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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) | 1000 ha | ±% | 1000 ha | ±% | 1000 ha | ±% | 1000 ha | ±% | 1000 ha | ±% | 1000 ha | ±% | 1000 ha | ±% |
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 | 1.4 | 50 | 2.5 | 38 | 2.8 | 35 | 5.4 | 26 | 1.1 | 58 | 9.2 | 19 | 22.4 | 12 | |
101-200 tiges/ha | 1.0 | 57 | 2.8 | 36 | 3.4 | 32 | 1.8 | 45 | 1.4 | 50 | 2.2 | 40 | 12.7 | 17 | |
201-300 tiges/ha | 0.4 | 100 | 0.7 | 71 | 0.4 | 100 | 0.3 | 100 | 0.4 | 100 | 0.0 | . | 2.1 | 41 | |
301-400 tiges/ha | 0.3 | 100 | 0.3 | 100 | 0.7 | 71 | 0.0 | . | 0.0 | . | 0.0 | . | 1.3 | 50 | |
401-500 tiges/ha | 0.0 | . | 0.3 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.3 | 100 | |
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 | 3.2 | 33 | 6.7 | 23 | 7.2 | 22 | 7.4 | 22 | 2.8 | 35 | 11.4 | 17 | 38.8 | 9 | |
à l'extérieur | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 245.5 | 2 | 97.8 | 5 | 51.6 | 8 | 52.1 | 8 | 61.6 | 7 | 70.4 | 5 | 579.0 | 2 | |
101-200 tiges/ha | 133.1 | 4 | 58.9 | 7 | 36.8 | 9 | 28.0 | 11 | 42.2 | 9 | 30.1 | 10 | 329.1 | 3 | |
201-300 tiges/ha | 23.4 | 12 | 18.3 | 13 | 17.4 | 13 | 5.4 | 25 | 11.3 | 17 | 7.3 | 22 | 83.2 | 6 | |
301-400 tiges/ha | 4.0 | 29 | 3.3 | 32 | 4.1 | 29 | 2.1 | 41 | 1.4 | 50 | 1.1 | 58 | 16.0 | 14 | |
401-500 tiges/ha | 1.1 | 58 | 1.0 | 58 | 0.6 | 71 | 0.0 | . | 0.0 | . | 0.0 | . | 2.7 | 35 | |
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 | . | 0.4 | 100 | 0.0 | . | 0.4 | 100 | 0.7 | 71 | |
total | 407.1 | 1 | 179.4 | 3 | 110.5 | 5 | 88.0 | 6 | 116.4 | 5 | 109.3 | 3 | 1010.7 | 1 | |
total | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 246.9 | 2 | 100.3 | 5 | 54.4 | 8 | 57.4 | 7 | 62.7 | 7 | 79.6 | 5 | 601.4 | 2 | |
101-200 tiges/ha | 134.1 | 4 | 61.8 | 7 | 40.2 | 9 | 29.8 | 10 | 43.6 | 8 | 32.3 | 9 | 341.7 | 3 | |
201-300 tiges/ha | 23.8 | 11 | 19.0 | 13 | 17.8 | 13 | 5.7 | 24 | 11.6 | 17 | 7.3 | 22 | 85.3 | 6 | |
301-400 tiges/ha | 4.4 | 27 | 3.6 | 30 | 4.7 | 27 | 2.1 | 41 | 1.4 | 50 | 1.1 | 58 | 17.3 | 14 | |
401-500 tiges/ha | 1.1 | 58 | 1.3 | 50 | 0.6 | 71 | 0.0 | . | 0.0 | . | 0.0 | . | 3.0 | 33 | |
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 | . | 0.4 | 100 | 0.0 | . | 0.4 | 100 | 0.7 | 71 | |
total | 410.3 | 1 | 186.1 | 3 | 117.8 | 5 | 95.4 | 5 | 119.2 | 5 | 120.7 | 3 | 1049.5 | 1 |
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. 1250097. Birmensdorf, Swiss Federal Research Institute WSL