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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: forest
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%5.5192.2301.0451.2411.6353.22514.712
21-40%7.4167.1179.4149.21512.6128.31554.16
41-60%23.3924.8914.41116.21125.8813.911118.54
61-80%66.9534.4721.5914.71132.3714.911184.83
over 80%270.5242.6631.0711.01319.21018.310392.62
total373.71111.1377.3452.5591.6458.75764.71
inside perimeter0-20%0.0.0.8500.21000.0.0.21000.0.1.241
21-40%0.21001.0450.8501.2411.4380.6585.220
41-60%0.21003.6230.8506.1186.4172.92620.010
61-80%1.0456.0184.5218.5147.9154.52132.48
over 80%3.5249.8149.9149.2144.9206.11843.37
total4.92021.2916.21025.1820.8914.011102.24
outside perimeter0-20%0.21001.9331.0440.8500.8501.6356.318
21-40%0.0.4.5212.0313.7236.1184.12220.410
41-60%0.8509.4146.81711.31320.0911.31359.66
61-80%7.11727.1813.11221.7923.5828.38120.74
over 80%44.3648.6638.8620.7916.41074.24242.92
total52.3691.4461.6458.2466.84119.42449.92
total0-20%5.7194.9202.2302.0322.6284.82022.29
21-40%7.61612.61212.21214.21220.21013.01279.75
41-60%24.3937.8722.0933.6752.2528.28198.13
61-80%75.0567.5539.1645.0563.6547.66337.92
over 80%318.21100.9379.6341.0640.6698.53678.91
total430.91223.71155.12135.82179.22192.111316.80
© WSL, Swiss National Forest Inventory, 18.06.2020 #863483/329814
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