干旱区生态环境知识资源中心(Arid): Relationship between species distribution of sandy alpine grasslands and microtopography in the source regions of Yangtze river

Arid

DOI	10.3389/fenvs.2022.934483
	Relationship between species distribution of sandy alpine grasslands and microtopography in the source regions of Yangtze river
	Zhao, Peng; Xu, Xianying; Tang, Jinnian; Jiang, Shengxiu
通讯作者	Xu, XY
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2022
卷号	10
英文摘要	Dynamic of sandy alpine grasslands affect the progress and reversal of desertification in source regions of the Yangtse Rivers. To understand geomorphic driving mechanism of species distribution pattern, we examined the species compositions and delineated the most important landform factors influencing species distribution of sandy alpine grassland using two-way indicator species analysis (TWINSPAN), detrended correspondence analysis (DCA), and canonical correspondence analysis (CCA). Field survey were conducted in summer of 2016 using stratified random methods in hilly sloped lands, floodplains, foothills, and valley land of study region. In total, 29 plant species grouped into 27 genera and 16 families were identified. Leymus secalinus, Elymus dahuricus and Corispermum declinatum are the dominant species of sandy alpine grassland communities in different microtopography. The present vegetation reflected xerosere character, which indicated that desertification of alpine grassland is in progress. Standard frequency distribution of species varied with different microtopography, the proportion of dominant species was generally lower than rare species, and the vegetation community was in a highly successional stage. Seven groups were distinguished through TWINSPAN, distribution of which in the DCA ordination graph showed species with similar ecotype is clustered together. The results of the CCA ordination revealed that slope and aspect are the dominant factors among microtopography determining the species distribution of sandy alpine grassland.
英文关键词	species distribution TWINSPAN DCA CCA microtopography sandy alpine grassland
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000885061100001
WOS关键词	QINGHAI-TIBETAN PLATEAU ; PLANT-COMMUNITIES ; WIND EROSION ; DUNE ; DESERTIFICATION ; COVER ; DEGRADATION ; DYNAMICS ; LAND
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392743
推荐引用方式 GB/T 7714	Zhao, Peng,Xu, Xianying,Tang, Jinnian,et al. Relationship between species distribution of sandy alpine grasslands and microtopography in the source regions of Yangtze river[J],2022,10.
APA	Zhao, Peng,Xu, Xianying,Tang, Jinnian,&Jiang, Shengxiu.(2022).Relationship between species distribution of sandy alpine grasslands and microtopography in the source regions of Yangtze river.FRONTIERS IN ENVIRONMENTAL SCIENCE,10.
MLA	Zhao, Peng,et al."Relationship between species distribution of sandy alpine grasslands and microtopography in the source regions of Yangtze river".FRONTIERS IN ENVIRONMENTAL SCIENCE 10(2022).