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région de forêt protectrice | |||||||||||||||
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Plateau/Jura | Nord des Alpes ouest | Nord des Alpes est | Sud-ouest des Alpes | Sud-est des Alpes | Sud des Alpes | Suisse | |||||||||
forêt de protection contre des chutes de pierres ou de blocs (2022) | nombre de tiges/ha (DHP ≥12 cm; vifs sur pied; par classes) | % | ± | % | ± | % | ± | % | ± | % | ± | % | ± | % | ± |
pas d'indication | pas d'indication | . | . | . | . | . | . | . | . | . | . | . | . | . | . |
0-100 tiges/ha | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
101-200 tiges/ha | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
201-300 tiges/ha | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
301-400 tiges/ha | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
401-500 tiges/ha | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
501-600 tiges/ha | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
>600 tiges/ha | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
total | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
à l'intérieur | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 0.0 | . | 10.7 | 7.2 | 15.9 | 7.4 | 4.7 | 4.5 | 7.5 | 7.2 | 15.2 | 5.7 | 10.9 | 2.8 | |
101-200 tiges/ha | 12.3 | 11.4 | 4.7 | 4.6 | 8.7 | 5.9 | 4.7 | 4.6 | 38.9 | 13.6 | 10.8 | 5.1 | 11.4 | 2.9 | |
201-300 tiges/ha | 10.9 | 10.3 | 4.1 | 4.0 | 11.8 | 6.5 | 23.1 | 9.0 | 7.9 | 7.6 | 8.1 | 4.5 | 10.9 | 2.8 | |
301-400 tiges/ha | 32.6 | 15.6 | 19.2 | 8.6 | 16.0 | 7.4 | 9.2 | 6.2 | 14.2 | 9.4 | 16.5 | 6.2 | 16.5 | 3.3 | |
401-500 tiges/ha | 10.9 | 10.3 | 8.9 | 6.0 | 17.2 | 7.8 | 22.9 | 9.0 | 8.0 | 7.6 | 8.6 | 4.7 | 12.8 | 3.0 | |
501-600 tiges/ha | 0.0 | . | 20.1 | 9.0 | 17.3 | 7.8 | 8.6 | 5.9 | 0.0 | . | 4.8 | 3.3 | 9.5 | 2.6 | |
>600 tiges/ha | 33.4 | 15.7 | 32.2 | 10.1 | 13.1 | 7.0 | 26.8 | 9.4 | 23.5 | 11.8 | 36.0 | 7.9 | 28.1 | 4.0 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
à l'extérieur | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 11.4 | 0.9 | 9.3 | 1.3 | 12.7 | 1.8 | 14.8 | 2.0 | 14.2 | 1.7 | 10.6 | 1.5 | 11.7 | 0.6 | |
101-200 tiges/ha | 18.1 | 1.1 | 15.0 | 1.5 | 15.1 | 1.9 | 14.1 | 2.0 | 13.7 | 1.7 | 15.4 | 1.8 | 16.0 | 0.6 | |
201-300 tiges/ha | 17.6 | 1.1 | 16.4 | 1.6 | 18.0 | 2.1 | 16.3 | 2.1 | 20.2 | 2.0 | 10.7 | 1.6 | 16.8 | 0.7 | |
301-400 tiges/ha | 16.9 | 1.1 | 15.7 | 1.5 | 13.7 | 1.8 | 12.8 | 1.9 | 12.7 | 1.7 | 16.6 | 1.9 | 15.4 | 0.6 | |
401-500 tiges/ha | 11.9 | 0.9 | 11.9 | 1.4 | 11.8 | 1.7 | 14.8 | 2.0 | 10.0 | 1.5 | 12.1 | 1.7 | 11.9 | 0.6 | |
501-600 tiges/ha | 9.0 | 0.8 | 10.4 | 1.3 | 7.6 | 1.4 | 7.2 | 1.5 | 8.4 | 1.4 | 9.3 | 1.5 | 8.9 | 0.5 | |
>600 tiges/ha | 15.1 | 1.0 | 21.3 | 1.7 | 21.1 | 2.2 | 20.0 | 2.3 | 20.9 | 2.0 | 25.4 | 2.2 | 19.3 | 0.7 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
total | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 11.3 | 0.9 | 9.3 | 1.2 | 12.9 | 1.7 | 14.1 | 1.9 | 14.0 | 1.7 | 11.0 | 1.5 | 11.7 | 0.5 | |
101-200 tiges/ha | 18.1 | 1.1 | 14.7 | 1.5 | 14.7 | 1.8 | 13.4 | 1.9 | 14.5 | 1.7 | 15.0 | 1.7 | 15.8 | 0.6 | |
201-300 tiges/ha | 17.6 | 1.1 | 16.0 | 1.5 | 17.7 | 2.0 | 16.8 | 2.1 | 19.8 | 1.9 | 10.4 | 1.5 | 16.6 | 0.6 | |
301-400 tiges/ha | 17.0 | 1.1 | 15.8 | 1.5 | 13.9 | 1.8 | 12.5 | 1.8 | 12.8 | 1.6 | 16.5 | 1.8 | 15.4 | 0.6 | |
401-500 tiges/ha | 11.9 | 0.9 | 11.8 | 1.3 | 12.1 | 1.6 | 15.4 | 2.0 | 9.9 | 1.5 | 11.8 | 1.6 | 12.0 | 0.6 | |
501-600 tiges/ha | 8.9 | 0.8 | 10.7 | 1.3 | 8.2 | 1.4 | 7.3 | 1.4 | 8.1 | 1.3 | 8.9 | 1.4 | 8.9 | 0.5 | |
>600 tiges/ha | 15.2 | 1.0 | 21.7 | 1.7 | 20.6 | 2.1 | 20.5 | 2.2 | 21.0 | 2.0 | 26.4 | 2.1 | 19.7 | 0.7 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . |
Table citation
Abegg, M.; Ahles, P.; Allgaier Leuch, B.; Cioldi, F.; Didion, M.; Düggelin, C.; Fischer, C.; Herold, A.; Meile, R.; Rohner, B.; Rösler, E.; Speich, S.; Temperli, C.; Traub, B.,
2023: Swiss national forest inventory - Result table No. 1311631. Birmensdorf, Swiss Federal Research Institute WSL