.1
total100.0.100.0.100.0.
AIno gap60.612.750.011.154.68.5
small gap6.66.420.09.014.25.9
medium gap6.66.415.08.111.35.4
large gap26.211.415.08.119.96.8
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
ARno gap53.18.961.111.556.07.1
small gap24.87.611.17.519.95.7
medium gap9.75.422.29.914.25.0
large gap12.45.85.65.49.94.3
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
BEno gap44.22.236.02.240.21.6
small gap17.91.722.21.920.01.3
medium gap18.31.715.11.716.81.2
large gap17.91.722.61.920.21.3
very large gap1.60.64.10.92.80.5
total100.0.100.0.100.0.
BL/BSno gap70.55.157.110.867.74.6
small gap7.42.914.37.78.92.8
medium gap8.73.119.08.610.83.1
large gap13.43.89.56.412.63.3
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
FRno gap50.34.239.75.246.33.3
small gap14.02.920.54.316.52.4
medium gap12.62.818.24.114.72.3
large gap18.93.318.24.118.62.6
very large gap4.21.73.41.93.91.3
total100.0.100.0.100.0.
GEno gap71.714.4.0.071.714.4
small gap.0.0.0.0.0.0
medium gap.0.0.0.0.0.0
large gap18.912.5.0.018.912.5
very large gap9.49.4.0.09.49.4
total100.0..0.0100.0.
GLno gap45.07.933.96.538.75.1
small gap17.46.011.34.413.93.6
medium gap7.54.215.14.911.83.3
large gap27.67.134.16.531.34.8
very large gap2.52.55.73.24.32.1
total100.0.100.0.100.0.
GRno gap22.22.116.71.519.01.2
small gap18.21.923.81.821.51.3
medium gap22.42.122.91.722.71.3
large gap34.32.433.22.033.61.5
very large gap2.90.83.40.83.20.6
total100.0.100.0.100.0.
JUno gap61.14.354.86.359.03.5
small gap11.92.922.65.315.42.6
medium gap12.73.016.14.713.82.5
large gap13.53.06.53.111.22.3
very large gap0.80.8.0.00.50.5
total100.0.100.0.100.0.
LUno gap44.73.539.17.643.83.2
small gap24.73.119.56.223.82.8
medium gap10.02.131.77.313.72.2
large gap16.62.69.74.615.42.3
very large gap4.01.4.0.03.31.2
total100.0.100.0.100.0.
NEno gap55.84.272.08.958.33.9
small gap22.53.620.08.022.13.3
medium gap11.62.74.03.910.42.4
large gap8.72.44.03.98.02.1
very large gap1.51.0.0.01.20.9
total100.0.100.0.100.0.
NWno gap27.810.638.810.334.07.5
small gap27.810.621.88.724.56.8
medium gap11.17.58.76.09.84.7
large gap27.810.626.29.326.97.0
very large gap5.65.54.44.34.93.4
total100.0.100.0.100.0.
OWno gap21.15.431.46.525.94.2
small gap26.35.927.56.326.94.3
medium gap22.95.619.65.621.33.9
large gap24.55.719.65.622.24.0
very large gap5.22.92.01.93.71.8
total100.0.100.0.100.0.
SGno gap46.94.448.13.747.62.8
small gap18.03.419.32.918.82.2
medium gap14.93.114.42.614.62.0
large gap17.23.315.52.716.22.1
very large gap3.11.52.81.22.91.0
total100.0.100.0.100.0.
SHno gap73.85.466.727.373.45.3
small gap11.54.133.327.412.54.2
medium gap8.23.5.0.07.83.4
large gap6.63.2.0.06.33.0
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
SOno gap70.53.561.111.569.63.4
small gap11.22.411.17.411.22.3
medium gap3.51.422.29.85.31.6
large gap13.02.65.65.412.32.4
very large gap1.81.0.0.01.60.9
total100.0.100.0.100.0.
SZno gap32.95.142.95.637.73.8
small gap17.74.213.03.815.52.8
medium gap16.44.018.24.417.23.0
large gap28.34.922.14.725.33.4
very large gap4.72.33.92.24.31.6
total100.0.100.0.100.0.
TGno gap66.74.568.811.567.04.2
small gap17.13.618.89.817.33.4
medium gap5.42.1.0.04.71.9
large gap9.02.712.58.39.42.6
very large gap1.81.3.0.01.61.1
total100.0.100.0.100.0.
