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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 NFI1/NFI2/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..11.3174.1282.8351.45021.213
11-20 years ago1.158..6.7234.4273.9301.15817.214
21-30 years ago0.771..5.7252.7351.8441.15812.017
31-40 years ago1.158..3.2331.4500.7710.41006.723
41-50 years ago....4.3291.4501.4501.1588.121
over 50 years ago0.4100..5.7258.9192.5378.22025.611
total4.727..36.9922.91113.11613.21690.86
outside perimeterless than 10 years ago98.04193.42105.1513.71520.11212.516442.82
11-20 years ago44.0836.8967.179.31915.9148.920181.94
21-30 years ago15.91512.01731.3104.12813.0167.12283.46
31-40 years ago10.8184.62821.7122.4378.8195.72554.08
41-50 years ago6.5232.83516.7145.2254.2288.12043.59
over 50 years ago9.4194.22935.9927.01021.51266.96164.94
total184.52253.91277.7261.6583.64109.24970.61
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 #163358/149738
search result: 1 entry on 1 page

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