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NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · biogeographical region
unit: %
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 assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
inside perimeter0-20%....2.52.5....3.03.01.71.2
21-40%11.310.6..2.52.58.65.8..3.03.04.41.9
41-60%....5.03.429.19.337.517.112.25.713.73.2
61-80%22.213.950.035.425.06.841.610.125.015.318.26.726.64.1
over 80%66.615.750.035.465.07.520.88.337.517.163.68.453.74.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%1.50.51.10.41.30.41.10.71.20.61.20.61.30.2
21-40%1.50.51.80.55.40.78.41.712.51.85.11.14.80.4
41-60%8.31.25.00.817.61.231.82.933.62.616.01.915.70.6
61-80%25.01.920.71.532.51.533.32.936.52.728.02.328.40.8
over 80%63.72.171.51.743.31.625.32.716.22.149.62.549.80.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.50.51.10.41.30.41.10.61.20.61.40.61.30.2
21-40%1.70.61.80.55.30.78.51.712.21.85.01.14.80.4
41-60%8.21.25.00.817.01.231.62.833.72.615.71.815.60.6
61-80%24.91.920.81.532.21.534.02.836.22.727.22.228.40.8
over 80%63.72.171.41.744.21.624.92.616.72.150.72.450.00.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164999/151381
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