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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) | 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 | . | 3.5 | 32 | 2.5 | 38 | 4.6 | 28 | 3.2 | 33 | 2.8 | 35 | 16.6 | 14 | |
101-200 tiges/ha | 1.8 | 45 | 5.6 | 25 | 3.0 | 33 | 5.4 | 26 | 3.9 | 30 | 4.0 | 30 | 23.7 | 12 | |
201-300 tiges/ha | 1.5 | 50 | 3.8 | 30 | 2.5 | 38 | 8.4 | 20 | 5.4 | 26 | 3.6 | 31 | 25.1 | 12 | |
301-400 tiges/ha | 0.4 | 100 | 2.6 | 35 | 2.0 | 41 | 2.3 | 38 | 1.8 | 45 | 1.4 | 50 | 10.6 | 18 | |
401-500 tiges/ha | 0.7 | 70 | 1.7 | 45 | 1.3 | 50 | 2.4 | 38 | 1.1 | 58 | 0.7 | 70 | 7.9 | 21 | |
501-600 tiges/ha | 0.0 | . | 1.3 | 50 | 1.0 | 58 | 0.4 | 100 | 0.4 | 100 | 1.1 | 58 | 4.1 | 29 | |
>600 tiges/ha | 0.0 | . | 1.4 | 50 | 0.7 | 71 | 0.7 | 71 | 0.0 | . | 0.0 | . | 2.8 | 35 | |
total | 4.4 | 28 | 19.8 | 13 | 13.1 | 16 | 24.3 | 12 | 15.7 | 15 | 13.6 | 15 | 90.9 | 6 | |
à l'extérieur | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 131.0 | 4 | 40.8 | 9 | 25.9 | 12 | 23.2 | 12 | 29.4 | 10 | 28.6 | 10 | 278.9 | 3 | |
101-200 tiges/ha | 124.7 | 4 | 54.5 | 8 | 26.5 | 11 | 19.9 | 13 | 27.8 | 11 | 25.1 | 11 | 278.5 | 3 | |
201-300 tiges/ha | 84.3 | 6 | 32.1 | 10 | 22.3 | 12 | 15.0 | 15 | 25.2 | 11 | 26.1 | 11 | 204.9 | 4 | |
301-400 tiges/ha | 42.3 | 9 | 20.8 | 12 | 16.0 | 14 | 5.5 | 25 | 12.7 | 16 | 15.9 | 14 | 113.2 | 5 | |
401-500 tiges/ha | 14.7 | 15 | 9.5 | 19 | 6.7 | 23 | 4.6 | 28 | 5.4 | 26 | 7.0 | 22 | 47.8 | 8 | |
501-600 tiges/ha | 7.3 | 22 | 5.9 | 24 | 2.9 | 35 | 2.6 | 38 | 1.7 | 45 | 3.0 | 35 | 23.3 | 12 | |
>600 tiges/ha | 1.7 | 45 | 2.6 | 35 | 4.3 | 28 | 0.4 | 100 | 1.4 | 50 | 1.5 | 50 | 12.0 | 17 | |
total | 406.0 | 1 | 166.2 | 4 | 104.6 | 5 | 71.1 | 6 | 103.6 | 5 | 107.1 | 3 | 958.6 | 1 | |
total | pas d'indication | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . |
0-100 tiges/ha | 131.0 | 4 | 44.3 | 8 | 28.4 | 11 | 27.8 | 11 | 32.5 | 10 | 31.4 | 10 | 295.4 | 3 | |
101-200 tiges/ha | 126.6 | 4 | 60.1 | 7 | 29.5 | 11 | 25.2 | 11 | 31.7 | 10 | 29.1 | 10 | 302.3 | 3 | |
201-300 tiges/ha | 85.7 | 6 | 35.8 | 9 | 24.9 | 12 | 23.4 | 12 | 30.5 | 10 | 29.7 | 10 | 230.1 | 3 | |
301-400 tiges/ha | 42.7 | 9 | 23.4 | 12 | 17.9 | 13 | 7.9 | 21 | 14.5 | 15 | 17.3 | 14 | 123.7 | 5 | |
401-500 tiges/ha | 15.4 | 15 | 11.2 | 17 | 8.0 | 21 | 7.0 | 22 | 6.4 | 23 | 7.7 | 21 | 55.8 | 8 | |
501-600 tiges/ha | 7.3 | 22 | 7.2 | 22 | 3.9 | 30 | 2.9 | 35 | 2.1 | 41 | 4.0 | 30 | 27.4 | 11 | |
>600 tiges/ha | 1.7 | 45 | 4.0 | 29 | 5.1 | 26 | 1.1 | 58 | 1.4 | 50 | 1.5 | 50 | 14.8 | 15 | |
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. 1335936. Birmensdorf, Swiss Federal Research Institute WSL