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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 ≥24 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 | 0.7 | 71 | 1.8 | 45 | 2.4 | 38 | 2.1 | 41 | 1.4 | 50 | 5.0 | 26 | 13.5 | 16 | |
101-200 tiges/ha | 0.3 | 100 | 0.7 | 71 | 2.2 | 41 | 1.8 | 45 | 1.4 | 50 | 3.3 | 33 | 9.8 | 19 | |
201-300 tiges/ha | 1.8 | 45 | 2.3 | 38 | 1.3 | 50 | 2.8 | 35 | 1.0 | 58 | 3.4 | 33 | 12.7 | 17 | |
301-400 tiges/ha | 0.3 | 100 | 1.1 | 58 | 1.0 | 58 | 0.4 | 100 | 0.4 | 100 | 0.7 | 71 | 3.9 | 30 | |
401-500 tiges/ha | 0.0 | . | 0.4 | 100 | 0.3 | 100 | 0.7 | 71 | 0.0 | . | 0.8 | 71 | 2.1 | 41 | |
501-600 tiges/ha | 0.0 | . | 0.6 | 70 | 0.7 | 71 | 0.0 | . | 0.4 | 100 | 0.4 | 100 | 2.1 | 41 | |
>600 tiges/ha | 0.0 | . | 0.3 | 100 | 0.4 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 0.7 | 71 | |
total | 3.2 | 33 | 7.4 | 22 | 8.3 | 20 | 7.8 | 21 | 4.6 | 28 | 13.5 | 16 | 44.8 | 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 | 136.1 | 4 | 52.0 | 8 | 34.7 | 10 | 39.2 | 9 | 47.8 | 8 | 46.4 | 7 | 356.3 | 3 | |
101-200 tiges/ha | 128.7 | 4 | 61.9 | 7 | 29.8 | 11 | 26.9 | 11 | 35.3 | 10 | 31.6 | 10 | 314.2 | 3 | |
201-300 tiges/ha | 85.4 | 6 | 34.2 | 10 | 26.0 | 11 | 22.4 | 12 | 34.1 | 10 | 30.2 | 10 | 232.2 | 3 | |
301-400 tiges/ha | 42.3 | 9 | 25.4 | 11 | 19.4 | 13 | 8.6 | 20 | 15.2 | 15 | 18.0 | 13 | 128.9 | 5 | |
401-500 tiges/ha | 15.8 | 15 | 11.8 | 17 | 7.7 | 21 | 6.7 | 23 | 6.8 | 23 | 7.0 | 22 | 55.8 | 8 | |
501-600 tiges/ha | 7.6 | 21 | 6.6 | 23 | 3.5 | 32 | 2.9 | 35 | 2.8 | 35 | 4.3 | 29 | 27.8 | 11 | |
>600 tiges/ha | 1.7 | 45 | 5.1 | 26 | 5.0 | 26 | 1.4 | 50 | 1.8 | 45 | 1.5 | 50 | 16.5 | 14 | |
total | 417.6 | 1 | 197.0 | 3 | 126.1 | 5 | 108.2 | 5 | 143.8 | 4 | 139.0 | 3 | 1131.7 | 1 | |
total | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 136.8 | 4 | 53.9 | 8 | 37.1 | 10 | 41.4 | 9 | 49.2 | 8 | 51.4 | 7 | 369.7 | 3 | |
101-200 tiges/ha | 129.0 | 4 | 62.6 | 7 | 32.0 | 10 | 28.7 | 11 | 36.7 | 9 | 35.0 | 9 | 324.0 | 3 | |
201-300 tiges/ha | 87.2 | 6 | 36.5 | 9 | 27.3 | 11 | 25.2 | 11 | 35.1 | 10 | 33.5 | 9 | 244.9 | 3 | |
301-400 tiges/ha | 42.7 | 9 | 26.5 | 11 | 20.4 | 13 | 9.0 | 19 | 15.6 | 15 | 18.7 | 13 | 132.8 | 5 | |
401-500 tiges/ha | 15.8 | 15 | 12.2 | 16 | 8.0 | 21 | 7.4 | 22 | 6.8 | 23 | 7.7 | 21 | 57.8 | 8 | |
501-600 tiges/ha | 7.6 | 21 | 7.2 | 22 | 4.3 | 29 | 2.9 | 35 | 3.2 | 33 | 4.7 | 27 | 29.9 | 11 | |
>600 tiges/ha | 1.7 | 45 | 5.4 | 25 | 5.4 | 25 | 1.4 | 50 | 1.8 | 45 | 1.5 | 50 | 17.2 | 14 | |
total | 420.7 | 1 | 204.4 | 3 | 134.4 | 5 | 116.0 | 5 | 148.4 | 4 | 152.5 | 2 | 1176.4 | 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. 1248921. Birmensdorf, Swiss Federal Research Institute WSL