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NFI4
number of forest plots
slope (20% classes) · traces of rockfall
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
slope (20% classes)traces of rockfall %± %± %± %± %± %± %±
to 20%present0.10.10.10.10.0.0.0.0.0.0.10.10.10.0
not present47.71.110.91.09.11.13.00.75.70.83.30.621.30.5
total47.81.111.01.09.11.13.00.75.70.83.40.621.40.5
21-40 %present4.80.912.11.918.52.815.72.813.62.322.42.912.10.8
not present47.22.273.64.568.35.476.46.076.95.363.55.163.01.7
total52.02.585.74.986.86.292.16.590.55.885.95.775.11.9
over 100%present0.10.12.60.53.60.73.10.72.90.67.10.92.50.2
not present0.10.10.70.30.40.31.80.50.90.33.60.71.00.1
total0.20.13.30.64.10.84.90.93.80.710.71.13.50.2
totalpresent5.00.514.81.122.11.618.81.616.51.329.71.614.70.4
not present95.00.585.21.177.91.681.21.683.51.370.31.685.30.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 25.09.2020 #903324/367709
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