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NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible 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)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a0.21000.21000.0.0.0.0.0.0.471
less than 10 years ago94.73154.6249.6637.375.020341.12
11-20 years ago34.2732.2726.0827.483.823123.64
21-30 years ago13.81210.61310.41425.894.92065.55
31-40 years ago8.6154.6217.41620.3108.41549.36
41-50 years ago5.5192.0316.31816.2115.41935.47
over 50 years ago6.4173.72314.31269.8522.09116.34
total163.42207.91113.93196.9349.46731.61
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago1.6350.0.3.52416.4111.33822.99
11-20 years ago0.6580.0.4.02212.0130.65817.211
21-30 years ago0.8500.0.1.5359.1151.24112.612
31-40 years ago1.0440.0.0.8506.5171.2419.614
41-50 years ago0.0.0.0.1.7335.3191.4388.515
over 50 years ago0.6580.0.1.43818.2108.21528.48
total4.7200.0.12.91267.5513.81199.04
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago15.11112.21247.8643.9612.412131.44
11-20 years ago6.7173.72321.7929.186.81768.15
21-30 years ago2.3292.0319.01523.298.41545.07
31-40 years ago1.8331.0456.61714.6119.51433.58
41-50 years ago1.4380.4713.52312.71210.31428.38
over 50 years ago4.7200.8509.71447.4665.94128.43
total32.0720.1998.53170.73113.43434.72
totaln/a0.21000.21000.0.0.0.0.0.0.471
less than 10 years ago111.43166.92100.9497.5418.710495.41
11-20 years ago41.5635.9751.7668.5511.213208.83
21-30 years ago16.91012.61221.0958.0614.511123.04
31-40 years ago11.5135.61914.81141.5719.01092.45
41-50 years ago6.9172.42911.51334.2717.11072.25
over 50 years ago11.7134.52125.59135.4396.13273.12
total200.11228.11225.31435.11176.621265.31
© WSL, Swiss National Forest Inventory, 18.06.2020 #863150/329481
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