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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 | main tree species | %/yr | ± | %/yr | ± | %/yr | ± | %/yr | ± | %/yr | ± | %/yr | ± | %/yr | ± |
n/a | spruce | 36.4 | 1.3 | 48.7 | 3.3 | 58.9 | 4.0 | 40.4 | 9.7 | 64.6 | 5.4 | 22.7 | 5.8 | 41.0 | 1.1 |
fir | 20.5 | 1.0 | 28.9 | 3.1 | 19.6 | 2.8 | 2.0 | 3.0 | 4.2 | 1.9 | 4.3 | 2.3 | 20.0 | 0.9 | |
pine | 0.8 | 0.3 | 1.2 | 0.6 | 0.8 | 0.8 | 2.0 | 2.9 | 4.7 | 2.7 | 1.7 | 1.8 | 1.1 | 0.3 | |
larch | 1.2 | 0.2 | 0.7 | 0.5 | 0.5 | 0.2 | 28.9 | 7.1 | 14.0 | 3.8 | 19.6 | 4.7 | 2.6 | 0.3 | |
stone pine | 0.0 | . | 0.3 | 0.2 | 0.3 | 0.2 | 3.1 | 3.1 | 6.6 | 1.6 | 0.2 | 0.1 | 0.4 | 0.1 | |
other conifers | 1.2 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 0.1 | 0.2 | 0.0 | . | 0.8 | 0.2 | |
beech | 23.2 | 1.1 | 12.4 | 2.1 | 14.9 | 2.9 | 1.2 | 1.3 | 0.9 | 1.9 | 7.2 | 3.0 | 19.3 | 0.8 | |
maple | 3.7 | 0.5 | 3.8 | 1.0 | 2.5 | 1.2 | 1.7 | 1.1 | -0.0 | 0.9 | 8.7 | 4.1 | 3.5 | 0.4 | |
ash | 5.8 | 0.6 | 2.4 | 1.0 | 1.5 | 1.9 | 0.2 | 4.2 | 0.7 | 0.4 | 8.8 | 2.7 | 4.7 | 0.5 | |
oak | 2.9 | 0.4 | 0.5 | 0.3 | 0.1 | 0.5 | 2.8 | 1.2 | -0.3 | 0.5 | 1.6 | 1.1 | 2.2 | 0.3 | |
chestnut | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | . | 1.1 | 1.1 | 0.0 | . | -1.4 | 7.3 | 0.0 | 0.2 | |
other broadleaves | 4.3 | 0.5 | 0.9 | 0.6 | 0.9 | 0.9 | 16.6 | 4.7 | 4.4 | 2.0 | 26.6 | 7.4 | 4.3 | 0.4 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
inside perimeter | spruce | 23.3 | 10.3 | 56.1 | 8.7 | 45.5 | 9.5 | 44.5 | 7.3 | 78.6 | 7.2 | 68.5 | 12.0 | 54.3 | 4.0 |
fir | 20.2 | 9.4 | 22.2 | 6.4 | 24.6 | 6.3 | 11.5 | 4.7 | 6.7 | 4.7 | -1.9 | 10.6 | 15.1 | 2.7 | |
pine | 1.4 | 2.1 | 0.6 | 0.3 | 0.4 | 0.3 | 2.9 | 3.9 | -3.7 | 2.8 | 2.3 | 2.2 | 0.5 | 1.0 | |
larch | 0.0 | . | 0.8 | 0.7 | -1.8 | 1.6 | 27.5 | 5.6 | 10.9 | 4.2 | 25.4 | 9.0 | 10.1 | 1.7 | |
stone pine | 0.0 | . | 0.0 | . | 0.0 | . | 0.7 | 1.3 | 0.8 | 2.1 | 0.0 | . | 0.3 | 0.5 | |
other conifers | 0.0 | . | 0.2 | 0.1 | 0.0 | . | 0.0 | . | -0.1 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | |
beech | 53.7 | 11.8 | 13.2 | 5.9 | 24.3 | 6.0 | 8.6 | 5.0 | 3.6 | 2.8 | 2.2 | 4.0 | 14.8 | 2.6 | |
maple | 0.8 | 4.3 | 6.2 | 2.3 | 4.6 | 2.3 | 2.3 | 1.4 | -0.0 | 0.0 | 0.1 | 0.1 | 2.9 | 0.9 | |
ash | 0.5 | 0.5 | 1.3 | 1.3 | 5.0 | 2.4 | 0.9 | 0.6 | 0.3 | 0.3 | 3.1 | 3.0 | 1.8 | 0.6 | |
oak | 0.0 | . | -0.0 | 0.0 | 0.0 | . | 0.1 | 0.1 | 0.0 | . | -0.0 | 0.2 | 0.0 | 0.0 | |
chestnut | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
other broadleaves | 0.1 | 1.4 | -0.5 | 0.9 | -2.5 | 1.9 | 1.0 | 1.1 | 2.9 | 1.8 | 0.2 | 4.4 | 0.2 | 0.7 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