TIno gap40.54.145.92.144.71.9
small gap18.13.222.41.821.51.6
medium gap20.83.412.61.414.31.3
large gap19.93.317.91.618.31.5
very large gap0.70.71.30.51.20.4
total100.0.100.0.100.0.
URno gap31.57.326.86.228.94.7
small gap19.66.221.25.720.54.2
medium gap17.05.917.35.317.23.9
large gap29.47.130.86.430.24.8
very large gap2.52.43.92.73.21.8
total100.0.100.0.100.0.
VDno gap48.72.442.14.547.32.1
small gap24.02.124.03.924.01.8
medium gap11.91.618.23.513.31.4
large gap13.31.614.93.213.61.5
very large gap2.10.70.80.81.80.6
total100.0.100.0.100.0.
VSno gap23.32.924.22.023.91.7
small gap25.73.028.72.127.81.8
medium gap22.32.922.92.022.71.6
large gap26.73.123.32.024.41.7
very large gap2.01.00.90.41.20.4
total100.0.100.0.100.0.
ZGno gap52.711.633.312.344.18.6
small gap26.310.220.010.423.57.3
medium gap10.57.120.010.414.76.1
large gap10.57.113.38.911.85.6
very large gap.0.013.38.95.94.1
total100.0.100.0.100.0.
ZHno gap61.63.075.015.362.03.0
small gap13.22.112.511.713.22.1
medium gap12.42.1.0.012.02.0
large gap9.31.812.511.79.41.8
very large gap3.51.1.0.03.41.1
total100.0.100.0.100.0.
Switzerlandno gap47.60.835.10.942.10.6
small gap18.00.622.60.820.10.5
medium gap14.10.617.70.715.70.4
large gap17.90.622.10.819.70.5
very large gap2.40.32.40.32.40.2
total100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151125/137505
NFI3
number of forest plots
protection forest perimeter SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
protection forest perimeter SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
outside of perimeterno gap59.31.660.81.435.62.026.61.534.43.547.50.8
small gap17.01.315.01.022.61.720.71.417.92.818.10.6
medium gap10.01.09.70.917.51.620.91.421.93.114.10.6
large gap12.91.111.20.920.71.729.71.624.33.217.90.6
very large gap0.90.33.30.53.60.82.20.51.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap57.93.460.84.439.61.923.11.241.81.935.20.9
small gap17.72.620.03.722.11.624.21.222.41.622.60.8
medium gap14.32.46.72.318.01.521.21.114.01.317.70.7
large gap10.12.111.72.917.51.528.41.320.21.522.00.8
very large gap.0.00.80.82.80.63.20.51.60.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap59.01.560.81.437.71.424.50.940.31.742.00.6
small gap17.11.115.51.022.31.222.80.921.41.420.10.5
medium gap10.80.99.40.817.81.121.10.915.71.215.70.4
large gap12.31.011.20.919.01.128.91.021.11.419.70.5
very large gap0.70.33.10.53.20.52.80.41.60.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151126/137506
NFI3
number of forest plots
protection forest perimeter SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
protection forest perimeter SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
outside of perimeterno gap60.11.131.52.140.12.723.32.923.32.234.43.547.50.8
small gap15.90.823.51.919.32.225.73.018.32.017.92.818.10.6
medium gap9.80.720.31.813.81.922.32.922.12.221.93.114.10.6
large gap11.90.721.91.823.62.326.73.133.62.524.33.217.90.6
very large gap2.30.32.80.73.21.02.01.02.70.91.50.92.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap59.02.732.91.942.22.424.22.014.21.641.81.935.10.9
small gap18.52.123.61.716.91.928.72.124.22.022.41.622.60.8
medium gap11.51.818.21.516.31.822.92.023.82.014.01.317.70.7
large gap10.61.721.51.621.02.023.32.034.22.220.21.522.10.8
very large gap0.30.33.80.83.70.90.90.43.60.91.60.52.40.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap60.01.032.31.441.21.823.91.718.31.440.31.742.00.6
small gap16.30.823.51.318.01.427.81.821.61.421.41.420.10.5
medium gap10.00.619.21.215.11.322.71.623.01.515.71.215.70.4
large gap11.70.721.71.222.21.524.41.733.91.721.11.419.80.5
very large gap2.00.33.30.53.50.71.20.43.20.61.60.42.40.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151127/137507
NFI3
number of forest plots
protection forest perimeter SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest perimeter SilvaProtect
outside of perimeterinside perimetertotal
economic regionarea of largest gap (aerial photo, 5 classes) %± %± %±
Western Jurano gap54.91.957.23.755.41.7
small gap19.61.517.82.919.21.3
medium gap11.51.214.42.612.11.1
large gap13.21.310.62.312.71.1
very large gap0.90.4.0.00.70.3
total100.0.100.0.100.0.
