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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
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 ago67.21.140.22.235.22.720.72.923.52.312.22.450.10.8
11-20 years ago17.90.921.41.920.52.310.32.117.42.08.52.017.60.7
21-30 years ago6.60.610.21.412.61.97.91.915.62.07.81.98.70.5
31-40 years ago3.50.47.01.27.71.511.62.310.21.614.22.56.20.4
41-50 years ago2.00.36.21.15.51.310.02.16.01.38.62.14.20.3
over 50 years ago2.70.415.01.618.62.239.53.527.32.448.63.613.20.6
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 ago35.010.035.04.727.65.121.83.717.63.99.93.623.61.9
11-20 years ago12.66.823.64.219.04.417.83.419.94.04.52.517.51.7
21-30 years ago17.68.015.43.611.53.69.62.616.73.88.73.412.81.5
31-40 years ago22.38.86.82.56.22.78.32.512.53.48.63.49.21.3
41-50 years ago0.0.5.62.213.03.88.32.59.93.010.43.78.71.3
over 50 years ago12.66.813.63.422.74.834.24.323.44.357.95.928.12.0
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 ago52.43.144.42.441.02.922.82.523.32.411.41.430.61.0
11-20 years ago20.02.519.81.924.32.511.11.920.82.36.21.016.00.8
21-30 years ago8.31.711.31.510.61.89.61.716.12.17.71.210.40.7
31-40 years ago5.41.46.21.17.81.67.31.510.71.77.21.17.40.6
41-50 years ago3.41.15.41.13.91.19.61.75.91.38.91.26.50.5
over 50 years ago10.51.913.01.612.41.939.72.923.12.458.62.129.20.9
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 ago65.01.041.51.536.81.921.91.722.71.511.41.141.00.6
11-20 years ago18.10.820.91.321.91.612.21.319.11.46.60.917.00.5
21-30 years ago6.90.511.21.011.61.29.01.216.01.37.80.99.70.4
31-40 years ago4.00.46.60.87.61.08.91.210.71.19.01.06.80.3
41-50 years ago2.20.35.80.75.60.99.51.26.50.99.01.05.40.3
over 50 years ago3.80.414.01.116.41.438.52.025.11.656.21.820.10.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #863048/329379
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