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protection forest region | |||||||||||||||
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Jura + Plateau | Northwestern Alps | Northeastern Alps | Southwestern Alps | Southeastern Alps | Southern Alps | Switzerland | |||||||||
avalanches SilvaProtect | area of largest gap (aerial photo, 5 classes) | % | ± | % | ± | % | ± | % | ± | % | ± | % | ± | % | ± |
n/a | no gap | 37.1 | 1.5 | 24.4 | 2.6 | 31.8 | 3.6 | 17.2 | 3.8 | 15.0 | 2.5 | 30.0 | 4.5 | 31.1 | 1.1 |
small gap | 37.6 | 1.5 | 31.8 | 2.9 | 24.5 | 3.3 | 25.0 | 4.3 | 23.7 | 3.0 | 21.2 | 4.0 | 32.7 | 1.1 | |
medium gap | 12.4 | 1.0 | 21.0 | 2.5 | 14.7 | 2.7 | 22.9 | 4.2 | 22.3 | 2.9 | 18.6 | 3.9 | 15.7 | 0.8 | |
large gap | 11.6 | 1.0 | 22.8 | 2.6 | 28.4 | 3.5 | 34.0 | 4.7 | 36.9 | 3.4 | 29.1 | 4.5 | 19.4 | 0.9 | |
very large gap | 1.3 | 0.4 | . | 0.0 | 0.6 | 0.6 | 1.0 | 1.0 | 2.0 | 1.0 | 1.0 | 1.0 | 1.1 | 0.2 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
inside perimeter | no gap | 53.8 | 13.8 | 30.5 | 6.0 | 25.5 | 6.6 | 9.6 | 3.4 | 9.6 | 4.1 | 12.9 | 5.4 | 19.1 | 2.4 |
small gap | 30.8 | 12.8 | 23.7 | 5.5 | 32.6 | 7.2 | 32.8 | 5.5 | 17.3 | 5.2 | 35.8 | 7.7 | 28.3 | 2.7 | |
medium gap | 7.7 | 7.4 | 23.7 | 5.5 | 16.2 | 5.6 | 24.6 | 5.0 | 26.9 | 6.2 | 23.0 | 6.7 | 22.6 | 2.5 | |
large gap | 7.7 | 7.4 | 17.0 | 4.9 | 23.3 | 6.5 | 31.6 | 5.4 | 42.3 | 6.9 | 28.2 | 7.2 | 27.6 | 2.7 | |
very large gap | . | 0.0 | 5.1 | 2.9 | 2.3 | 2.3 | 1.4 | 1.4 | 3.8 | 2.7 | . | 0.0 | 2.5 | 0.9 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
outside perimeter | no gap | 36.4 | 4.1 | 18.9 | 2.5 | 33.5 | 3.5 | 19.4 | 3.1 | 14.7 | 2.7 | 31.7 | 2.7 | 25.7 | 1.3 |
small gap | 42.9 | 4.2 | 35.4 | 3.0 | 30.6 | 3.5 | 29.3 | 3.6 | 27.5 | 3.4 | 36.2 | 2.8 | 33.9 | 1.4 | |
medium gap | 10.0 | 2.5 | 19.7 | 2.5 | 15.0 | 2.7 | 19.4 | 3.1 | 23.4 | 3.2 | 12.3 | 1.9 | 16.5 | 1.1 | |
large gap | 10.7 | 2.6 | 25.6 | 2.7 | 19.2 | 3.0 | 29.4 | 3.6 | 32.2 | 3.6 | 19.1 | 2.3 | 22.7 | 1.2 | |
very large gap | . | 0.0 | 0.4 | 0.4 | 1.7 | 1.0 | 2.5 | 1.3 | 2.3 | 1.2 | 0.7 | 0.5 | 1.2 | 0.3 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
total | no gap | 37.2 | 1.4 | 22.6 | 1.7 | 31.9 | 2.4 | 16.6 | 2.0 | 14.2 | 1.7 | 29.6 | 2.2 | 28.2 | 0.8 |
small gap | 38.2 | 1.4 | 32.6 | 1.9 | 28.2 | 2.3 | 28.8 | 2.5 | 24.4 | 2.1 | 32.6 | 2.3 | 32.7 | 0.8 | |
medium gap | 12.0 | 0.9 | 20.7 | 1.7 | 15.0 | 1.8 | 21.6 | 2.3 | 23.3 | 2.1 | 14.8 | 1.7 | 16.6 | 0.6 | |
large gap | 11.5 | 0.9 | 23.4 | 1.8 | 23.6 | 2.2 | 31.2 | 2.5 | 35.6 | 2.3 | 22.3 | 2.0 | 21.2 | 0.7 | |
very large gap | 1.2 | 0.3 | 0.7 | 0.3 | 1.3 | 0.6 | 1.8 | 0.7 | 2.4 | 0.7 | 0.7 | 0.4 | 1.2 | 0.2 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . |
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