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NFI4b
number of forest plots
rockfall SilvaProtect · area of largest gap (aerial photo, 5 classes)
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: grid NFI4 2009-2013
state 2009/13
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regionarea of largest gap (aerial photo, 5 classes) %± %± %± %±
Western Jurano gap38.62.724.915.338.65.338.32.4
small gap36.22.625.415.539.75.436.72.3
medium gap12.21.824.915.39.63.211.91.6
large gap12.51.824.915.312.03.612.61.6
very large gap0.60.4.0.0.0.00.50.3
total100.0.100.0.100.0.100.0.
Eastern Jurano gap49.04.8.0.053.813.949.14.5
small gap34.34.6.0.030.812.833.64.3
medium gap5.62.2100.0.15.410.07.42.4
large gap10.22.9.0.0.0.09.02.6
very large gap0.90.9.0.0.0.00.80.8
total100.0.100.0.100.0.100.0.
Western Plateauno gap34.84.6.0.025.312.733.84.4
small gap34.94.6.0.066.313.738.14.5
medium gap12.33.2.0.0.0.011.12.9
large gap15.23.5.0.08.48.114.53.3
very large gap2.81.6.0.0.0.02.61.5
total100.0..0.0100.0.100.0.
Central Plateauno gap32.33.3.0.033.310.332.23.2
small gap39.23.5100.0.52.410.940.73.3
medium gap17.02.7.0.04.84.715.82.5
large gap9.02.0.0.09.56.49.01.9
very large gap2.51.1.0.0.0.02.31.0
total100.0.100.0.100.0.100.0.
Eastern Plateauno gap35.52.8.0.041.211.935.82.7
small gap40.22.9.0.041.211.940.32.8
medium gap11.81.9.0.011.87.811.81.8
large gap11.51.9.0.05.95.711.21.8
very large gap1.00.6.0.0.0.01.00.6
total100.0..0.0100.0.100.0.
Western Pre-Alpsno gap28.46.4.0.019.74.723.03.8
small gap22.56.0.0.026.85.324.93.9
medium gap26.66.3100.0.32.55.630.74.2
large gap22.56.0.0.021.04.821.53.7
very large gap.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.
Central Pre-Alpsno gap19.03.325.021.719.03.519.12.4
small gap33.84.025.021.740.54.436.82.9
medium gap21.13.425.021.716.73.319.12.4
large gap26.13.725.021.723.03.824.62.6
very large gap.0.0.0.00.80.80.40.4
total100.0.100.0.100.0.100.0.
Eastern Pre-Alpsno gap34.85.033.327.336.04.635.43.3
small gap31.54.833.327.332.44.532.03.3
medium gap13.03.533.327.314.43.314.12.4
large gap19.64.1.0.016.23.517.52.7
very large gap1.11.1.0.00.90.91.00.7
total100.0.100.0.100.0.100.0.
Northwestern Alpsno gap22.65.369.212.818.64.023.93.3
small gap35.46.17.77.433.04.832.03.6
medium gap21.05.27.77.417.53.918.02.9
large gap21.05.215.410.027.84.624.43.3
very large gap.0.0.0.03.11.81.71.0
total100.0.100.0.100.0.100.0.
Central Alpsno gap18.46.336.414.634.78.927.05.1
small gap20.86.627.313.517.27.020.44.6
medium gap10.65.0.0.030.98.616.74.2
large gap50.18.127.313.517.27.034.75.4
very large gap.0.09.18.7.0.01.31.3
total100.0.100.0.100.0.100.0.
Northeastern Alpsno gap18.57.533.315.822.75.822.54.4
small gap18.57.544.416.634.06.530.34.9
medium gap33.39.111.110.59.44.016.84.0
large gap29.68.811.110.530.26.328.14.8
very large gap.0.0.0.03.82.62.21.6
total100.0.100.0.100.0.100.0.
Southwestern Alpsno gap12.53.512.56.716.62.615.12.0
small gap25.84.624.98.831.23.229.22.6
medium gap25.84.624.98.821.02.822.62.3
large gap34.85.137.79.929.33.231.52.6
very large gap1.11.1.0.02.01.01.60.7
total100.0.100.0.100.0.100.0.
Southeastern Alpsno gap13.12.533.315.711.62.212.81.7
small gap25.83.222.213.925.63.025.62.2
medium gap23.23.122.213.925.13.024.22.1
large gap36.83.622.213.934.83.335.42.4
very large gap1.10.8.0.02.91.22.00.7
total100.0.100.0.100.0.100.0.
Southern Alpsno gap29.84.931.28.229.32.729.62.3
small gap20.84.428.17.936.52.832.62.3
medium gap18.54.215.66.413.72.014.81.8
large gap30.95.025.17.719.82.322.52.1
very large gap.0.0.0.00.70.50.50.3
total100.0.100.0.100.0.100.0.
Switzerlandno gap30.41.131.14.323.81.227.80.8
small gap33.31.125.84.133.51.333.10.8
medium gap15.90.918.23.617.91.016.80.6
large gap19.40.924.14.023.41.221.20.7
very large gap1.00.20.80.81.40.31.20.2
total100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #151218/137598
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