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NFI4
forest area
rockfall SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%2.3292.8271.2411.8330.6588.815
21-40%3.0264.1225.81916.7114.12233.68
41-60%11.31310.71319.31038.377.41687.05
61-80%30.3734.6730.3848.867.316151.23
over 80%112.63153.1248.5637.0712.612363.72
total159.42205.21105.13142.5332.07644.31
inside perimeter0-20%0.0.0.0.0.0.0.21000.21000.471
21-40%0.21000.0.0.0.1.0450.4711.635
41-60%0.0.0.0.0.0.3.4241.0454.421
61-80%1.0440.0.1.0456.5171.43810.014
over 80%2.5280.21000.6589.8147.81620.910
total3.7230.21001.63520.9910.81337.37
outside perimeter0-20%0.0.0.21001.3403.1260.8505.419
21-40%0.0.0.0.4.52113.6123.32421.410
41-60%1.0450.21009.41445.7610.31366.65
61-80%4.6212.82730.4868.7527.08133.54
over 80%28.4817.21062.8576.2465.74250.22
total34.0720.39108.33207.32107.13477.11
total0-20%2.3293.0262.5285.1201.63514.512
21-40%3.2254.12210.31431.387.81556.66
41-60%12.31210.91328.7887.5418.710158.03
61-80%35.9737.3761.75124.0335.77294.62
over 80%143.42170.52111.93123.0386.13634.91
total197.11225.71215.11370.81150.021158.71
© WSL, Swiss National Forest Inventory, 18.06.2020 #861554/327885
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