outside perimeter | spruce | 20.0 | 2.9 | 47.8 | 3.0 | 48.7 | 4.5 | 40.5 | 6.3 | 73.7 | 3.9 | 32.5 | 5.3 | 43.5 | 1.8 |
fir | 27.0 | 2.8 | 28.5 | 2.7 | 19.1 | 3.1 | 5.5 | 3.2 | 7.0 | 2.4 | 4.7 | 2.1 | 18.3 | 1.2 | |
pine | -0.3 | 0.9 | -0.1 | 0.1 | -0.5 | 0.8 | 4.3 | 3.9 | -0.0 | 0.7 | 0.5 | 0.5 | 0.2 | 0.4 | |
larch | 0.1 | 0.1 | 0.3 | 0.1 | 1.2 | 1.0 | 31.2 | 4.9 | 10.3 | 2.8 | 10.8 | 2.9 | 5.9 | 0.8 | |
stone pine | 0.0 | . | -0.1 | 0.2 | 0.0 | . | 2.9 | 1.4 | 1.3 | 0.8 | 0.0 | 0.0 | 0.4 | 0.2 | |
other conifers | 1.0 | 0.8 | 0.2 | 0.1 | 0.1 | 0.3 | 0.0 | 0.0 | -0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 | |
beech | 40.2 | 3.3 | 16.1 | 2.3 | 19.3 | 3.1 | 6.5 | 2.1 | 3.1 | 1.0 | 16.9 | 4.4 | 18.5 | 1.3 | |
maple | 3.7 | 1.5 | 2.8 | 0.7 | 5.8 | 1.9 | 2.0 | 1.1 | 1.8 | 0.9 | 1.5 | 0.9 | 3.1 | 0.5 | |
ash | 6.6 | 1.6 | 3.6 | 0.9 | 5.2 | 1.7 | 4.3 | 2.2 | 0.6 | 0.9 | 5.9 | 2.1 | 4.4 | 0.6 | |
oak | -0.3 | 0.5 | 0.4 | 0.2 | -0.4 | 0.4 | 0.1 | 0.4 | 0.4 | 0.4 | 3.4 | 1.3 | 0.6 | 0.2 | |
chestnut | 0.0 | . | 0.0 | . | 0.0 | . | -0.2 | 0.7 | -0.0 | 0.0 | 12.7 | 4.2 | 1.9 | 0.7 | |
other broadleaves | 2.0 | 1.0 | 0.6 | 0.7 | 1.5 | 1.3 | 3.0 | 2.7 | 1.9 | 1.1 | 10.9 | 2.8 | 3.0 | 0.6 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
total | spruce | 34.5 | 1.2 | 48.9 | 2.2 | 53.1 | 2.8 | 41.5 | 4.3 | 70.9 | 3.0 | 33.8 | 4.1 | 42.6 | 0.9 |
fir | 21.2 | 1.0 | 28.2 | 1.9 | 19.8 | 2.0 | 6.3 | 2.2 | 5.9 | 1.5 | 4.0 | 1.8 | 19.2 | 0.7 | |
pine | 0.7 | 0.3 | 0.5 | 0.3 | 0.2 | 0.5 | 3.4 | 2.3 | 1.3 | 1.2 | 0.9 | 0.6 | 0.8 | 0.2 | |
larch | 1.1 | 0.2 | 0.5 | 0.2 | 0.6 | 0.5 | 29.7 | 3.3 | 11.8 | 2.1 | 14.0 | 2.4 | 4.0 | 0.3 | |
stone pine | 0.0 | . | 0.1 | 0.1 | 0.1 | 0.1 | 2.4 | 1.1 | 3.3 | 0.8 | 0.1 | 0.0 | 0.4 | 0.1 | |
other conifers | 1.1 | 0.3 | 0.1 | 0.1 | 0.1 | 0.1 | 0.0 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | 0.6 | 0.1 | |
beech | 25.3 | 1.0 | 14.2 | 1.5 | 17.7 | 2.0 | 5.9 | 1.8 | 2.4 | 0.9 | 13.5 | 3.2 | 18.8 | 0.7 | |
maple | 3.7 | 0.4 | 3.6 | 0.6 | 4.2 | 1.0 | 2.0 | 0.7 | 0.9 | 0.6 | 2.9 | 1.1 | 3.3 | 0.3 | |
ash | 5.8 | 0.5 | 2.9 | 0.6 | 3.5 | 1.2 | 2.4 | 1.5 | 0.6 | 0.5 | 6.3 | 1.6 | 4.4 | 0.4 | |
oak | 2.5 | 0.4 | 0.4 | 0.2 | -0.1 | 0.3 | 0.7 | 0.3 | 0.1 | 0.3 | 2.7 | 1.0 | 1.5 | 0.2 | |
chestnut | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | . | 0.1 | 0.4 | -0.0 | 0.0 | 8.6 | 3.3 | 0.6 | 0.2 | |
other broadleaves | 4.0 | 0.5 | 0.7 | 0.4 | 0.9 | 0.7 | 5.6 | 1.7 | 3.0 | 1.0 | 13.2 | 2.6 | 3.6 | 0.3 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . |
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