Eastern Jurano gap73.43.062.19.072.02.9
small gap8.91.917.27.09.91.9
medium gap5.11.513.86.46.21.5
large gap11.62.26.94.711.12.0
very large gap0.90.7.0.00.80.6
total100.0.100.0.100.0.
Western Plateauno gap62.53.144.59.660.73.0
small gap13.02.229.58.814.72.2
medium gap8.81.811.16.19.11.8
large gap11.42.114.86.911.72.0
very large gap4.21.3.0.03.81.2
total100.0.100.0.100.0.
Central Plateauno gap57.52.662.16.458.12.4
small gap16.62.015.54.816.41.8
medium gap9.01.58.63.79.01.4
large gap14.11.812.14.313.81.7
very large gap2.80.91.71.72.70.8
total100.0.100.0.100.0.
Eastern Plateauno gap62.02.071.47.662.62.0
small gap14.91.520.06.815.21.5
medium gap10.41.3.0.09.81.2
large gap9.41.28.64.79.31.2
very large gap3.30.7.0.03.10.7
total100.0.100.0.100.0.
Western Pre-Alpsno gap30.24.734.83.933.03.0
small gap27.14.521.13.323.42.7
medium gap16.73.820.43.319.02.5
large gap21.84.219.13.220.22.6
very large gap4.22.04.61.74.41.3
total100.0.100.0.100.0.
Central Pre-Alpsno gap32.62.834.02.933.32.0
small gap23.62.525.72.624.61.8
medium gap20.82.418.72.419.81.7
large gap19.72.419.42.419.61.7
very large gap3.21.12.20.92.70.7
total100.0.100.0.100.0.
Eastern Pre-Alpsno gap42.33.549.83.446.22.4
small gap18.92.818.32.618.61.9
medium gap13.42.415.52.514.51.7
large gap21.42.914.12.417.61.9
very large gap4.01.42.31.03.10.8
total100.0.100.0.100.0.
Northwestern Alpsno gap30.34.029.93.230.12.5
small gap20.53.522.72.921.82.2
medium gap22.03.615.92.518.32.1
large gap26.53.826.13.026.32.4
very large gap0.80.85.31.63.51.0
total100.0.100.0.100.0.
Central Alpsno gap33.25.634.65.533.93.9
small gap16.74.418.74.517.73.2
medium gap17.84.514.74.116.23.0
large gap29.45.429.35.329.43.8
very large gap2.82.02.71.92.71.4
total100.0.100.0.100.0.
Northeastern Alpsno gap41.36.232.74.435.83.6
small gap23.75.313.03.116.72.8
medium gap9.63.718.93.615.62.7
large gap23.85.428.54.226.93.3
very large gap1.61.66.92.35.01.6
total100.0.100.0.100.0.
Southwestern Alpsno gap23.32.924.22.023.91.7
small gap25.73.028.72.127.81.8
medium gap22.32.922.92.022.71.6
large gap26.73.123.32.024.41.7
very large gap2.01.00.90.41.20.4
total100.0.100.0.100.0.
Southeastern Alpsno gap23.32.214.21.618.31.4
small gap18.32.024.22.021.61.4
medium gap22.12.223.82.023.01.5
large gap33.62.534.22.233.91.7
very large gap2.70.93.60.93.20.6
total100.0.100.0.100.0.
Southern Alpsno gap34.43.541.81.940.31.7
small gap17.92.822.41.621.41.4
medium gap21.93.114.01.315.71.2
large gap24.33.220.21.521.11.4
very large gap1.50.91.60.51.60.4
total100.0.100.0.100.0.
Switzerlandno gap47.50.835.10.942.00.6
small gap18.10.622.60.820.10.5
medium gap14.10.617.70.715.70.4
large gap17.90.622.10.819.70.5
very large gap2.40.32.40.32.40.2
total100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151128/137508
NFI3
number of forest plots
protection forest perimeter SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: grid NFI4 2009-2013
state 2004/06
protection forest perimeter SilvaProtect
outside of perimeterinside perimetertotal
cantonarea of largest gap (aerial photo, 5 classes) %± %± %±
AGno gap63.64.433.327.362.84.4
small gap11.02.933.327.311.62.9
medium gap9.32.7.0.09.12.6
large gap13.63.233.327.314.03.2
very large gap2.51.5.0.02.51.4
total100.0.100.0.100.0.
