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NFI4
forest area
rockfall SilvaProtect · stand stability
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
rockfall SilvaProtectstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/acritical8.7156.0184.0223.6235.4192.23029.98
less stable139.5345.8627.1812.81223.4914.111262.72
stable216.4240.9626.3817.81034.7715.811351.92
total364.5192.7457.4534.3763.5532.07644.51
inside perimetercritical0.0.0.0.0.6580.7500.4711.2413.026
less stable2.1302.5294.2223.3241.8336.81720.710
stable1.8332.0322.6282.9261.5352.82713.612
total3.9224.5217.3167.0163.82310.81337.37
outside perimetercritical0.8506.5184.5216.8165.8187.11631.58
less stable22.3953.4533.0734.6631.4761.85236.42
stable31.2844.3625.4831.1738.4638.26208.63
total54.36104.2362.8472.5375.64107.13476.61
totalcritical9.51412.5129.11411.21311.61310.51364.45
less stable163.93101.7364.2450.8556.6582.74519.92
stable249.4287.2454.3551.8574.6456.85574.11
total422.81201.41127.52113.82142.82150.021158.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #860821/327152
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