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NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectdegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/a0-20%5.1201.2410.4710.8501.0451.2419.714
21-40%7.0174.9206.8176.0188.6156.11839.57
41-60%22.3921.4911.31311.61322.5910.61399.64
61-80%65.0531.2818.71012.01330.5811.013168.33
over 80%267.2239.3628.6710.11317.91015.911378.82
total366.5197.9465.8540.4680.4444.96696.01
inside perimeter0-20%0.0.0.8500.21000.0.0.21000.0.1.241
21-40%0.21001.0450.8501.2411.2410.6585.020
41-60%0.21003.4240.8505.9185.8182.92619.010
61-80%1.0456.0184.1228.1157.4164.32131.08
over 80%3.3249.1149.1149.1144.9206.11841.67
total4.72020.4915.01124.3819.6913.81197.84
outside perimeter0-20%0.21001.7351.0440.4710.4711.4385.120
21-40%0.0.4.5212.0313.1265.5193.72318.810
41-60%0.8508.6156.21710.61319.0109.41454.76
61-80%7.11726.7812.41220.9921.9925.78114.84
over 80%43.7647.1634.9620.7915.11170.84232.32
total51.8688.5456.5555.8461.95111.03425.62
total0-20%5.3193.7231.6351.2411.6352.62816.011
21-40%7.21610.4149.61410.31415.31110.41363.35
41-60%23.3933.3718.31028.2847.3622.99173.33
61-80%73.0563.9535.2741.0659.9541.06314.12
over 80%314.2195.5372.6339.8637.8692.83652.71
total423.01206.81137.32120.52162.02169.721219.31
© WSL, Swiss National Forest Inventory, 18.06.2020 #863476/329807
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