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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 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 | 0.0 | . | 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 | 2.2 | 0.3 | 4.0 | 0.6 | 4.7 | 0.8 | 13.0 | 1.4 | 7.0 | 0.9 | 12.8 | 1.2 | 5.8 | 0.3 | |
101-200 tiges/ha | 1.9 | 0.3 | 3.2 | 0.5 | 4.8 | 0.8 | 7.0 | 1.0 | 4.3 | 0.7 | 3.2 | 0.6 | 3.4 | 0.2 | |
201-300 tiges/ha | 0.4 | 0.1 | 1.1 | 0.3 | 1.9 | 0.5 | 1.5 | 0.5 | 1.1 | 0.4 | 1.4 | 0.4 | 1.0 | 0.1 | |
301-400 tiges/ha | 0.0 | 0.0 | 0.3 | 0.2 | 0.7 | 0.3 | 0.5 | 0.3 | 0.1 | 0.1 | 0.3 | 0.2 | 0.3 | 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 | . | 0.1 | 0.1 | 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 | . | 0.0 | 0.0 | |
total | 4.6 | 0.4 | 8.7 | 0.9 | 12.1 | 1.3 | 22.1 | 1.7 | 12.5 | 1.2 | 17.7 | 1.4 | 10.5 | 0.4 | |
à l'extérieur | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 52.4 | 0.9 | 50.6 | 1.5 | 44.9 | 1.9 | 54.7 | 2.0 | 56.9 | 1.8 | 63.4 | 1.7 | 53.5 | 0.6 | |
101-200 tiges/ha | 33.1 | 1.0 | 27.5 | 1.4 | 28.0 | 1.7 | 17.5 | 1.6 | 23.1 | 1.5 | 16.2 | 1.3 | 26.6 | 0.5 | |
201-300 tiges/ha | 8.2 | 0.6 | 10.1 | 0.9 | 11.6 | 1.2 | 5.2 | 0.9 | 6.5 | 0.9 | 2.3 | 0.5 | 7.7 | 0.3 | |
301-400 tiges/ha | 1.3 | 0.2 | 2.5 | 0.5 | 2.5 | 0.6 | 0.3 | 0.2 | 0.8 | 0.3 | 0.2 | 0.2 | 1.3 | 0.1 | |
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 | 0.1 | 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 | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | 0.0 | . | 0.1 | 0.0 | |
total | 95.4 | 0.4 | 91.3 | 0.9 | 87.9 | 1.3 | 77.9 | 1.7 | 87.5 | 1.2 | 82.3 | 1.4 | 89.5 | 0.4 | |
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. 1247897. Birmensdorf, Swiss Federal Research Institute WSL