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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 ≥12 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 | 0.0 | . | 0.8 | 71 | 1.3 | 50 | 0.7 | 71 | 0.3 | 100 | 2.0 | 41 | 5.2 | 26 | |
101-200 tiges/ha | 0.4 | 100 | 0.6 | 71 | 0.7 | 71 | 0.4 | 100 | 1.8 | 45 | 1.5 | 50 | 5.4 | 26 | |
201-300 tiges/ha | 0.3 | 100 | 0.3 | 100 | 1.0 | 58 | 1.8 | 45 | 0.4 | 100 | 1.1 | 58 | 4.9 | 27 | |
301-400 tiges/ha | 1.0 | 58 | 1.4 | 50 | 1.3 | 50 | 0.7 | 71 | 0.7 | 71 | 2.2 | 41 | 7.4 | 22 | |
401-500 tiges/ha | 0.3 | 100 | 0.7 | 71 | 1.4 | 50 | 1.8 | 45 | 0.4 | 100 | 1.2 | 57 | 5.7 | 25 | |
501-600 tiges/ha | 0.0 | . | 1.5 | 50 | 1.4 | 50 | 0.7 | 71 | 0.0 | . | 0.6 | 70 | 4.2 | 29 | |
>600 tiges/ha | 1.1 | 58 | 2.4 | 38 | 1.1 | 58 | 2.1 | 41 | 1.1 | 58 | 4.9 | 27 | 12.6 | 17 | |
total | 3.2 | 33 | 7.7 | 21 | 8.3 | 20 | 8.2 | 21 | 4.6 | 28 | 13.5 | 16 | 45.5 | 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 | 49.4 | 8 | 20.9 | 13 | 18.1 | 14 | 19.6 | 13 | 22.9 | 12 | 19.3 | 13 | 150.1 | 5 | |
101-200 tiges/ha | 76.1 | 6 | 31.0 | 10 | 19.0 | 13 | 16.3 | 15 | 20.4 | 13 | 22.1 | 12 | 184.9 | 4 | |
201-300 tiges/ha | 74.6 | 6 | 33.0 | 10 | 23.1 | 12 | 18.0 | 14 | 29.3 | 11 | 14.8 | 15 | 192.8 | 4 | |
301-400 tiges/ha | 71.3 | 6 | 31.7 | 10 | 18.4 | 14 | 13.8 | 16 | 18.3 | 14 | 23.0 | 12 | 176.5 | 4 | |
401-500 tiges/ha | 50.0 | 8 | 23.8 | 12 | 14.8 | 15 | 16.4 | 14 | 14.3 | 16 | 17.5 | 14 | 136.8 | 5 | |
501-600 tiges/ha | 37.5 | 9 | 20.8 | 13 | 10.0 | 18 | 8.5 | 20 | 12.7 | 16 | 12.9 | 16 | 102.4 | 6 | |
>600 tiges/ha | 63.4 | 7 | 42.4 | 9 | 27.3 | 11 | 22.4 | 12 | 31.2 | 10 | 35.7 | 9 | 222.3 | 4 | |
total | 422.2 | 1 | 203.5 | 3 | 130.8 | 5 | 115.1 | 5 | 149.2 | 4 | 145.3 | 3 | 1166.0 | 1 | |
total | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 49.4 | 8 | 21.7 | 13 | 19.4 | 14 | 20.3 | 13 | 23.2 | 12 | 21.3 | 12 | 155.4 | 5 | |
101-200 tiges/ha | 76.5 | 6 | 31.7 | 10 | 19.7 | 13 | 16.7 | 14 | 22.2 | 12 | 23.6 | 12 | 190.3 | 4 | |
201-300 tiges/ha | 75.0 | 6 | 33.3 | 10 | 24.1 | 12 | 19.8 | 13 | 29.7 | 11 | 15.9 | 14 | 197.7 | 4 | |
301-400 tiges/ha | 72.3 | 6 | 33.1 | 10 | 19.8 | 13 | 14.6 | 15 | 19.0 | 13 | 25.2 | 11 | 183.9 | 4 | |
401-500 tiges/ha | 50.3 | 8 | 24.5 | 12 | 16.3 | 14 | 18.2 | 14 | 14.7 | 15 | 18.6 | 13 | 142.6 | 5 | |
501-600 tiges/ha | 37.5 | 9 | 22.3 | 12 | 11.4 | 17 | 9.2 | 19 | 12.7 | 16 | 13.5 | 16 | 106.7 | 6 | |
>600 tiges/ha | 64.5 | 7 | 44.7 | 8 | 28.4 | 11 | 24.5 | 12 | 32.3 | 10 | 40.6 | 8 | 234.9 | 3 | |
total | 425.4 | 1 | 211.2 | 3 | 139.1 | 4 | 123.2 | 5 | 153.8 | 4 | 158.8 | 2 | 1211.5 | 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. 1311014. Birmensdorf, Swiss Federal Research Institute WSL