Phylogenetic regionalization of the Pan-Himalayan vascular flora  

作　　者：Yun Liu Saddam Saqib Limin Lu Yangjun Lai Haihua Hu Danxiao Peng Wajid Zaman Lina Zhao Bing Liu Qiang Wang Anming Lu Deyuan Hong Jianfei Ye Zhiduan Chen 

机构地区：[1]State Key Laboratory of Plant Diversity and Specialty Crops and Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China [2]China National Botanical Garden,Beijing 100093,China [3]College of Life Sciences,Capital Normal University,Beijing 100048,China [4]State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems,College of Ecology,Lanzhou University,Lanzhou 730000,China [5]Department of Life Sciences,Yeungnam University,Gyeongsan 38541,Gyeongbuk,Korea [6]Sino-Africa Joint Research Center,Chinese Academy of Sciences,Wuhan 430074,China [7]State Key Laboratory of Biocontrol,School of Ecology,Shenzhen Campus,Sun Yat-sen University,Shenzhen 518107,China

出　　处：《Journal of Systematics and Evolution》2025年第1期12-24,共13页植物分类学报(英文版)

基　　金：supported by the National Key Research Development Program of China(2023YFF0805800 and 2022YFF0802300);National Natural Science Foundation of China(NSFC31590822 and 32270233);the Strategic Priority Research Program of CAS(XDB31000000 and XDA19050103);Shenzhen Science and Technology Program(202206193000001,20220816162653003);the Young Elite Scientist Sponsorship Program by CAST(2018QNRC001).

摘　　要：Pan-Himalaya,including Himalaya and its neighboring areas,hosts a rich and unique flora that is crucial for understanding the evolutionary history of mountainous biodiversity.Phylogenetic regionalization can provide novel insights into biodiversity distribution patterns and their formation mechanisms.In this study,based on comprehensive species distribution data and a species-level phylogenetic tree,we propose a phylogenetic regionalization scheme of the Pan-Himalayan vascular flora comprising 15 zones,which can be grouped into five floristic subregions and three floristic regions(i.e.,the West Himalayan[WH],the Southeast Himalayan[SEH],and the Northeast Himalayan[NEH]regions).Our results reveal that the SEH and NEH regions are closely clustered,which are then grouped with the WH region.The floras of these three regions exhibit distinct evolutionary histories and phylogenetic structures.The WH region presents a phylogenetically clustered flora with Euro-Mediterranean affinities and the highest evolutionary uniqueness.The NEH region has the highest species richness and phylogenetic diversity,with most of its areas,especially at higher elevations,displaying phylogenetic clustering.In contrast,the SEH region exhibits a phylogenetically overdispersed flora,characterized by harboring species-rich families with tropical,temperate,and alpine distributions,as well as relict plant lineages.This study provides valuable insights into the evolutionary history of the Pan-Himalayan flora and informs the development of effective conservation strategies.

关 键 词：beta diversity bioregionalization evolutionary history Pan-Himalaya phylogenetic diversity phylogenetic structure 

分 类 号：Q948[生物学—植物学]