AIno gap80.018.450.016.160.013.0
small gap.0.030.014.920.010.6
medium gap.0.0.0.0.0.0
large gap20.018.420.013.020.010.6
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
ARno gap53.313.140.015.848.010.1
small gap33.312.420.012.928.09.1
medium gap6.76.630.014.816.07.5
large gap6.76.610.09.78.05.5
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
BEno gap48.33.136.53.342.82.3
small gap16.12.322.92.819.21.8
medium gap16.92.313.72.315.41.7
large gap18.42.424.62.921.31.9
very large gap0.40.42.31.01.30.5
total100.0.100.0.100.0.
BL/BSno gap64.77.950.015.961.67.2
small gap10.95.210.09.610.74.6
medium gap5.43.830.014.610.74.6
large gap19.06.510.09.617.15.5
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
FRno gap50.76.246.67.549.04.8
small gap9.23.617.85.712.73.2
medium gap13.94.317.85.715.53.5
large gap20.05.013.35.117.33.6
very large gap6.23.04.43.15.52.2
total100.0.100.0.100.0.
GEno gap100.0..0.0100.0.
small gap.0.0.0.0.0.0
medium gap.0.0.0.0.0.0
large gap.0.0.0.0.0.0
very large gap.0.0.0.0.0.0
total100.0..0.0100.0.
GLno gap53.313.042.39.846.37.9
small gap6.76.511.56.39.84.7
medium gap6.76.511.56.39.84.7
large gap33.312.330.89.131.77.3
very large gap.0.03.83.82.42.4
total100.0.100.0.100.0.
GRno gap15.92.916.72.416.41.8
small gap21.13.321.92.621.62.0
medium gap27.43.625.52.826.22.2
large gap34.43.834.33.034.32.4
very large gap1.30.91.60.81.50.6
total100.0.100.0.100.0.
JUno gap66.86.243.39.158.75.2
small gap13.94.626.78.118.34.2
medium gap7.03.416.76.810.43.3
large gap12.34.413.36.212.73.6
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
LUno gap47.84.931.810.045.04.5
small gap26.14.318.28.324.73.9
medium gap10.63.040.910.515.93.3
large gap15.53.69.16.214.43.1
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
NEno gap50.76.092.96.757.65.4
small gap23.85.17.16.921.14.4
medium gap18.24.6.0.015.23.9
large gap5.62.7.0.04.72.3
very large gap1.71.7.0.01.41.4
total100.0.100.0.100.0.
NWno gap40.015.828.617.435.311.8
small gap20.012.942.919.129.411.3
medium gap20.012.9.0.011.88.0
large gap20.012.928.617.423.510.5
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
OWno gap32.19.430.89.131.46.6
small gap12.06.626.98.819.65.6
medium gap24.18.615.47.119.65.6
large gap24.18.626.98.825.56.1
very large gap7.75.2.0.03.82.6
total100.0.100.0.100.0.
SGno gap47.26.947.65.547.54.3
small gap22.75.816.74.119.03.4
medium gap18.85.416.74.117.53.3
large gap9.44.014.33.812.42.8
very large gap1.91.94.82.33.71.6
total100.0.100.0.100.0.
SHno gap73.57.550.035.872.27.4
small gap5.94.150.035.88.34.7
medium gap8.84.9.0.08.34.7
large gap11.85.6.0.011.15.3
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
SOno gap67.55.466.719.367.55.2
small gap7.83.1.0.07.22.9
medium gap6.52.833.319.38.43.1
large gap15.64.2.0.014.53.9
very large gap2.61.8.0.02.41.7
total100.0.100.0.100.0.
SZno gap41.98.947.57.945.15.9
small gap19.47.110.04.814.14.1
medium gap9.75.320.06.415.54.3
large gap25.87.917.56.021.14.9
very large gap3.23.25.03.54.22.4
total100.0.100.0.100.0.
TGno gap68.56.070.014.568.75.6
small gap21.65.320.012.721.34.9
medium gap6.63.2.0.05.72.8
large gap1.71.710.09.52.82.0
very large gap1.71.7.0.01.41.4
total100.0.100.0.100.0.
