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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 NFI1/NFI2/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....1.450
41-60%..0.41000.31002.4380.41000.7714.229
61-80%0.7712.2411.0583.4310.7712.14110.218
over 80%2.5383.6315.5251.7441.1587.12221.513
total3.6326.1247.6218.2202.14110.31837.99
outside perimeter0-20%5.7253.2331.1580.7710.41000.77111.817
21-40%6.8237.9215.4265.22510.5182.14137.910
41-60%25.81130.31014.31523.31138.6811.417143.75
61-80%94.1664.5627.61030.5944.6831.810293.33
over 80%286.1278.3660.7625.71022.81262.96536.52
total418.51184.32109.1385.44116.93109.041023.21
total0-20%5.7253.2331.4500.7710.41001.15812.517
21-40%7.2227.9215.7255.92410.5182.14139.39
41-60%25.81130.71014.71525.71039.0812.117147.95
61-80%94.8666.7628.71034.0945.4734.09303.43
over 80%288.6281.9566.2527.41023.81170.05558.02
total422.11190.42116.7393.73119.03119.331061.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163524/149904
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