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région de forêt protectrice | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 ≥36 cm; vifs sur pied; par classes) | % | ± | % | ± | % | ± | % | ± | % | ± | % | ± | % | ± |
pas d'indication | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
101-200 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
201-300 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
301-400 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
401-500 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
501-600 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
>600 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
total | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
à l'intérieur | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 0.4 | 0.2 | 1.7 | 0.6 | 1.8 | 0.7 | 5.6 | 1.4 | 1.2 | 0.6 | 7.9 | 1.5 | 2.2 | 0.3 | |
101-200 tiges/ha | 0.3 | 0.1 | 1.3 | 0.5 | 3.3 | 1.0 | 2.2 | 0.9 | 1.2 | 0.6 | 1.6 | 0.7 | 1.2 | 0.2 | |
201-300 tiges/ha | 0.0 | . | 0.4 | 0.3 | 0.8 | 0.5 | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 0.1 | |
301-400 tiges/ha | 0.1 | 0.1 | 0.2 | 0.2 | 0.3 | 0.3 | 0.0 | . | 0.0 | . | 0.0 | . | 0.1 | 0.1 | |
401-500 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
501-600 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
>600 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
total | 0.8 | 0.3 | 3.6 | 0.8 | 6.1 | 1.3 | 7.8 | 1.6 | 2.4 | 0.8 | 9.5 | 1.6 | 3.7 | 0.3 | |
à l'extérieur | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 53.5 | 1.3 | 55.6 | 2.1 | 43.9 | 2.6 | 58.1 | 2.9 | 56.0 | 2.6 | 63.2 | 2.5 | 54.6 | 0.8 | |
101-200 tiges/ha | 35.3 | 1.3 | 26.5 | 1.9 | 30.1 | 2.5 | 26.7 | 2.7 | 31.6 | 2.5 | 21.6 | 2.2 | 30.4 | 0.8 | |
201-300 tiges/ha | 9.4 | 0.8 | 12.4 | 1.4 | 17.0 | 2.0 | 6.3 | 1.4 | 8.2 | 1.5 | 4.8 | 1.2 | 9.8 | 0.5 | |
301-400 tiges/ha | 0.9 | 0.3 | 1.5 | 0.5 | 2.0 | 0.8 | 0.8 | 0.5 | 1.5 | 0.7 | 0.6 | 0.4 | 1.2 | 0.2 | |
401-500 tiges/ha | 0.0 | . | 0.6 | 0.3 | 0.3 | 0.3 | 0.0 | . | 0.0 | . | 0.3 | 0.3 | 0.2 | 0.1 | |
501-600 tiges/ha | 0.1 | 0.1 | 0.0 | . | 0.3 | 0.3 | 0.0 | . | 0.0 | . | 0.0 | . | 0.1 | 0.0 | |
>600 tiges/ha | 0.1 | 0.1 | 0.0 | . | 0.3 | 0.3 | 0.4 | 0.4 | 0.3 | 0.3 | 0.0 | . | 0.1 | 0.1 | |
total | 99.2 | 0.3 | 96.4 | 0.8 | 93.9 | 1.3 | 92.2 | 1.6 | 97.6 | 0.8 | 90.5 | 1.6 | 96.3 | 0.3 | |
total | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 53.9 | 1.3 | 57.3 | 2.1 | 45.6 | 2.6 | 63.7 | 2.8 | 57.2 | 2.6 | 71.2 | 2.3 | 56.8 | 0.8 | |
101-200 tiges/ha | 35.6 | 1.3 | 27.8 | 1.9 | 33.4 | 2.6 | 28.9 | 2.7 | 32.8 | 2.5 | 23.1 | 2.2 | 31.6 | 0.8 | |
201-300 tiges/ha | 9.4 | 0.8 | 12.8 | 1.4 | 17.8 | 2.0 | 6.3 | 1.4 | 8.2 | 1.5 | 4.8 | 1.2 | 10.0 | 0.5 | |
301-400 tiges/ha | 1.0 | 0.3 | 1.6 | 0.5 | 2.3 | 0.8 | 0.8 | 0.5 | 1.5 | 0.7 | 0.6 | 0.4 | 1.2 | 0.2 | |
401-500 tiges/ha | 0.0 | . | 0.6 | 0.3 | 0.3 | 0.3 | 0.0 | . | 0.0 | . | 0.3 | 0.3 | 0.2 | 0.1 | |
501-600 tiges/ha | 0.1 | 0.1 | 0.0 | . | 0.3 | 0.3 | 0.0 | . | 0.0 | . | 0.0 | . | 0.1 | 0.0 | |
>600 tiges/ha | 0.1 | 0.1 | 0.0 | . | 0.3 | 0.3 | 0.4 | 0.4 | 0.3 | 0.3 | 0.0 | . | 0.1 | 0.1 | |
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. 1249489. Birmensdorf, Swiss Federal Research Institute WSL