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NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-20%......0.31000.41000.771
21-40%0.4100....1.1580.41001.845
41-60%......4.5281.1585.625
61-80%0.771..1.8456.2232.14110.918
over 80%2.2410.41001.15810.7187.42121.813
total3.3330.41002.93522.81211.41740.79
outside perimeter0-20%2.9352.8352.2414.9271.45014.216
21-40%2.9354.6278.32131.0107.12253.88
41-60%13.91613.01631.71095.8520.213174.54
61-80%46.0849.6868.56115.0538.29317.23
over 80%131.83158.93102.4597.3567.66557.92
total197.51228.81213.02343.92134.431117.61
total0-20%2.9352.8352.2415.2261.84514.915
21-40%3.3334.6278.32132.0107.42155.68
41-60%13.91613.01631.710100.2521.312180.14
61-80%46.7849.6870.36121.2540.38328.03
over 80%134.03159.23103.54108.0575.05579.72
total200.81229.11215.92366.71145.721158.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164876/151258
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