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NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · 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 assigneddegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-20%....1.450......1.450
21-40%0.4100..2.1411.7451.4500.41006.024
41-60%....4.6287.5215.3252.53820.013
61-80%1.845..10.3186.8223.9305.72528.511
over 80%2.538..18.4146.8222.5374.62734.910
total4.727..36.9922.91113.11613.21690.86
outside perimeter0-20%2.9352.8353.2330.7710.41001.15811.018
21-40%2.2414.62812.1173.8308.8191.84533.310
41-60%15.11512.41745.5817.51326.51011.118128.05
61-80%45.8852.7789.9624.31133.6928.810275.13
over 80%118.54181.43127.0415.41414.41566.56523.22
total184.52253.91277.7261.6583.64109.24970.61
total0-20%2.9352.8354.6280.7710.41001.15812.417
21-40%2.5384.62814.3165.52510.2182.14139.39
41-60%15.11512.41750.1825.01031.8913.616148.05
61-80%47.6852.77100.2531.1937.5834.59303.63
over 80%121.04181.43145.4422.21116.91471.15558.12
total189.11253.91314.6284.6496.73122.431061.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163328/149708
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