Formanodendron doichangensis
(A.Camus) Nixon & Crepet
Pays · région · aire protégée · écorégion · biome
Pas d'interactions documentées pour cette espèce.
Liste rouge IUCN
EN · En dangercritères B2ab(iii,v); C2a(i)↘Décroissante- Évaluation
- 2019 · v3.1
- Altitude
- 1020 – 1730 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
Population size and trend are unknown, but a strong genetic differentiation and very low gene flow were found among locations (Sun et al. 2011). The density varies from 2 to 35 trees per 100 m2, with almost 50% or more of adult trees. The total number of adult trees was estimated to 427 in several plots located in PR China (Sun et al. 2006). The species is found as isolated individuals (Sun et al. 2004).
Menaces identifiées(3 menaces classées CMP-IUCN)
2_1_4Scale Unknown/UnrecordedUnknownUnknownOngoing5_3_1Intentional use: (subsistence/small scale) [harvest]UnknownUnknownOngoing8_1_1Unspecified speciesUnknownUnknownOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
This species is threatened by vegetation destruction due to land-use change to agriculture, cuttings for fuelwood as well as communities invasion by alien species inhibiting species regeneration. The habitats this species is found in are severely damaged and subpopulations are facing a high risk of extinction (Sun et al. 2006).
Habitats préférentiels (classification IUCN)
1_6Forest - Subtropical/Tropical Moist Lowland1_9Forest - Subtropical/Tropical Moist Montane
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
The species is now part of a conservation plan. Ex situ conservation of 2,000 saplings from seeds at the Kunming Botanic Garden, Chinese Academy of Sciences (Kunming, Yunnan Province, China) were used for a population reinforcement experiment in the Banli village of the Lancang county (247 selected saplings) (Sun et al. 2011). One subpopulation is currently in a protected area (the Canyuan county). A global ex situ conservation plan should be developed, as well as population reinforcement. Subpopulations are not efficiently protected yet should be included in Natural Protected Areas. It is found in two ex situ collections (BGCI 2018).
The species is currently on the Rare and Endangered Species List of China due to both its limited distribution and the destruction of its habitat (Fu 1992; Sun et al. 2004) and it is also China’s second-ranked taxon for priority of national protection (Anon 1999). This species was assessed as Data Deficient in 1998 (World Conservation Monitoring Centre).
The species is currently on the Rare and Endangered Species List of China due to both its limited distribution and the destruction of its habitat (Fu 1992; Sun et al. 2004) and it is also China’s second-ranked taxon for priority of national protection (Anon 1999). This species was assessed as Data Deficient in 1998 (World Conservation Monitoring Centre).
Actions de conservation (1)Conservation Actions Classification Scheme — IUCNExpert
3_4_2Genome resource bank
Stress écologiques (10)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_2Species disturbance2_2Species disturbance2_2Species disturbance2_3_2Competition2_3_7Reduced reproductive success
Usage & commerce (1)Use & Trade — IUCNExpert
7Fuels
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Indomalayan
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
Tree - large
Références bibliographiques (10)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2019. The IUCN Red List of Threatened Species. Version 2019-2. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 04 July 2019).
- BGCI (Botanic Gardens Conservation International). 2018. PlantSearch online database. Richmond, UK Available at: <a href="www.bgci.org/plant_search.php">www.bgci.org/plant_search.php</a>. (Accessed: 2018).
- Sun, W.B., Zhou, Y., Han, C.Y., Chen, G., Zheng, Y.L. 2011. <i>Trigonobalanus</i>. <i>Wild Crop Relatives: Genomic and Breeding Resources, Forest Trees</i>, Springer-Verlag, Berlin Heidelberg.
- Ng, S.C. and Lin, J.Y. 2008. A new distribution record for <i>Trigonobalanus verticillata</i> (Fagaceae) from Hainan Island, South China. <i>Kew Bulletin</i> 63: 341–344.
- Chen, G., Sun, W.B., Han, C.Y. and Coombes, A. 2007. Karyomorphology of endangered <i>Trigonobalanus doichangensis</i> (A. Camus) Forman (Fagaceae) and its taxonomic and biogeographical implications. <i>Bot J Linn Soc</i> 154: 321–330.
- Sun, W.B., Zhou, Y., Han, C.Y., Zeng, C.X., Shi, X.D., Xiang, Q.B., Coombes, A. 2006. Status and conservation of <i>Trigonobalanus doichangensis</i> (A. Camus) Forman (Fagaceae). <i>Biodivers Conserv</i> 15: 1303-1318.
- Sun W.B., Zhou, Y. and Zhao, J.C. 2004. Current distribution, population attributes and biological characters of <i>Trigonobalanus doichangensis</i> in relation to its conservation. <i>Acta Ecologica Sinica</i> 24: 352–358.
- Anon. 1999. List of National key protected wild plants. <i>The order of National Forestry Bureau and Agriculture Ministry of China</i> 4: 2-13.
- World Conservation Monitoring Centre. 1998. <i>Trigonobalanus doichangensis</i>. <i>The IUCN Red List of Threatened Species</i> 1998: e.T31984A9667469.
- Fu, L.-K. 1992. <i>China Plant Red Data Book - Rare and Endangered Plants: Volume 1</i>. Science Press, Beijing, China.
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Hinsinger, D.D.
evaluator
Beech, E.
Hinsinger, D.D. 2019. Trigonobalanus doichangensis. The IUCN Red List of Threatened Species 2019: e.T31984A2808014. Accessed on 05 May 2026.
Répartition mondiale
Aucune observation géoréférencée avec précision suffisante (<10 km) dans GBIF pour cette espèce.
Consulter sur les bases externes
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (3)— redirigent vers cette page
- Quercus daichangensisA.Camus
- Quercus doichangensisA.Camus
- Trigonobalanus doichangensis(A.Camus) Forman
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).