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NFI4b

forest area: rockfall 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
rockfall 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%....0.4100....0.41000.771
21-40%0.4100..0.41000.771....1.450
41-60%....0.7712.4370.41000.7714.229
61-80%0.7710.41002.8353.4310.7712.14110.218
over 80%2.2410.41009.2191.7441.1587.12221.613
total3.2330.77113.5168.2202.14110.31838.19
outside perimeter0-20%2.9352.8354.3290.7710.41000.77111.717
21-40%2.2414.62813.9164.82610.2182.14137.910
41-60%15.11512.41749.4822.61131.4912.916143.85
61-80%46.8852.3797.4527.71036.8832.410293.43
over 80%118.94181.13136.2420.51215.81464.06536.42
total185.92253.21301.1276.4494.63112.131023.21
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 #163518/149898
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