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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 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/a0.10.10.0.0.0.0.0.0.0.0.0.0.00.0
less than 10 years ago58.41.118.41.215.11.46.01.09.61.02.80.627.30.5
11-20 years ago15.40.89.70.99.31.13.60.87.50.92.00.59.70.4
21-30 years ago5.70.54.60.75.60.91.80.55.70.82.40.54.60.3
31-40 years ago3.10.43.20.64.40.84.50.85.10.84.60.73.90.2
41-50 years ago1.80.33.50.62.30.63.30.74.20.73.10.62.80.2
over 50 years ago2.30.37.90.811.31.214.21.417.61.311.61.18.80.4
total86.70.747.41.647.91.933.51.849.71.726.41.457.10.6
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.40.13.50.62.90.64.30.82.00.50.80.31.90.2
11-20 years ago0.10.12.20.52.00.53.50.72.40.50.40.21.40.1
21-30 years ago0.20.11.50.41.30.41.90.52.00.50.70.31.00.1
31-40 years ago0.20.10.70.30.80.31.80.51.60.40.70.30.80.1
41-50 years ago0.0.0.60.21.40.51.60.51.20.40.80.30.70.1
over 50 years ago0.10.11.40.42.50.67.01.02.90.64.80.72.30.2
total1.10.29.80.910.91.220.21.612.11.18.10.98.00.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago6.50.519.11.216.81.410.81.38.91.07.20.910.60.4
11-20 years ago2.40.38.50.910.11.15.20.97.90.93.90.75.50.3
21-30 years ago1.00.24.80.74.60.84.40.86.00.84.80.73.60.2
31-40 years ago0.70.22.70.53.20.73.30.74.40.75.50.82.70.2
41-50 years ago0.40.12.30.51.60.54.40.82.30.56.00.82.30.2
over 50 years ago1.20.25.40.74.90.818.31.68.71.038.01.610.10.4
total12.20.742.81.541.21.946.32.038.21.765.41.634.90.6
totaln/a0.10.10.0.0.0.0.0.0.0.0.0.0.00.0
less than 10 years ago65.21.041.01.534.81.821.21.720.51.410.81.139.80.6
11-20 years ago17.90.820.51.321.31.612.41.317.81.36.30.816.60.5
21-30 years ago6.90.510.91.011.41.28.11.113.71.27.90.99.20.4
31-40 years ago4.00.46.60.88.41.19.61.211.11.110.71.17.40.3
41-50 years ago2.20.36.30.85.40.99.31.27.70.99.91.05.80.3
over 50 years ago3.70.414.71.118.71.539.42.029.21.654.41.721.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862986/329317
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