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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 | 38.5 | 1.1 | 26.2 | 1.9 | 30.7 | 2.4 | 18.6 | 2.6 | 17.1 | 1.8 | 30.4 | 2.9 | 31.6 | 0.8 |
small gap | 37.5 | 1.1 | 30.7 | 2.0 | 31.6 | 2.4 | 26.7 | 2.9 | 29.2 | 2.2 | 25.3 | 2.8 | 33.4 | 0.8 | |
medium gap | 11.5 | 0.7 | 19.7 | 1.8 | 15.2 | 1.9 | 21.3 | 2.7 | 20.8 | 1.9 | 21.0 | 2.6 | 15.4 | 0.6 | |
large gap | 11.3 | 0.7 | 22.6 | 1.8 | 21.0 | 2.1 | 32.9 | 3.1 | 31.4 | 2.2 | 22.6 | 2.6 | 18.4 | 0.6 | |
very large gap | 1.3 | 0.3 | 0.8 | 0.4 | 1.4 | 0.6 | 0.5 | 0.5 | 1.6 | 0.6 | 0.8 | 0.5 | 1.2 | 0.2 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
inside perimeter | no gap | 52.2 | 10.4 | 30.4 | 4.6 | 25.2 | 4.9 | 8.6 | 2.5 | 13.9 | 3.4 | 12.6 | 3.9 | 19.4 | 1.8 |
small gap | 26.1 | 9.2 | 27.9 | 4.4 | 33.9 | 5.3 | 38.3 | 4.4 | 16.0 | 3.7 | 36.7 | 5.7 | 30.1 | 2.0 | |
medium gap | 17.4 | 7.9 | 23.1 | 4.1 | 18.0 | 4.4 | 23.2 | 3.8 | 28.4 | 4.5 | 21.1 | 4.9 | 22.8 | 1.9 | |
large gap | 4.3 | 4.2 | 13.7 | 3.4 | 21.7 | 4.7 | 27.4 | 4.0 | 38.6 | 4.9 | 29.6 | 5.4 | 25.2 | 1.9 | |
very large gap | 0.0 | . | 4.9 | 2.1 | 1.2 | 1.2 | 2.4 | 1.4 | 3.1 | 1.8 | 0.0 | . | 2.4 | 0.7 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
outside perimeter | no gap | 38.0 | 3.0 | 22.9 | 2.0 | 28.7 | 2.7 | 17.9 | 2.3 | 15.6 | 2.0 | 35.2 | 2.0 | 27.0 | 0.9 |
small gap | 40.9 | 3.0 | 36.5 | 2.3 | 34.8 | 2.8 | 32.1 | 2.7 | 28.0 | 2.5 | 33.5 | 2.0 | 34.2 | 1.0 | |
medium gap | 11.6 | 2.0 | 18.6 | 1.8 | 15.3 | 2.1 | 18.4 | 2.3 | 20.0 | 2.2 | 13.4 | 1.4 | 16.1 | 0.8 | |
large gap | 9.1 | 1.8 | 21.4 | 1.9 | 19.8 | 2.3 | 29.5 | 2.7 | 33.6 | 2.6 | 17.2 | 1.6 | 21.5 | 0.9 | |
very large gap | 0.4 | 0.4 | 0.7 | 0.4 | 1.4 | 0.7 | 2.1 | 0.9 | 2.9 | 0.9 | 0.7 | 0.3 | 1.3 | 0.2 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
total | no gap | 38.6 | 1.0 | 25.3 | 1.3 | 29.3 | 1.7 | 16.4 | 1.5 | 16.2 | 1.2 | 32.1 | 1.5 | 29.1 | 0.6 |
small gap | 37.8 | 1.0 | 32.9 | 1.4 | 33.1 | 1.7 | 31.3 | 1.8 | 27.2 | 1.5 | 31.4 | 1.6 | 33.4 | 0.6 | |
medium gap | 11.6 | 0.7 | 19.5 | 1.2 | 15.5 | 1.3 | 20.4 | 1.6 | 21.4 | 1.4 | 16.1 | 1.2 | 16.2 | 0.5 | |
large gap | 10.9 | 0.7 | 21.2 | 1.2 | 20.6 | 1.5 | 30.3 | 1.8 | 33.0 | 1.6 | 19.7 | 1.3 | 20.0 | 0.5 | |
very large gap | 1.2 | 0.2 | 1.1 | 0.3 | 1.4 | 0.4 | 1.6 | 0.5 | 2.3 | 0.5 | 0.7 | 0.3 | 1.3 | 0.1 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . |
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