舟翅桐属(锦葵科,梧桐亚科),中国植物一新分布属  

Pterocymbium R.Br(Malvaceae,Sterculioideae),a genus new to China

作　　者：赵明旭 谭运洪[3,4] 杨子诚 李金华 岩温的 陈飞 ZHAO Mingxu;TAN Yunhong;YANG Zicheng;LI Jinhua;YAN Wende;CHEN Fei(Southwest Institute of Survey and Design,National Forestry and Grassland Administration,Kunming 650000,China;Asian Elephant Research Center,National Forestry and Grassland Administration,Kunming 650000,China;Southeast Asia Biodiversity Research Institute,Chinese Academy of Sciences,Yezin,Nay Pyi Taw 05282,Myanmar;Center for Integrative Conservation,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Mengla,Yunnan 666303,China;Adiministration Station of Shangyong Subreserve of Xishuangbanna National Nature Reserve,Mengla,Yunnan 666300,China;Institute of International Rivers and Eco-Security,Yunnan University,Kunming 650000,China)

机构地区：[1]国家林业和草原局西南调查规划院,昆明650000 [2]国家林业和草原局亚洲象研究中心,昆明650000 [3]中国科学院东南亚生物多样性研究中心,缅甸内比都耶津05282 [4]中国科学院西双版纳热带植物园综合保护中心,云南勐腊666303 [5]云南西双版纳国家级自然保护区尚勇管理所,云南勐腊666300 [6]云南大学国际河流与生态安全研究院,昆明650000

出　　处：《西北植物学报》2024年第5期824-831,共8页Acta Botanica Boreali-Occidentalia Sinica

基　　金：澜湄合作中老跨境亚洲象栖息地质量评估项目(102169221100000009022);国家林业和草原局野生动植物保护司亚洲象资源调查监测与评估研究项目(2021-252);国家林业和草原局西南调查规划院“橄榄坝象群”种群监测及潜在栖息地、扩散力研究项目;国家林业和草原局西南调查规划院中国云南亚洲象北移驱动因素研究项目。

摘　　要：【目的】文章报道了云南省勐腊县中老边境地区舟翅桐属(Pterocymbium R.Br.)及其属下热带落叶大乔木———大花舟翅桐(P.macranthum Kosterm.)在中国的分布新记录。此外,还完善了其属和种的描述,评估了境内种群规模和濒危程度。【方法】利用体视显微镜对其标本进行解剖观察,并用数码相机对关键分类特征进行拍摄记录;利用无人机航拍对大花舟翅桐境内种群进行规模快速评估;采用访谈法并结合经验对其IUCN物种受威胁等级进行评估。【结果】大花舟翅桐在中国境内约有1000株,分布区面积约2000 hm^(2),建议将其评为IUCN红色物种名录易危(VU)物种。【结论】舟翅桐属为中国新记录属,属下大花舟翅桐为中国新记录种。该发现将其分布区向北扩展至热带亚洲北缘,有助于深入理解中国与东南亚热带植物区系之间的联系。[Objective]The present study reports a newly recorded giant tropical deciduous tree,Pterocymbium macranthum Kosterm.,which has been spotted in the border regions of Sino-Lao,Mengla County,Yunnan Province,and both the species and genus are new to China.Furthermore,descriptions of the species and genus are amended,and the domestic population size and state of endangerment are evaluated.[Methods]Morphological and anatomical observations of specimens were conducted using a stereomicroscope,and key taxonomic characteristics were recorded with a digital camera.Aided by drones,its domestic population size was assessed,and its IUCN species threat level was evaluated by interviews and our field experiences.[Results]Around 1000 individuals were recognized in an area ca.2000 hm^(2),and it was recommended as an IUCN vulnerable(VU)species.[Conclusion]The genus Pterocymbium R.Br.and its intragenus P.macranthum Kosterm.are new to China.The new discovery in China extends the known geographical range of P.macranthum to the northern edge of the Asian tropics and contributes to the knowledge of the flora both in China and Southeast Asia.

关 键 词：舟翅桐属 锦葵科 生物地理 印缅生物多样性热点地区 跨境生物多样性保护 

分 类 号：Q949[生物学—植物学]