干旱区生态环境知识资源中心(Arid): Different ecological processes determined the alpha and beta components of taxonomic, functional, and phylogenetic diversity for plant communities in dryland regions of Northwest China

Arid

DOI	10.7717/peerj.6220
	Different ecological processes determined the alpha and beta components of taxonomic, functional, and phylogenetic diversity for plant communities in dryland regions of Northwest China
	Wang, Jianming 1; Chen, Chen 1; Li, Jingwen 1; Feng, Yiming 2; Lu, Qi2
通讯作者	Li, Jingwen
来源期刊	PEERJ
ISSN	2167-8359
出版年	2019
卷号	6
英文摘要	Drylands account for more than 30% of China's terrestrial area, while the ecological drivers of taxonomic (TD), functional (FD) and phylogenetic (PD) diversity in dryland regions have not been explored simultaneously. Therefore, we selected 36 plots of desert and 32 plots of grassland (10 x 10 m) from a typical dryland region of northwest China. We calculated the alpha and beta components of TD, FD and PD for 68 dryland plant communities using Rao quadratic entropy index, which included 233 plant species. Redundancy analyses and variation partitioning analyses were used to explore the relative influence of environmental and spatial factors on the above three facets of diversity, at the alpha and beta scales. We found that soil, climate, topography and spatial structures (principal coordinates of neighbor matrices) were significantly correlated with TD, FD and PD at both alpha and beta scales, implying that these diversity patterns are shaped by contemporary environment and spatial processes together. However, we also found that alpha diversity was predominantly regulated by spatial structure, whereas beta diversity was largely determined by environmental variables. Among environmental factors, TD was most strongly correlated with climatic factors at the alpha scale, while with soil factors at the beta scale. FD was only significantly correlated with soil factors at the alpha scale, but with altitude, soil and climatic factors at the beta scale. In contrast, PD was more strongly correlated with altitude at the alpha scale, but with soil factors at the beta scale. Environment and space explained a smaller portion of variance in PD than in TD and FD. These results provide robust evidence that the ecological drivers of biodiversity differ among different scales and facets of diversity. Future research that focuses on the comparisons among TD, FD and PD would likely provide new insights into elucidating the underlying community assembly.
英文关键词	Drylands Facets of diversity Ecological scale Biogeography of deserts Alpha diversity Beta diversity
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Published, gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000455373100004
WOS关键词	GLOBAL PATTERNS ; TEMPERATE ; TRAITS ; NICHE ; SOIL ; DISSIMILARITY ; MAINTENANCE ; ENVIRONMENT ; MECHANISMS ; NEUTRALITY
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217891
作者单位	1.Beijing Forestry Univ, Coll Forestry, Beijing, Peoples R China; 2.Chinese Acad Forestry, Inst Desertificat Studies, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jianming,Chen, Chen,Li, Jingwen,et al. Different ecological processes determined the alpha and beta components of taxonomic, functional, and phylogenetic diversity for plant communities in dryland regions of Northwest China[J]. 北京林业大学,2019,6.
APA	Wang, Jianming,Chen, Chen,Li, Jingwen,Feng, Yiming,&Lu, Qi.(2019).Different ecological processes determined the alpha and beta components of taxonomic, functional, and phylogenetic diversity for plant communities in dryland regions of Northwest China.PEERJ,6.
MLA	Wang, Jianming,et al."Different ecological processes determined the alpha and beta components of taxonomic, functional, and phylogenetic diversity for plant communities in dryland regions of Northwest China".PEERJ 6(2019).