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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 NFI1/NFI2/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....2.538....0.41002.835
31-40 years ago....1.1580.31000.41000.7712.538
41-50 years ago....0.41001.0580.41000.7712.538
over 50 years ago1.158..3.2333.8300.41006.12414.415
total3.2330.77113.5168.2202.14110.31838.19
outside perimeterless than 10 years ago98.04192.72112.2515.81422.31112.516453.32
11-20 years ago44.3836.8971.7612.71619.4128.920193.94
21-30 years ago16.61412.01734.5106.82214.8157.82192.56
31-40 years ago11.9174.62823.8123.4319.2195.32558.38
41-50 years ago6.5232.83520.6135.5255.3258.52049.28
over 50 years ago8.6204.22938.4932.2923.61169.06176.14
total185.92253.21301.1276.4494.63112.131023.21
totalless than 10 years ago99.44193.42116.4517.81323.01113.915463.92
11-20 years ago45.0836.8973.8613.71519.81210.018199.24
21-30 years ago16.61412.01737.096.82214.8158.22095.46
31-40 years ago11.9174.62824.9123.8309.5196.12460.77
41-50 years ago6.5232.83520.9136.5225.7249.21951.68
over 50 years ago9.7194.22941.6935.9824.01175.15190.54
total189.11253.91314.6284.6496.73122.431061.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163548/149928
search result: 1 entry on 1 page

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