Cycas tanqingii

D.Yue Wang

Plante

NTLR Monde (IUCN)

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Calcul du tissu écologique de Cycas tanqingii.

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Liste rouge IUCN

NT · Quasi menacéecritères B1a→Stable

Évaluation complète

Évaluation: 2023 · v3.1
Altitude: – 800 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

Cycas tanqingii is regarded as locally abundant. Surveys of the subpopulation in China (2019) recorded an estimated 95,500 adult plants (X. Feng pers. comm.) which provides a lower limit for overall population size. No surveys have been conducted in Vietnam so the upper limit for population numbers is unknown. The bulk of the subpopulation in China occurs within a protected area and there is good recruitment with seeds and seedlings present.

Menaces identifiées(1 menace classée CMP-IUCN)

2_1_4
Scale Unknown/Unrecorded
Ongoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

The main subpopulation in China is included in a protected area and is regarded as stable so any threat from habitat loss in China appears to have been mitigated. The status of the subpopulations in Vietnam is not known but satellite imagery shows that lowland areas have been extensively cleared for agriculture.

Habitats préférentiels (classification IUCN)

1_6Forest - Subtropical/Tropical Moist Lowland

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

This species is listed in Appendix II of the CITES Appendices. Cycas tanqingii was assessed as Endangered B1b(iii,v)c(i,ii,iv) in the national Red List for China (Qin et al. 2017). Subpopulations of this species occur in the Huanglian Mountain National Nature Reserve, Yunnan province, China. The status of the subpopulation in the reserve has been assessed as 'good'. The population is protected with certain measures; the number of plants has increased to a certain extent; the number of pests and diseases is mild; and the population is relatively healthy (Xi et al. 2022). The long-term monitoring of subpopulations will support the conservation of this species.

Actions de conservation (2)Conservation Actions Classification Scheme — IUCNExpert

1_1Site/area protection
4_3Awareness & communications

Stress écologiques (2)Stresses Classification — IUCNExpert

1_1Ecosystem conversion
1_2Ecosystem degradation

Priorités de recherche (4)Research Needed Classification — IUCNExpert

1_1Taxonomy
1_2Population size, distribution & trends
1_3Life history & ecology
3_1Population trends

Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert

Royaumes biogéographiques

Indomalayan

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

CycadShrub - large

Références bibliographiques (8)Sources scientifiques de l'évaluation IUCNExpert

IUCN. 2023. The IUCN Red List of Threatened Species. Version 2023-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 07 December 2023).
Xi, H., Wang, Y., Pan, Y., Xu, T., Zhan, Q., Liu, J., Feng, X. and Gong, X. 2022. Resources and protection of Cycas plants in China. Biodiversity Science 30: 21495.
Qin, H., Yang, Y., Dong, S., He, Q., Jia, Y., Zhao, L., Yu, S., Liu, H., Liu, B., Yan, Y., Xiang, J., Xia, N., Peng, H., Li, Z., Zhang, Z., He, X., Yin, L., Lin, Y., Liu, Q., Hou, Y., Liu, Y., Liu, Q., Cao, W., Li, J., Chen, S., Jin, X., Gao, T., Chen, W., Ma, H., Geng, Y., Jin, X., Chang, C., Jiang, H., Cai, L., Zang, C., Wu, J., Ye, J., Lai, Y., Liu, B., Lin, Q. and Xue, N. 2017. Threatened species list of China's higher plants. Biodiversity Science 17: 696-745.
Hill, K.D. 2008. The genus Cycas (Cycadaceae) in China. Telopea 12(1): 71-118.
Osborne, R., Hill, K.D., Nguyen, H.T. and Phan Ke, L. 2007. Cycads of Vietnam. R. Osborne and W. van Eeden, Brisbane.
Hill K.D., Nguyen, H.T. and Loc, P.K. 2004. The Genus Cycas (Cycadaceae) in Vietnam. The Botanical review 70(2): 134-193.
Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon.
Hill, K.D. and Stevenson, D.W. 1998 - 2006. The Cycad Pages. Available at: <a href="http://plantnet.rbgsyd.nsw.gov.au/PlantNet/cycad/index.html">http://plantnet.rbgsyd.nsw.gov.au/PlantNet/cycad/index.html</a>.

Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Bösenberg, J.D.

evaluator

Donaldson, J.S.

Bösenberg, J.D. 2023. Cycas tanqingii. The IUCN Red List of Threatened Species 2023: e.T42086A69827277. Accessed on 05 May 2026.