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NFI4
forest area
protection forest perimeter SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
protection forest perimeter SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
outside of perimetern/a0.4710.0.0.0.0.0.0.0.0.0.0.471
less than 10 years ago245.8238.1720.597.31615.4114.421331.42
11-20 years ago64.9519.91012.4124.02212.1122.827116.04
21-30 years ago24.098.9156.8172.2308.8152.72753.46
31-40 years ago12.9126.5174.4213.6237.1164.12238.77
41-50 years ago7.3166.2182.8263.0264.0222.62825.99
over 50 years ago9.31413.21210.51314.21116.21115.31178.75
total364.5192.7457.4534.3763.5532.07644.51
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago30.0846.6627.1818.21017.21013.312152.53
11-20 years ago11.01322.3916.31010.61316.7107.11784.05
21-30 years ago5.21913.1127.6167.61612.8129.21455.46
31-40 years ago3.8236.9175.4195.9189.1148.91540.17
41-50 years ago2.0326.0184.2217.0165.41910.81335.37
over 50 years ago6.21813.8129.51430.2718.01068.74146.53
total58.25108.7370.1479.5379.34117.92513.91
totaln/a0.4710.0.0.0.0.0.0.0.0.0.0.471
less than 10 years ago275.8284.7447.6525.5832.6717.710484.02
11-20 years ago75.9542.2628.7814.51128.889.914200.03
21-30 years ago29.2822.0914.4119.71421.5911.913108.84
31-40 years ago16.81113.4129.8149.61416.21113.11278.85
41-50 years ago9.21412.1127.01610.1149.41413.41261.26
over 50 years ago15.51127.0820.1944.5634.2784.04225.33
total422.81201.41127.52113.82142.82150.021158.41
© WSL, Swiss National Forest Inventory, 19.06.2020 #849444/315775
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