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NFI3

forest area: rockfall SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterless than 10 years ago1.4351.4352.6260.9450.5581.2388.115
11-20 years ago0.7501.3381.4350.9451.0410.4715.618
21-30 years ago0.4710.9450.9450.7500.21000.9453.921
31-40 years ago0.558..1.0410.5580.7500.7503.522
41-50 years ago0.4710.21000.3711.5330.21000.7503.323
over 50 years ago0.4711.3380.5582.0291.2387.21512.612
total3.8225.1196.7166.5163.82111.11237.07
outside perimeterless than 10 years ago281.7289.9453.1522.4839.9616.610503.61
11-20 years ago69.5536.1722.4812.81127.8711.412180.23
21-30 years ago43.8622.6914.51112.01120.8915.510129.24
31-40 years ago13.11216.8108.81410.21210.51310.81270.35
41-50 years ago7.0169.8135.51710.4125.91711.21249.96
over 50 years ago12.21225.5818.5937.0633.9675.04202.23
total427.51200.61122.92104.82138.92140.521135.21
totalless than 10 years ago283.2291.4455.7523.2840.5617.89511.71
11-20 years ago70.3537.4623.8813.71128.9711.812185.83
21-30 years ago44.1623.5815.41012.61121.0916.410133.03
31-40 years ago13.71116.8109.91310.71211.21211.51273.85
41-50 years ago7.4169.9135.91711.9116.11711.91253.26
over 50 years ago12.61226.7819.1939.1635.2682.23214.82
total431.21205.71129.72111.32142.82151.621172.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158908/145287
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