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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 | 1.6 | 35 | 3.4 | 24 | 2.8 | 27 | 6.2 | 18 | 2.0 | 32 | 9.0 | 14 | 24.9 | 9 | |
101-200 tiges/ha | 1.4 | 38 | 1.6 | 35 | 3.2 | 25 | 2.0 | 31 | 1.8 | 33 | 1.9 | 33 | 11.7 | 13 | |
201-300 tiges/ha | 0.2 | 100 | 0.4 | 71 | 1.3 | 37 | 0.6 | 58 | 0.2 | 100 | 0.2 | 100 | 2.9 | 26 | |
301-400 tiges/ha | 0.2 | 100 | 0.2 | 100 | 0.2 | 100 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.8 | 50 | |
401-500 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 100 | 0.0 | . | 0.2 | 100 | |
501-600 tiges/ha | 0.0 | . | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 100 | |
>600 tiges/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
total | 3.3 | 24 | 5.7 | 18 | 7.5 | 16 | 9.0 | 15 | 4.2 | 22 | 11.0 | 13 | 40.7 | 7 | |
à l'extérieur | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 231.8 | 2 | 107.6 | 4 | 62.9 | 5 | 72.0 | 5 | 91.1 | 4 | 108.0 | 3 | 673.4 | 1 | |
101-200 tiges/ha | 148.3 | 3 | 60.7 | 5 | 40.3 | 7 | 26.3 | 8 | 38.1 | 7 | 28.1 | 7 | 341.8 | 2 | |
201-300 tiges/ha | 36.6 | 7 | 22.2 | 9 | 16.6 | 11 | 7.2 | 16 | 10.8 | 13 | 5.6 | 18 | 99.1 | 4 | |
301-400 tiges/ha | 5.4 | 19 | 5.4 | 19 | 4.2 | 22 | 0.8 | 50 | 1.4 | 38 | 0.8 | 50 | 17.9 | 10 | |
401-500 tiges/ha | 1.4 | 38 | 1.0 | 45 | 0.6 | 58 | 0.0 | . | 0.0 | . | 0.2 | 100 | 3.2 | 25 | |
501-600 tiges/ha | 0.2 | 100 | 0.2 | 100 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 0.6 | 58 | |
>600 tiges/ha | 0.4 | 71 | 0.2 | 100 | 0.2 | 100 | 0.2 | 100 | 0.2 | 100 | 0.0 | . | 1.1 | 41 | |
total | 424.1 | 1 | 197.2 | 2 | 125.0 | 4 | 106.5 | 4 | 141.6 | 3 | 142.7 | 2 | 1137.2 | 1 | |
total | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 233.4 | 2 | 110.9 | 4 | 65.7 | 5 | 78.1 | 5 | 93.1 | 4 | 117.0 | 3 | 698.3 | 1 | |
101-200 tiges/ha | 149.7 | 3 | 62.2 | 5 | 43.5 | 6 | 28.3 | 8 | 39.9 | 7 | 29.9 | 7 | 353.5 | 2 | |
201-300 tiges/ha | 36.8 | 7 | 22.6 | 9 | 17.9 | 10 | 7.8 | 15 | 11.0 | 13 | 5.8 | 18 | 102.0 | 4 | |
301-400 tiges/ha | 5.6 | 19 | 5.6 | 19 | 4.4 | 21 | 1.0 | 45 | 1.4 | 38 | 0.8 | 50 | 18.7 | 10 | |
401-500 tiges/ha | 1.4 | 38 | 1.0 | 45 | 0.6 | 58 | 0.0 | . | 0.2 | 100 | 0.2 | 100 | 3.4 | 24 | |
501-600 tiges/ha | 0.2 | 100 | 0.4 | 71 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 0.8 | 50 | |
>600 tiges/ha | 0.4 | 71 | 0.2 | 100 | 0.2 | 100 | 0.2 | 100 | 0.2 | 100 | 0.0 | . | 1.1 | 41 | |
total | 427.4 | 1 | 203.0 | 2 | 132.5 | 3 | 115.5 | 4 | 145.8 | 3 | 153.7 | 2 | 1177.9 | 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. 1249945. Birmensdorf, Swiss Federal Research Institute WSL