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羌塘高原野生种子植物区系及物种多样性研究

Flora and species diversity of wild seed plants in Qiangtang Plateau
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摘要 文中基于野外调查、标本采集、馆藏标本数据查询和文献资料收集,补充了羌塘高原部分地区标本采集的空白,汇总并整理出羌塘高原野生种子植物名录,并与其周边18个植物区系进行聚类和主成分分析,对该区域组成、性质、特征及演化历史进行系统性分析。结果表明:1)羌塘高原共有种子植物44科158属370种,植物区系较为贫乏。2)科和属的分布区类型都以温带成分为主导地位,属的分布区类型以北温带分布、温带亚洲分布、地中海分布以及中亚分布为主,体现出该区系与古地中海植物区系的密切联系。3)羌塘高原成为一些与该地区起源有密切联系的代表类群的摇篮,如沙棘属(Hippophae)、齿缀草属(Odontostemma)、扁芒菊属(Allardia)、双脊荠属(Dilophia)、高原芥属(Christolea)和丛菔属(Solms-Laubachia)等。4)在属级植物地理成分上,羌塘高原植物区系与阿尔金山植物区系相似度最高。 To analyze and discuss the composition,elements,and characters of the flora in Qiangtang Plateau,and to provide data support and reference for the study and conservation of biodiversity in this region.Based on the field investigation,specimen collection,and literature review,the list of wild seed plants in Qiangtang Plateau was summarized and compiled.Floras in Qiangtang Plateau and surrounding 18 regions were analyzed by cluster and principal component analysis,and the composition,properties,characteristics,and evolutionary history were also analyzed systematically.Conclusions were drawn as follows:1)There are 370 species of seed plants found in Qiangtang Plateau belonging to 158 genera and 44 families.The species in the flora are relatively unabundant.2)The distribution area types of families and genera are dominated by temperate components,and the distribution area types of genera are dominated by the distribution in the North Temperate Zone,Temperate Asia,Mediterranean Sea,and Central Asia,reflecting the close connection with the Paleo-Mediterranean flora.3)The Qiangtang Plateau has become the cradle of some representative taxa(Hippophae,Odontostemma,Allardia,Dilophia,Christolea,and Solms-Laubachia),which their origins are closely linked to the region.4)In terms of phytogeographic compositionat the genus level,the flora in Qiangtang Plateau has the highest similarity to the flora in Altun Mountains.
作者 李孝平 牛玉 张发起 LI Xiaoping;NIU Yu;ZHANG Faqi(Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810008;College of Life Sciences,University of Chinese Academy of Sciences,Beijing 100039,China)
出处 《干旱区资源与环境》 CSCD 北大核心 2024年第4期129-139,共11页 Journal of Arid Land Resources and Environment
基金 第二次青藏高原综合科学考察研究(20190ZKK05020102) 中国科学院战略生物资源计划能力建设项目(KFJ-BRP-017-101)资助。
关键词 羌塘高原 植物区系 分布区类型 聚类分析 主成分分析 Qiangtang Plateau flora areal-type cluster analysis principal component analysis
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