TIno gap58.87.950.23.351.43.1
small gap15.45.821.02.720.22.5
medium gap12.95.411.42.111.62.0
large gap10.34.916.62.515.72.2
very large gap2.72.60.90.61.10.7
total100.0.100.0.100.0.
URno gap33.612.339.69.337.57.4
small gap26.211.317.87.320.76.2
medium gap14.09.217.87.316.45.7
large gap26.211.324.98.225.36.6
very large gap.0.0.0.0.0.0
total100.0.100.0.100.0.
VDno gap53.23.640.76.750.43.2
small gap22.93.022.25.722.72.7
medium gap8.32.020.45.511.02.0
large gap13.52.514.94.913.82.2
very large gap2.11.01.91.82.00.9
total100.0.100.0.100.0.
VSno gap27.85.726.03.026.42.7
small gap23.05.425.93.025.32.6
medium gap24.75.527.83.127.12.7
large gap22.95.419.82.720.52.4
very large gap1.61.60.50.50.70.5
total100.0.100.0.100.0.
ZGno gap75.022.333.316.246.214.3
small gap25.022.433.316.230.813.2
medium gap.0.0.0.0.0.0
large gap.0.011.110.87.77.7
very large gap.0.022.214.315.410.4
total100.0.100.0.100.0.
ZHno gap59.74.275.021.760.14.1
small gap12.22.8.0.011.92.7
medium gap17.33.2.0.016.83.1
large gap8.62.425.021.79.12.4
very large gap2.21.2.0.02.11.2
total100.0.100.0.100.0.
Switzerlandno gap50.81.236.51.344.40.9
small gap17.10.921.41.119.00.7
medium gap14.00.818.71.116.10.7
large gap16.40.921.51.118.70.7
very large gap1.70.31.80.41.80.2
total100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151158/137538
NFI3
number of forest plots
protection forest perimeter SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: grid NFI4 2009-2013
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
protection forest perimeter SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
outside of perimeterno gap60.32.461.12.040.23.025.22.546.97.050.61.2
small gap15.91.814.51.422.22.620.92.315.75.117.30.9
medium gap9.71.411.01.318.82.421.72.421.65.814.10.9
large gap13.41.611.11.316.92.331.12.711.84.516.30.9
very large gap0.70.42.40.61.90.81.00.64.02.81.60.3
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap54.44.956.86.941.02.825.41.844.72.936.61.3
small gap20.44.023.66.021.52.322.01.720.32.421.51.1
medium gap13.63.45.93.318.22.223.01.714.72.118.71.1
large gap11.73.213.74.816.92.127.21.819.62.421.41.1
very large gap.0.0.0.02.30.92.50.60.70.51.80.4
total100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap59.12.160.71.940.72.125.31.445.02.744.30.9
small gap16.81.615.21.421.81.721.71.419.62.219.20.7
medium gap10.41.310.61.218.51.622.61.415.82.016.20.7
large gap13.11.511.31.316.91.628.51.518.42.118.60.7
very large gap0.60.32.20.62.10.62.00.51.20.61.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151159/137539
NFI3
number of forest plots
protection forest perimeter SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: grid NFI4 2009-2013
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
protection forest perimeter SilvaProtectarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
outside of perimeterno gap60.71.534.63.246.84.327.85.716.53.146.97.050.51.2
small gap15.11.122.42.819.63.523.05.421.43.415.75.117.30.9
medium gap10.41.020.62.712.22.924.75.525.53.621.65.814.20.9
large gap12.11.021.12.719.23.522.95.435.94.011.84.516.30.9
very large gap1.70.41.30.82.31.31.61.60.70.74.02.81.60.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimeterno gap55.24.034.32.744.83.526.03.015.02.644.72.936.51.3
small gap21.43.322.32.415.62.525.93.023.23.020.32.421.51.1
medium gap11.02.518.32.216.12.627.83.124.73.114.72.118.71.1
large gap12.32.722.32.419.22.819.82.735.03.419.62.421.61.1
very large gap.0.02.70.94.41.40.50.52.11.00.70.51.80.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap60.01.434.52.145.62.726.42.715.62.045.02.744.20.9
small gap15.91.122.31.817.22.125.32.622.42.319.62.219.20.7
medium gap10.50.919.31.714.51.927.12.725.12.415.82.016.20.7
large gap12.11.021.81.819.22.220.52.435.42.618.42.118.70.7
very large gap1.40.32.10.63.51.00.70.51.50.71.20.61.70.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151160/137540
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