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NFI2

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
grid: terrestrial grid NFI2
state 1993/95
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%..0.2100..0.2100..0.21000.558
21-40%....0.3710.558..0.21001.041
41-60%0.21000.9451.4351.2380.9451.9306.416
61-80%0.9451.3382.2282.5261.7312.62611.312
over 80%3.0242.3283.1232.4270.7504.81916.310
total4.1214.7197.0156.8153.3239.71335.67
outside perimeter0-20%2.7263.4232.9242.9242.6261.43515.910
21-40%9.31411.9127.81512.21122.8810.91274.95
41-60%27.8839.7620.3924.5840.7624.78177.73
61-80%107.6472.6437.2634.1644.4540.26336.22
over 80%278.5267.3451.8522.9820.9948.85490.31
total425.91195.02120.0296.53131.52126.121094.91
total0-20%2.7263.6222.9243.1232.6261.63316.510
21-40%9.31411.9128.11412.71122.8811.11275.95
41-60%28.0840.6621.6825.6741.6626.68184.13
61-80%108.5473.9439.4636.6646.1542.86347.52
over 80%281.6269.6454.9425.3721.6853.65506.61
total430.01199.71127.02103.32134.82135.821130.51

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 04.11.2014 #157294/143673
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