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NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-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 ago1.450..11.7174.1282.8351.45021.513
11-20 years ago1.158..6.7234.4273.9301.15817.214
21-30 years ago0.771..6.7233.1331.8441.45013.716
31-40 years ago1.158..3.5311.4501.1581.1588.121
41-50 years ago....4.3291.4501.4501.1588.121
over 50 years ago0.4100..6.0248.9193.9308.62027.711
total4.727..39.0923.31114.81514.61596.46
outside perimeterless than 10 years ago99.44195.62111.5517.11323.71113.915461.22
11-20 years ago45.8836.8971.469.61818.01310.018191.54
21-30 years ago16.91412.71635.7105.12516.51412.81699.86
31-40 years ago10.8185.02724.2124.82612.01610.91767.67
41-50 years ago6.9232.83518.9137.2215.3258.82049.98
over 50 years ago9.4194.22944.2930.5925.61178.95192.94
total189.22257.11305.9274.34101.13135.431062.91
totalless than 10 years ago100.94195.62123.2421.21226.51015.315482.72
11-20 years ago46.8836.8978.1614.01521.91211.117208.84
21-30 years ago17.71412.71642.498.22018.21314.215113.55
31-40 years ago11.9175.02727.7116.22313.01612.01775.87
41-50 years ago6.9232.83523.2128.6196.7229.91858.18
over 50 years ago9.7194.22950.3839.4829.51087.55220.63
total193.81257.11344.9197.63115.92150.021159.41

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164712/151094
search result: 1 entry on 1 page

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