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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 avalanches (2022) | nombre de tiges/ha (DHP ≥24 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 | 0.1 | 0.1 | 2.5 | 0.5 | 2.8 | 0.7 | 5.5 | 1.0 | 3.1 | 0.7 | 2.9 | 0.6 | 2.1 | 0.2 | |
101-200 tiges/ha | 0.4 | 0.1 | 2.5 | 0.5 | 2.5 | 0.6 | 5.9 | 1.0 | 4.0 | 0.7 | 3.5 | 0.7 | 2.3 | 0.2 | |
201-300 tiges/ha | 0.2 | 0.1 | 2.6 | 0.5 | 1.7 | 0.5 | 5.4 | 1.0 | 2.9 | 0.6 | 1.6 | 0.5 | 1.8 | 0.2 | |
301-400 tiges/ha | 0.2 | 0.1 | 1.2 | 0.3 | 2.1 | 0.6 | 3.1 | 0.7 | 2.5 | 0.6 | 0.6 | 0.3 | 1.2 | 0.1 | |
401-500 tiges/ha | 0.1 | 0.1 | 1.0 | 0.3 | 0.9 | 0.4 | 1.3 | 0.5 | 0.6 | 0.3 | 0.5 | 0.3 | 0.6 | 0.1 | |
501-600 tiges/ha | 0.0 | . | 0.6 | 0.3 | 0.6 | 0.3 | 1.3 | 0.5 | 0.0 | . | 0.1 | 0.1 | 0.3 | 0.1 | |
>600 tiges/ha | 0.0 | . | 0.4 | 0.2 | 0.5 | 0.3 | 0.6 | 0.3 | 0.0 | . | 0.4 | 0.2 | 0.2 | 0.1 | |
total | 1.1 | 0.2 | 10.8 | 1.0 | 11.0 | 1.2 | 23.1 | 1.8 | 13.0 | 1.3 | 9.6 | 1.1 | 8.4 | 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 | 22.4 | 0.8 | 20.4 | 1.3 | 24.2 | 1.7 | 33.1 | 2.0 | 31.3 | 1.7 | 45.3 | 1.8 | 27.1 | 0.6 | |
101-200 tiges/ha | 26.5 | 1.0 | 23.0 | 1.3 | 18.1 | 1.5 | 19.3 | 1.7 | 22.7 | 1.6 | 20.3 | 1.5 | 23.1 | 0.6 | |
201-300 tiges/ha | 25.4 | 0.9 | 21.7 | 1.3 | 18.9 | 1.5 | 10.9 | 1.3 | 17.1 | 1.4 | 14.2 | 1.3 | 20.3 | 0.5 | |
301-400 tiges/ha | 14.3 | 0.8 | 11.2 | 1.0 | 12.7 | 1.3 | 8.1 | 1.2 | 8.2 | 1.0 | 7.0 | 1.0 | 11.4 | 0.4 | |
401-500 tiges/ha | 6.7 | 0.5 | 6.2 | 0.8 | 7.6 | 1.0 | 3.3 | 0.8 | 4.5 | 0.8 | 2.6 | 0.6 | 5.6 | 0.3 | |
501-600 tiges/ha | 2.2 | 0.3 | 3.3 | 0.6 | 2.7 | 0.6 | 1.5 | 0.5 | 2.0 | 0.5 | 0.9 | 0.4 | 2.2 | 0.2 | |
>600 tiges/ha | 1.5 | 0.3 | 3.3 | 0.6 | 4.8 | 0.8 | 0.7 | 0.4 | 1.2 | 0.4 | 0.1 | 0.1 | 1.9 | 0.2 | |
total | 98.9 | 0.2 | 89.2 | 1.0 | 89.0 | 1.2 | 76.9 | 1.8 | 87.0 | 1.3 | 90.4 | 1.1 | 91.6 | 0.4 | |
total | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 22.5 | 0.8 | 22.9 | 1.3 | 27.0 | 1.7 | 38.6 | 2.1 | 34.4 | 1.8 | 48.1 | 1.8 | 29.2 | 0.6 | |
101-200 tiges/ha | 26.9 | 1.0 | 25.5 | 1.4 | 20.6 | 1.6 | 25.2 | 1.9 | 26.8 | 1.7 | 23.8 | 1.6 | 25.4 | 0.6 | |
201-300 tiges/ha | 25.6 | 0.9 | 24.3 | 1.4 | 20.5 | 1.6 | 16.2 | 1.6 | 20.0 | 1.5 | 15.8 | 1.4 | 22.1 | 0.5 | |
301-400 tiges/ha | 14.5 | 0.8 | 12.4 | 1.1 | 14.8 | 1.4 | 11.2 | 1.3 | 10.7 | 1.2 | 7.6 | 1.0 | 12.5 | 0.4 | |
401-500 tiges/ha | 6.7 | 0.5 | 7.2 | 0.8 | 8.5 | 1.1 | 4.6 | 0.9 | 5.1 | 0.8 | 3.1 | 0.7 | 6.2 | 0.3 | |
501-600 tiges/ha | 2.2 | 0.3 | 3.9 | 0.6 | 3.3 | 0.7 | 2.8 | 0.7 | 2.0 | 0.5 | 1.0 | 0.4 | 2.5 | 0.2 | |
>600 tiges/ha | 1.5 | 0.3 | 3.7 | 0.6 | 5.3 | 0.9 | 1.3 | 0.5 | 1.2 | 0.4 | 0.6 | 0.3 | 2.2 | 0.2 | |
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. 1335013. Birmensdorf, Swiss Federal Research Institute WSL