气候变化领域集成服务门户(CCPortal): Shrub Communities and Environmental Variables Responsible for Species Distribution Patterns in an Alpine Zone of the Qilian Mountains, Northwest China

CCPortal

DOI	10.1007/s11629-014-3126-x
	Shrub Communities and Environmental Variables Responsible for Species Distribution Patterns in an Alpine Zone of the Qilian Mountains, Northwest China
	Huo Hong; Feng Qi; Su Yong-hong
发表日期	2015
ISSN	1672-6316
EISSN	1993-0321
卷号	12 期号:1
英文摘要	Understanding the factors that drive variation in species distribution is a central theme of ecological research. Although several studies focused on alpine vegetation, few efforts have been made to identify the environmental factors that are responsible for the variations in species composition and richness of alpine shrublands using numerical methods. In the present study, we investigated vegetation and associated environmental variables from 45 sample plots in the middle Qilian Mountains of the northwestern China to classify different community types and to elucidate the species-environment relationships. We also estimated the relative contributions of topography and site conditions to spatial distribution patterns of the shrub communities using the variation partitioning. The results showed that four shrub community types were identified and striking differences in floristic composition were found among them. Species composition greatly depended on elevation, slope, shrub cover, soil pH and organic carbon. The important determinants of species richness were soil bulk density and slope. No significant differences in species richness were detected among the community types. Topography and site conditions had almost equal effects on compositional variation. Nonetheless, a large amount of the variation in species composition remained unexplained.
关键词	Alpine shrublands Floristic composition Cluster analysis Canonical Correspondence Analysis (CCA)Variation partitioning Species composition Species richness
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	JOURNAL OF MOUNTAIN SCIENCE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111821
作者单位	Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Huo Hong,Feng Qi,Su Yong-hong. Shrub Communities and Environmental Variables Responsible for Species Distribution Patterns in an Alpine Zone of the Qilian Mountains, Northwest China[J]. 中国科学院西北生态环境资源研究院,2015,12(1).
APA	Huo Hong,Feng Qi,&Su Yong-hong.(2015).Shrub Communities and Environmental Variables Responsible for Species Distribution Patterns in an Alpine Zone of the Qilian Mountains, Northwest China.JOURNAL OF MOUNTAIN SCIENCE,12(1).
MLA	Huo Hong,et al."Shrub Communities and Environmental Variables Responsible for Species Distribution Patterns in an Alpine Zone of the Qilian Mountains, Northwest China".JOURNAL OF MOUNTAIN SCIENCE 12.1(2015).