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NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern 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%....0.3100....0.41000.771
21-40%0.4100..0.31000.771..0.41001.845
41-60%..0.41000.31002.4381.4501.1585.625
61-80%0.7712.5381.4503.4310.7712.14110.918
over 80%2.5383.6315.5251.7441.1587.42121.813
total3.6326.5237.9208.2203.23311.41740.89
outside perimeter0-20%5.7253.2331.1581.0581.7451.45014.216
21-40%7.5229.7197.1227.92014.7157.12254.18
41-60%26.81132.51019.51329.21047.0720.213175.14
61-80%95.5570.0631.2934.0948.9738.29317.73
over 80%290.8281.9562.8628.81025.21167.66557.02
total426.41197.32121.73100.93137.52134.431118.11
total0-20%5.7253.2331.4501.0581.7451.84514.915
21-40%7.9219.7197.5228.61914.7157.42155.88
41-60%26.81132.81019.91331.6948.4721.312180.74
61-80%96.2572.5632.6937.4849.6740.38328.63
over 80%293.3285.5568.3530.5926.31175.05578.82
total430.01203.82129.72109.13140.62145.721158.91

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164878/151260
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