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NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
n/an/a0.10.10.0.0.0.0.0.0.0.0.0.0.10.0
less than 10 years ago67.81.144.02.538.03.118.93.627.72.819.03.954.70.9
11-20 years ago17.70.922.22.122.82.614.43.219.92.513.03.418.70.7
21-30 years ago6.40.68.91.410.82.06.32.212.12.14.82.17.60.5
31-40 years ago3.40.47.21.37.21.68.32.59.21.88.92.85.20.4
41-50 years ago2.00.36.31.25.21.47.32.45.41.48.22.83.60.3
over 50 years ago2.50.411.31.616.02.344.74.525.72.746.15.010.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago35.010.036.44.828.55.422.03.817.84.29.63.724.42.0
11-20 years ago12.66.823.54.319.24.618.63.622.84.55.02.818.41.8
21-30 years ago17.68.014.03.512.43.99.12.615.54.08.33.612.21.5
31-40 years ago22.38.87.12.65.32.66.92.411.83.56.53.18.41.3
41-50 years ago0.0.5.92.314.14.17.72.511.33.410.23.98.91.3
over 50 years ago12.66.813.13.420.54.935.74.420.84.460.46.327.72.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago53.23.145.62.442.13.124.12.622.12.511.91.532.01.0
11-20 years ago19.12.419.51.924.92.712.32.022.52.56.21.116.50.8
21-30 years ago8.51.711.21.511.01.99.01.816.92.36.71.210.20.7
31-40 years ago5.51.46.21.28.31.75.61.410.31.86.01.16.80.6
41-50 years ago3.41.15.61.13.81.28.61.76.21.59.01.36.40.6
over 50 years ago10.31.911.91.69.91.840.43.022.12.560.32.328.11.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.10.10.0.0.0.0.0.0.0.0.0.0.00.0
less than 10 years ago65.61.043.91.638.72.022.31.923.81.712.81.343.90.6
11-20 years ago17.80.821.11.423.31.814.31.621.41.77.21.117.90.5
21-30 years ago6.80.610.51.011.11.38.41.214.71.46.51.09.00.4
31-40 years ago3.90.46.80.87.41.16.61.110.01.26.51.06.00.3
41-50 years ago2.20.36.00.85.71.08.11.26.61.09.01.25.10.3
over 50 years ago3.60.411.71.113.81.440.42.223.41.758.02.018.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #863043/329374
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