干旱区生态环境知识资源中心(Arid): Grazing intensity and climate factors shape species abundance distribution by influencing different components of plant communities in a desert steppe

Arid

DOI	10.1111/1440-1703.12047
	Grazing intensity and climate factors shape species abundance distribution by influencing different components of plant communities in a desert steppe
	Xu, Cailin 1,2; Wang, Zhongwu 1,2; Li, Zhiguo 1,2; Wang, Ling 3,4; Han, Guodong1,2
通讯作者	Han, Guodong
来源期刊	ECOLOGICAL RESEARCH
ISSN	0912-3814
EISSN	1440-1703
出版年	2019
卷号	34 期号:6 页码:730-742
英文摘要	Species abundance distributions (SADs) have been the focus of many ecological studies. Understanding the causes of SAD patterns is a major stepping stone toward understanding of how ecological communities are organized. While SAD patterns have been well studied in marine environments and forests, knowledge of SADs in response to environmental or human-induced gradients is limited, especially in desert environments. In this study, we used structural equation modeling to analyze the effects of grazing disturbance and climate on plant SADs in a desert steppe of Inner Mongolia, China, aiming to shed light on the assembly of plant communities in this region. We found both grazing disturbance and climate influenced SADs but through different pathways and with different magnitude. Grazing intensity affected SADs by reducing evenness and richness of common species, while increases in annual mean temperature and annual rainfall affected SADs by increasing richness of rare species. Climate had 30% greater effect on community structure than grazing disturbance, highlighting the role of climate in community assembly in desert environments where biological processes are highly constrained by water. We further found geometric series was associated with low annual rainfall and low richness, and log-normal with high annual rainfall, high richness and evenness. Geometric best fit for majority of the cases (60%) regardless of grazing intensity suggesting niche differentiation on the local scale is the principal community assembly process operating in the study region. Environmental filtering and niche differentiation may be concurrently operating to structure plant communities in this region.
英文关键词	climate community assembly desert steppe grazing disturbance niche differentiation
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000492439000001
WOS关键词	SOIL-MOISTURE ; RELATIVE-ABUNDANCE ; STOCKING RATE ; DIVERSITY ; MODELS ; PRECIPITATION ; SPECIFICATION ; TEMPERATURE ; VARIABILITY ; ECOSYSTEMS
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-10-07
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310264
作者单位	1.Inner Mongolia Agr Univ, Minist Educ China, Key Lab Grassland Resources, Coll Grassland Resources & Environm, 29 E Ordos St, Hohhot 010011, Inner Mongolia, Peoples R China; 2.Inner Mongolia Agr Univ, Key Lab Forage Cultivat & Proc, Minist Agr China, Key Lab Grassland Management & Utilizat Inner Mon, 29 E Ordos St, Hohhot 010011, Inner Mongolia, Peoples R China; 3.Northeast Normal Univ, Minist Educ China, Inst Grassland Sci, Changchun, Jilin, Peoples R China; 4.Northeast Normal Univ, Minist Educ China, Key Lab Vegetat Ecol, Changchun, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Xu, Cailin,Wang, Zhongwu,Li, Zhiguo,et al. Grazing intensity and climate factors shape species abundance distribution by influencing different components of plant communities in a desert steppe[J],2019,34(6):730-742.
APA	Xu, Cailin,Wang, Zhongwu,Li, Zhiguo,Wang, Ling,&Han, Guodong.(2019).Grazing intensity and climate factors shape species abundance distribution by influencing different components of plant communities in a desert steppe.ECOLOGICAL RESEARCH,34(6),730-742.
MLA	Xu, Cailin,et al."Grazing intensity and climate factors shape species abundance distribution by influencing different components of plant communities in a desert steppe".ECOLOGICAL RESEARCH 34.6(2019):730-742.