NDLI: Shrub communities and environmental variables responsible for species distribution patterns in an alpine zone of the Qilian Mountains, northwest China

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Shrub communities and environmental variables responsible for species distribution patterns in an alpine zone of the Qilian Mountains, northwest China

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Journal of Mountain Science : Volume 11

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Shrub communities and environmental variables responsible for species distribution patterns in an alpine zone of the Qilian Mountains, northwest China

Content Provider	Springer Nature Link
Author	Huo, Hong Feng, Qi Su, Yong hong
Copyright Year	2015
Abstract	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.
Starting Page	166
Ending Page	176
Page Count	11
File Format	PDF
ISSN	16726316
Journal	Journal of Mountain Science
Volume Number	12
Issue Number	1
e-ISSN	19930321
Language	English
Publisher	Science Press
Publisher Date	2015-01-31
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Alpine shrublands Floristic composition Cluster analysis Canonical Correspondence Analysis (CCA) Variation partitioning Species composition Species richness Earth Sciences Geography (general) Environment Ecology
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Geography, Planning and Development Geology Global and Planetary Change Nature and Landscape Conservation

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