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NFI2

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-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%....0.41000.3100....0.771
21-40%....0.41001.058....1.450
41-60%0.4100..2.8351.7440.7712.5388.121
61-80%0.4100..3.9303.1331.1581.84510.218
over 80%2.5380.7716.0242.1410.41006.12417.714
total3.2330.77113.5168.2202.14110.31838.19
outside perimeter0-20%2.2411.4507.2223.5312.5370.77117.414
21-40%7.2222.14119.9138.22016.2146.42360.17
41-60%15.1159.51958.0719.51230.01022.712154.94
61-80%55.1754.5798.6527.71029.71032.010297.63
over 80%106.24185.63117.5517.41316.31450.27493.32
total185.92253.21301.1276.4494.63112.131023.21
total0-20%2.2411.4507.5223.8302.5370.77118.114
21-40%7.2222.14120.2139.31916.2146.42361.57
41-60%15.5159.51960.8721.21230.7925.211163.04
61-80%55.5754.57102.5530.8930.7933.89307.83
over 80%108.84186.33123.5419.51216.61456.27511.02
total189.11253.91314.6284.6496.73122.431061.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156507/142886
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