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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 | . | 4.2 | 29 | 2.5 | 38 | 4.6 | 28 | 5.3 | 26 | 3.5 | 31 | 20.0 | 13 | |
101-200 tiges/ha | 1.8 | 45 | 6.0 | 24 | 3.4 | 32 | 5.7 | 25 | 4.3 | 29 | 4.3 | 29 | 25.5 | 12 | |
201-300 tiges/ha | 1.5 | 50 | 3.8 | 30 | 2.5 | 38 | 8.8 | 20 | 5.7 | 25 | 3.9 | 30 | 26.2 | 11 | |
301-400 tiges/ha | 0.4 | 100 | 2.6 | 35 | 2.4 | 38 | 2.7 | 35 | 1.8 | 45 | 1.4 | 50 | 11.3 | 17 | |
401-500 tiges/ha | 0.7 | 70 | 2.0 | 41 | 1.3 | 50 | 2.4 | 38 | 1.1 | 58 | 0.7 | 70 | 8.2 | 20 | |
501-600 tiges/ha | 0.0 | . | 1.3 | 50 | 1.0 | 58 | 0.4 | 100 | 0.7 | 71 | 1.1 | 58 | 4.5 | 28 | |
>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 | 21.2 | 12 | 13.9 | 16 | 25.4 | 11 | 18.9 | 13 | 14.9 | 15 | 98.6 | 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 | 136.8 | 4 | 49.7 | 8 | 34.6 | 10 | 36.8 | 9 | 43.9 | 8 | 47.9 | 7 | 349.7 | 3 | |
101-200 tiges/ha | 127.2 | 4 | 56.6 | 7 | 28.6 | 11 | 23.0 | 12 | 32.4 | 10 | 30.7 | 10 | 298.6 | 3 | |
201-300 tiges/ha | 85.7 | 6 | 32.8 | 10 | 24.8 | 12 | 16.4 | 14 | 29.4 | 11 | 29.6 | 10 | 218.7 | 4 | |
301-400 tiges/ha | 42.3 | 9 | 23.9 | 12 | 18.1 | 13 | 6.3 | 23 | 13.8 | 16 | 17.2 | 14 | 121.6 | 5 | |
401-500 tiges/ha | 15.1 | 15 | 10.2 | 18 | 6.7 | 23 | 4.9 | 27 | 5.7 | 25 | 7.0 | 22 | 49.6 | 8 | |
501-600 tiges/ha | 7.6 | 21 | 5.9 | 24 | 3.2 | 33 | 2.6 | 38 | 2.5 | 38 | 3.6 | 31 | 25.4 | 12 | |
>600 tiges/ha | 1.7 | 45 | 4.0 | 29 | 4.6 | 27 | 0.7 | 71 | 1.8 | 45 | 1.5 | 50 | 14.4 | 15 | |
total | 416.4 | 1 | 183.2 | 3 | 120.6 | 5 | 90.7 | 6 | 129.5 | 5 | 137.6 | 3 | 1077.9 | 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. 1335959. Birmensdorf, Swiss Federal Research Institute WSL