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NFI4b

forest area: rockfall 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
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 ago1.4500.7714.3292.1410.7711.45010.618
11-20 years ago0.771..2.1411.0580.41001.1585.326
21-30 years ago....2.835....0.7713.532
31-40 years ago....1.4500.31000.41000.7712.835
41-50 years ago....0.41001.0580.41000.7712.538
over 50 years ago1.158..3.2333.8301.1587.12216.215
total3.2330.77114.2168.2202.83511.81741.09
outside perimeterless than 10 years ago99.44194.82118.9519.21225.81113.915472.12
11-20 years ago46.1836.8976.0613.01521.61210.018203.54
21-30 years ago17.71412.71639.698.22018.21313.516110.05
31-40 years ago11.9175.02726.3115.82412.71611.31772.97
41-50 years ago6.9232.83522.8127.5216.3239.21955.68
over 50 years ago8.6204.22947.1835.6828.51080.45204.44
total190.61256.41330.7189.43113.13138.231118.41
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 #164902/151284
search result: 1 entry on 1 page

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