Pterocarya hupehensis

Skan

Plante

VULR Monde (IUCN)

1 photo · Licences CC (Wikimedia Commons / iNaturalist)Click pour agrandir

Filtrer le graphe par contexte spatialPays · région · aire protégée · écorégion · biome

Graphe en cours d’indexation

Calcul du tissu écologique de Pterocarya hupehensis.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).

Liste rouge IUCN

VU · Vulnérablecritères C1+2a(i)↘Décroissante

Évaluation complète

Évaluation: 2019 · v3.1
Altitude: 700 – 2000 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

The total population of Pterocarya hupehensis is estimated to be composed of 2,000 to 5,000 mature individuals distributed in 80 localities. No known subpopulations exceed 1,000 individuals. The subpopulations are often composed of a few dozen individuals, with very poor seedling production. Many P. hupehensis subpopulations have been severely impacted or even destroyed by the logging of the corridors near small rivers and streams in the mountains. Currently, most of the subpopulations are located in nature reserves. It is projected that more than 10% of the population will be lost within the next 100 years.

Menaces identifiées(6 menaces classées CMP-IUCN)

1_3
Tourism & recreation areas
Negligible declinesOngoing
2_1_3
Agro-industry farming
Negligible declinesOngoing
2_2_2
Agro-industry plantations
Negligible declinesOngoing
5_3_1
Intentional use: (subsistence/small scale) [harvest]
Negligible declinesOngoing
7_2_9
Small dams
Negligible declinesFuture
4_1
Roads & railroads
Slow, Significant DeclinesOngoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

The main threats to Pterocarya hupehensis comprise of the destruction or alteration of its habitat to construct roads and the conversion of riparian habitats to plantations. Corridors along rivers are sometimes logged by the local population for a cheap wood source. Despite a very intense production of seeds, the regeneration of the species seems to be very weak in its natural habitat, with a general absence of seedlings. The destruction of its habitat combined with a very low number of individuals can lead to a quick disappearance of any subpopulations. Even if most of the remaining subpopulations are located in nature reserves, the species is still facing direct damages due to the development of primary and secondary roads and a lack of global management.

Habitats préférentiels (classification IUCN)

1_4Forest - Temperate

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

The species is assessed as Least Concern in China (MEP and CAS 2014). It is necessary to reassess this species in light of the recent studies and fieldwork done in its distribution range (Kozlowski et al. 2018). Field explorations are still necessary to confirm ancient indications and to estimate more precisely the total number of individuals in the different subpopulations. The species also needs a global conservation plan to protect subpopulations in the different Provinces. It would be important to integrate the protection of the species and its habitat in the management plan of the nature reserves where the species grows. Generally, forested corridors along streams and rivers should be better conserved, especially in nature reserves across China. The species is not very common in botanic gardens and arboreta and is reported to have at least 18 ex situ collections worldwide (BGCI PlantSearch 2019). Ex situ conservation program should be initiated to protect the genetic diversity of this species in the different botanic gardens of China. Research focused on the natural regeneration of Pterocarya hupehensis stands and seed dormancy and germination are also necessary to fully understand the ecology of the species and its ability to survive in very small and isolated stands.

Actions de conservation (3)Conservation Actions Classification Scheme — IUCNExpert

3_4_1Captive breeding/artificial propagation
3_4_2Genome resource bank
5_1_2National level

Usage & commerce (1)Use & Trade — IUCNExpert

9Construction or structural materials
subsistance

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

Royaumes biogéographiques

Palearctic

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

Tree - large

Références bibliographiques (7)Sources scientifiques de l'évaluation IUCNExpert

IUCN. 2019. The IUCN Red List of Threatened Species. Version 2019-3. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 10 December 2019).
Kozlowski, G., Bétrisey, S. and Song, Y-G. 2018. Wingnuts (Pterocarya) and walnut family. Relict trees: linking the past, present and future. Natural History Museum Fribourg, Switzerland.
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).
CVH (Chinese Virtual Herbarium). 2018. Chinese Virtual Herbarium. Available at: <a href="http://www.cvh.org.cn/en">http://www.cvh.org.cn/en</a>. (Accessed: 2018).
Ministry of Environmental Protection and the Chinese Academy of Sciences. 2014. Chinese Red List of biodiversity - the volume of higher plants.
Fang, J., Wang, Z, Tang, Z. 2011. Atlas of Woody Plants in China. Higher Education Press, Beijing.
Zheng, Y.W. and Raven, P.H. 2003. Zelkova. Flora of China. Vol. 5. Ulmaceae – Basellaceae. Missouri Botanical Garden Press, St. Louis.

Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Kozlowski, G., Song, Y. & Bétrisey, S.

evaluator

Harvey-Brown, Y. & Rivers, M.C.

institutions

Botanic Gardens Conservation International

Kozlowski, G., Song, Y. & Bétrisey, S. 2019. Pterocarya hupehensis. The IUCN Red List of Threatened Species 2019: e.T66816108A152835141. Accessed on 05 May 2026.