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NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %±
n/an/a0.10.10.10.10.0.0.0.0.0.0.00.0
less than 10 years ago47.31.667.81.422.21.39.40.72.90.628.30.5
11-20 years ago17.11.214.11.011.61.06.20.52.00.510.00.4
21-30 years ago6.90.84.70.64.40.65.60.51.80.54.90.3
31-40 years ago4.30.62.00.43.30.54.00.43.40.63.50.2
41-50 years ago2.80.50.90.32.80.52.90.42.00.52.40.2
over 50 years ago3.20.61.60.45.70.712.30.711.51.17.40.3
total81.71.291.20.850.11.540.41.123.71.556.50.6
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.80.30.0.1.60.44.20.40.80.31.90.2
11-20 years ago0.30.20.0.1.80.43.10.40.40.21.40.2
21-30 years ago0.40.20.0.0.70.22.30.30.70.31.00.1
31-40 years ago0.50.20.0.0.40.21.50.30.70.30.70.1
41-50 years ago0.0.0.0.0.80.31.40.30.90.30.70.1
over 50 years ago0.30.20.0.0.60.24.50.54.90.82.30.2
total2.40.50.0.5.80.716.80.88.51.08.10.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago7.60.85.40.721.41.211.00.77.70.910.90.4
11-20 years ago3.30.61.60.49.80.97.40.64.20.75.60.3
21-30 years ago1.20.30.90.34.10.65.80.55.20.83.70.2
31-40 years ago0.90.30.40.23.00.53.60.44.90.82.60.2
41-50 years ago0.70.30.20.11.60.43.20.46.00.82.30.2
over 50 years ago2.30.50.30.24.30.611.80.739.81.710.30.4
total16.01.18.80.844.11.542.81.167.81.635.40.6
totaln/a0.10.10.10.10.0.0.0.0.0.0.00.0
less than 10 years ago55.71.673.11.345.21.524.61.011.41.141.00.6
11-20 years ago20.71.315.81.123.11.316.60.86.60.917.00.5
21-30 years ago8.50.95.50.79.20.913.70.87.80.99.70.4
31-40 years ago5.70.72.40.56.60.79.20.69.01.06.80.3
41-50 years ago3.40.61.00.35.20.77.50.69.01.05.40.3
over 50 years ago5.80.72.00.410.60.928.51.056.21.820.00.5
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #863016/329347
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