干旱区生态环境知识资源中心(Arid): Spatial and environmental determinants of plant species diversity in a temperate desert

Arid

	Spatial and environmental determinants of plant species diversity in a temperate desert
	Zhang Rong; Liu Tong; Zhang Jinlong; Sun Qinming
来源期刊	Journal of Plant Ecology
ISSN	1752-9921
出版年	2016
卷号	9 期号:2 页码:124-131
英文摘要	Aims Deserts are one of the ecosystems most sensitive to global climate change. However, there are few studies examining how changing abiotic and biotic factors under climate change will affect plant species diversity in the temperate deserts of Asia. This study aimed to:(i) characterize species distributions and diversity patterns in an Asian temperate desert; and(ii) to quantify the effects of spatial and environment variables on plant species diversity. Methods We surveyed 61 sites to examine the relationship between plant species diversity and several spatial/environmental variables in the Gurbantunggut Desert. Spatial and environmental variables were used to predict plant species diversity in separate multiple regression and ordination models. Variation in species responses to spatial and environmental conditions was partitioned by combining these variables in a redundancy analysis(RDA) and by creating multivariate regression trees(MRT). Important Findings We found 92 plant species across the 61 sites. Elevation and geographic location were the dominant environmental factors underlying variation in site species richness. A RDA indicated that 93% of the variance in the species-environment relationships was explained by altitude, latitude, longitude, precipitation and slope position. Precipitation and topographic heterogeneity, through their effects on water availability, were more important than soil chemistry in determining the distribution of species. MRT analyses categorized communities into four groups based on latitude, soil pH and elevation, explaining 42.3% of the standardized species variance. Soil pH strongly influenced community composition within homogeneous geographic areas. Our findings suggest that precipitation and topographic heterogeneity, rather than edaphic heterogeneity, are more closely correlated to the number of species and their distributions in the temperate desert.
英文关键词	Gurbantunggut Desert ephemerals redundancy analysis species richness soil pH
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:5719508
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335652
作者单位	Zhang Rong, College of Life Sciences, Shihezi University, Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Shihezi, Xinjiang 832003, China.; Liu Tong, College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China.; Sun Qinming, College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China.; Zhang Jinlong, Flora Conservation Department, Kadoorie Farm and Botanic Garden, Hong Kong.
推荐引用方式 GB/T 7714	Zhang Rong,Liu Tong,Zhang Jinlong,et al. Spatial and environmental determinants of plant species diversity in a temperate desert[J],2016,9(2):124-131.
APA	Zhang Rong,Liu Tong,Zhang Jinlong,&Sun Qinming.(2016).Spatial and environmental determinants of plant species diversity in a temperate desert.Journal of Plant Ecology,9(2),124-131.
MLA	Zhang Rong,et al."Spatial and environmental determinants of plant species diversity in a temperate desert".Journal of Plant Ecology 9.2(2016):124-131.