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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
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%2.6282.8271.6352.6281.24110.814
21-40%3.2254.1226.61722.795.11941.77
41-60%11.51311.31220.3943.378.61595.04
61-80%31.3735.1732.5750.868.615158.33
over 80%113.73153.9250.3639.5714.011371.52
total162.22207.21111.33159.0337.57677.21
inside perimeter0-20%0.0.0.0.0.0.0.21000.21000.471
21-40%0.21000.0.0.0.1.4380.4712.032
41-60%0.0.0.0.0.0.3.6231.2414.820
61-80%1.0440.0.1.0456.9171.43810.414
over 80%2.5280.21000.65810.2147.81621.39
total3.7230.21001.63522.3911.01338.97
outside perimeter0-20%0.0.0.21001.3403.3250.8505.619
21-40%0.0.0.0.4.52114.2123.52322.29
41-60%1.0450.210010.01446.8610.71368.75
61-80%4.6212.82730.6870.7528.28136.83
over 80%28.6817.31063.0577.4466.54252.82
total34.2720.59109.43212.32109.73486.11
total0-20%2.6283.0262.9266.1182.23016.711
21-40%3.4244.12211.11338.379.01465.95
41-60%12.51211.51230.3793.7420.59168.53
61-80%36.9737.9764.15128.4338.26305.52
over 80%144.82171.52113.93127.1388.33645.61
total200.11227.91222.31393.71158.321202.21
© WSL, Swiss National Forest Inventory, 18.06.2020 #861555/327886
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