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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 | 0.0 | . | 2.1 | 0.6 | 1.8 | 0.7 | 4.0 | 1.1 | 3.4 | 0.9 | 2.2 | 0.7 | 1.7 | 0.2 | |
101-200 tiges/ha | 0.4 | 0.2 | 3.0 | 0.7 | 2.4 | 0.8 | 4.6 | 1.1 | 2.8 | 0.8 | 2.7 | 0.8 | 2.1 | 0.2 | |
201-300 tiges/ha | 0.3 | 0.2 | 1.8 | 0.5 | 1.8 | 0.7 | 7.1 | 1.4 | 3.7 | 0.9 | 2.5 | 0.7 | 2.2 | 0.2 | |
301-400 tiges/ha | 0.1 | 0.1 | 1.2 | 0.4 | 2.0 | 0.7 | 2.2 | 0.8 | 1.2 | 0.5 | 0.9 | 0.4 | 1.0 | 0.2 | |
401-500 tiges/ha | 0.2 | 0.1 | 0.9 | 0.4 | 1.0 | 0.5 | 2.0 | 0.7 | 0.7 | 0.4 | 0.4 | 0.3 | 0.7 | 0.1 | |
501-600 tiges/ha | 0.0 | . | 0.6 | 0.3 | 0.7 | 0.4 | 0.3 | 0.3 | 0.5 | 0.3 | 0.7 | 0.4 | 0.4 | 0.1 | |
>600 tiges/ha | 0.0 | . | 0.6 | 0.3 | 0.5 | 0.4 | 0.9 | 0.5 | 0.0 | . | 0.0 | . | 0.3 | 0.1 | |
total | 1.1 | 0.3 | 10.3 | 1.2 | 10.2 | 1.5 | 21.2 | 2.2 | 12.3 | 1.6 | 9.4 | 1.4 | 8.3 | 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 | 32.8 | 1.2 | 25.5 | 1.7 | 27.0 | 2.2 | 34.8 | 2.5 | 30.9 | 2.2 | 33.5 | 2.1 | 30.9 | 0.7 | |
101-200 tiges/ha | 30.1 | 1.3 | 27.2 | 1.8 | 20.8 | 2.1 | 18.7 | 2.1 | 21.3 | 2.0 | 20.0 | 1.9 | 24.9 | 0.7 | |
201-300 tiges/ha | 20.3 | 1.1 | 16.2 | 1.5 | 18.1 | 1.9 | 13.6 | 1.8 | 19.4 | 1.9 | 18.7 | 1.9 | 18.3 | 0.7 | |
301-400 tiges/ha | 10.0 | 0.9 | 11.3 | 1.3 | 13.2 | 1.7 | 5.1 | 1.2 | 9.4 | 1.4 | 10.9 | 1.5 | 10.1 | 0.5 | |
401-500 tiges/ha | 3.5 | 0.5 | 4.8 | 0.9 | 4.8 | 1.1 | 4.0 | 1.0 | 3.9 | 0.9 | 4.4 | 1.0 | 4.1 | 0.3 | |
501-600 tiges/ha | 1.8 | 0.4 | 2.8 | 0.7 | 2.6 | 0.8 | 2.1 | 0.8 | 1.6 | 0.6 | 2.3 | 0.7 | 2.1 | 0.2 | |
>600 tiges/ha | 0.4 | 0.2 | 1.9 | 0.5 | 3.3 | 0.9 | 0.6 | 0.4 | 1.2 | 0.5 | 0.9 | 0.5 | 1.2 | 0.2 | |
total | 98.9 | 0.3 | 89.7 | 1.2 | 89.8 | 1.5 | 78.8 | 2.2 | 87.7 | 1.6 | 90.6 | 1.4 | 91.7 | 0.4 | |
total | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 32.8 | 1.2 | 27.6 | 1.8 | 28.7 | 2.3 | 38.8 | 2.5 | 34.3 | 2.2 | 35.7 | 2.1 | 32.6 | 0.7 | |
101-200 tiges/ha | 30.5 | 1.3 | 30.1 | 1.9 | 23.2 | 2.1 | 23.3 | 2.3 | 24.1 | 2.1 | 22.7 | 2.0 | 27.0 | 0.8 | |
201-300 tiges/ha | 20.6 | 1.1 | 18.0 | 1.6 | 19.9 | 2.0 | 20.8 | 2.2 | 23.1 | 2.0 | 21.1 | 1.9 | 20.5 | 0.7 | |
301-400 tiges/ha | 10.1 | 0.9 | 12.6 | 1.3 | 15.2 | 1.8 | 7.3 | 1.4 | 10.6 | 1.5 | 11.8 | 1.5 | 11.1 | 0.5 | |
401-500 tiges/ha | 3.8 | 0.5 | 5.8 | 0.9 | 5.8 | 1.2 | 6.0 | 1.3 | 4.6 | 1.0 | 4.9 | 1.0 | 4.8 | 0.4 | |
501-600 tiges/ha | 1.8 | 0.4 | 3.4 | 0.7 | 3.3 | 0.9 | 2.4 | 0.8 | 2.1 | 0.7 | 3.0 | 0.8 | 2.5 | 0.3 | |
>600 tiges/ha | 0.4 | 0.2 | 2.6 | 0.6 | 3.9 | 0.9 | 1.5 | 0.7 | 1.2 | 0.5 | 0.9 | 0.5 | 1.5 | 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. 1335390. Birmensdorf, Swiss Federal Research Institute WSL