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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: forest
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/a0.4710.21000.0.0.0.0.0.0.0.0.658
less than 10 years ago248.7240.5721.998.51517.1105.020341.82
11-20 years ago66.5521.5914.6114.62112.7123.823123.64
21-30 years ago24.6911.31310.0143.82312.0135.31967.05
31-40 years ago13.1127.5166.4186.3188.5158.51550.36
41-50 years ago7.5167.2164.0225.2197.0176.01836.97
over 50 years ago11.11322.9920.41024.1934.2730.18142.84
total371.91111.1377.3452.5591.6458.75763.01
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago30.0847.0628.1818.41018.41013.912155.93
11-20 years ago11.41323.2916.91010.61316.9107.41686.45
21-30 years ago5.21913.5128.4157.81513.8129.61458.26
31-40 years ago3.8237.1175.8186.31710.51310.91344.57
41-50 years ago2.0326.2184.4217.5165.61812.11237.87
over 50 years ago6.61715.61114.21132.8722.3979.54171.13
total59.05112.6377.8483.3387.63133.52553.81
totaln/a0.4710.21000.0.0.0.0.0.0.0.0.658
less than 10 years ago278.7287.6450.0526.9835.6718.910497.71
11-20 years ago77.9544.7631.5715.11129.6711.213210.03
21-30 years ago29.8824.8918.41011.51325.8814.911125.24
31-40 years ago17.01114.61112.21212.61219.01019.41094.84
41-50 years ago9.51413.3128.41512.71212.71218.11074.65
over 50 years ago17.71038.5734.6757.0556.65109.63313.92
total430.91223.71155.12135.82179.22192.111316.80
© WSL, Swiss National Forest Inventory, 19.06.2020 #849451/315782
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