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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 coulées de boue/glissements de terrain (2022) | nombre de tiges/ha (DHP ≥36 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 | 48.4 | 5.0 | 46.2 | 5.3 | 38.5 | 5.4 | 59.0 | 4.3 | 56.0 | 5.2 | 72.2 | 3.8 | 55.3 | 2.0 | |
101-200 tiges/ha | 41.5 | 5.0 | 36.7 | 5.1 | 39.5 | 5.5 | 31.7 | 4.1 | 34.4 | 4.9 | 18.3 | 3.3 | 32.4 | 1.9 | |
201-300 tiges/ha | 8.1 | 2.8 | 12.5 | 3.5 | 15.9 | 4.1 | 7.0 | 2.2 | 8.6 | 2.9 | 7.9 | 2.3 | 9.5 | 1.2 | |
301-400 tiges/ha | 1.0 | 1.0 | 3.4 | 1.9 | 6.1 | 2.7 | 2.3 | 1.3 | 1.1 | 1.1 | 1.6 | 1.1 | 2.4 | 0.6 | |
401-500 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
501-600 tiges/ha | 0.0 | . | 1.1 | 1.1 | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 0.2 | |
>600 tiges/ha | 1.0 | 1.0 | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 0.2 | |
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 | 54.9 | 1.0 | 55.4 | 1.6 | 51.1 | 2.0 | 70.1 | 2.1 | 65.0 | 1.8 | 77.0 | 1.6 | 59.7 | 0.6 | |
101-200 tiges/ha | 34.7 | 1.0 | 30.1 | 1.5 | 31.9 | 1.9 | 22.5 | 1.9 | 26.4 | 1.7 | 19.7 | 1.5 | 29.7 | 0.6 | |
201-300 tiges/ha | 8.6 | 0.6 | 11.0 | 1.0 | 13.2 | 1.4 | 6.7 | 1.2 | 7.4 | 1.0 | 2.8 | 0.7 | 8.6 | 0.4 | |
301-400 tiges/ha | 1.3 | 0.3 | 2.7 | 0.5 | 2.9 | 0.7 | 0.4 | 0.3 | 0.9 | 0.4 | 0.3 | 0.2 | 1.5 | 0.2 | |
401-500 tiges/ha | 0.3 | 0.1 | 0.5 | 0.2 | 0.5 | 0.3 | 0.0 | . | 0.2 | 0.2 | 0.1 | 0.1 | 0.3 | 0.1 | |
501-600 tiges/ha | 0.0 | 0.0 | 0.1 | 0.1 | 0.2 | 0.2 | 0.0 | . | 0.0 | . | 0.0 | . | 0.1 | 0.0 | |
>600 tiges/ha | 0.0 | 0.0 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.0 | . | 0.1 | 0.0 | |
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 | 54.6 | 0.9 | 54.7 | 1.5 | 49.6 | 1.9 | 67.7 | 1.9 | 63.9 | 1.7 | 76.1 | 1.4 | 59.3 | 0.6 | |
101-200 tiges/ha | 35.0 | 1.0 | 30.7 | 1.4 | 32.8 | 1.8 | 24.5 | 1.7 | 27.4 | 1.6 | 19.5 | 1.4 | 30.0 | 0.6 | |
201-300 tiges/ha | 8.6 | 0.6 | 11.2 | 1.0 | 13.5 | 1.3 | 6.8 | 1.0 | 7.6 | 1.0 | 3.7 | 0.7 | 8.7 | 0.4 | |
301-400 tiges/ha | 1.3 | 0.2 | 2.7 | 0.5 | 3.3 | 0.7 | 0.9 | 0.4 | 0.9 | 0.4 | 0.5 | 0.3 | 1.6 | 0.2 | |
401-500 tiges/ha | 0.3 | 0.1 | 0.5 | 0.2 | 0.5 | 0.3 | 0.0 | . | 0.1 | 0.1 | 0.1 | 0.1 | 0.3 | 0.1 | |
501-600 tiges/ha | 0.0 | 0.0 | 0.2 | 0.1 | 0.2 | 0.2 | 0.0 | . | 0.0 | . | 0.0 | . | 0.1 | 0.0 | |
>600 tiges/ha | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | 0.0 | . | 0.1 | 0.0 | |
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. 1247515. Birmensdorf, Swiss Federal Research Institute WSL