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NFI3

forest area: avalanches 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
avalanches 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 ago1.3388.5144.8195.3185.1180.75025.78
11-20 years ago1.4355.4182.2283.2233.9211.23817.410
21-30 years ago1.1412.5271.4352.6262.6262.12912.312
31-40 years ago0.21001.8322.8252.2282.1291.63310.713
41-50 years ago0.21001.4351.0412.4270.5581.6337.216
over 50 years ago0.5582.2292.1297.7145.3187.11624.88
total4.72021.9914.41023.4819.4914.31198.04
outside perimeterless than 10 years ago281.9282.9450.8517.9935.4617.110486.01
11-20 years ago68.8531.9721.6810.41225.0810.513168.33
21-30 years ago43.1621.0914.01110.11318.4914.211120.74
31-40 years ago13.51115.0117.1158.5149.11410.01363.25
41-50 years ago7.2168.5144.8199.6135.61710.31346.06
over 50 years ago12.11224.6817.01031.4729.9775.14190.03
total426.61183.82115.3287.93123.32137.221074.21
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 #158590/144969
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