干旱区生态环境知识资源中心(Arid): Shift in microbial communities mediated by vegetation-soil characteristics following subshrub encroachment in a semi-arid grassland

Arid

DOI	10.1016/j.ecolind.2022.108768
	Shift in microbial communities mediated by vegetation-soil characteristics following subshrub encroachment in a semi-arid grassland
	Guo, Qian; Wen, Zhongming; Ghanizadeh, Hossein; Zheng, Cheng; Fan, Yongming; Yang, Xue; Yan, Xinhui; Li, Wei
通讯作者	Wen, ZM ; Li, W
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2022
卷号	137
英文摘要	Subshrub encroachment is a frequently occurring phenomenon in arid and semi-arid area, altering the plant community structure and function. However, the effects of the encroachment process on soil bacterial communities are poorly understood on the Loess Plateau, China. In this study, we assessed the changes in soil properties and vegetation characteristics, and their association with alterations in soil bacterial communities in grasslands subjected to different subshrub (Artemisia sacrorum Ledeb.) encroachment intensities (no subshrub encroachment, light subshrub encroachment, moderate subshrub encroachment, and heavy subshrub encroachment). Our results indicated that heavy subshrub encroachment significantly increased plant aboveground biomass and bacterial diversity, but adversely affected plant diversity. Heavy and moderate subshrub encroachment significantly increased soil organic carbon, total nitrogen and water content. Subshrub encroachment at all intensities increased community weighted mean trait values of leaf carbon content, leaf nitrogen content, leaf phosphorus content, specific leaf area, but decreased leaf dry matter content and community functional dispersion. In addition, subshrub encroachment altered the composition of plant and bacterial communities. The partial least squares structural equation model indicated that subshrub encroachment indirectly influenced bacterial communities by affecting vegetation characteristics and soil properties. The determinants of bacterial diversity were vegetation structures (community weighted mean trait values of specific leaf area and plant community composition) and soil properties (organic carbon content, alkaline hydrolysis nitrogen, total phosphorus, available phosphorus, and soil water content). The composition of bacterial community was primarily regulated by plant aboveground biomass and soil properties. Overall, the results of this study improved our understanding of the impact of subshrub encroachment on soil bacteria community on Loess Plateau, and the processes underlying the alterations in the soil bacterial community by subshrub encroachment.
英文关键词	Bacterial communities Community weighted mean traits value Nitrogen Phosphorus Subshrub encroachment
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000779179900003
WOS关键词	TERM GRAZING EXCLUSION ; SHRUB ENCROACHMENT ; BACTERIAL COMMUNITIES ; PLANT COMMUNITY ; LOESS PLATEAU ; NITROGEN ; DIVERSITY ; CARBON ; LITTER ; DECOMPOSITION
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392309
推荐引用方式 GB/T 7714	Guo, Qian,Wen, Zhongming,Ghanizadeh, Hossein,et al. Shift in microbial communities mediated by vegetation-soil characteristics following subshrub encroachment in a semi-arid grassland[J],2022,137.
APA	Guo, Qian.,Wen, Zhongming.,Ghanizadeh, Hossein.,Zheng, Cheng.,Fan, Yongming.,...&Li, Wei.(2022).Shift in microbial communities mediated by vegetation-soil characteristics following subshrub encroachment in a semi-arid grassland.ECOLOGICAL INDICATORS,137.
MLA	Guo, Qian,et al."Shift in microbial communities mediated by vegetation-soil characteristics following subshrub encroachment in a semi-arid grassland".ECOLOGICAL INDICATORS 137(2022).