干旱区生态环境知识资源中心(Arid): Nitrogen and water addition alters species diversity and interspecific relationship in a desert grassland

Arid

DOI	10.1016/j.scitotenv.2023.168386
	Nitrogen and water addition alters species diversity and interspecific relationship in a desert grassland
	Du, Zhongyu; Zhang, Xinwen; Liu, Shuxuan; An, Hui
通讯作者	An, H
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2024
卷号	908
英文摘要	Water and nitrogen (N) often affect plant species diversity and interspecific relationship among plant populations in global terrestrial ecosystems. However, the effects of water and N addition on plant diversity and interspecific relationship remain poorly understood. In the study, we designed a three-year field experiment in a desert grassland to assess the effect of increased water (natural +50 %) and N addition (10 g & sdot;N & sdot;m  2 & sdot;a  1) on plant diversity and interspecific relationship. Our results showed that the alpha diversity was significantly changed under increased water (W), N addition (N), and water plus N addition (WN). The species richness was decreased significantly on year scales (10 %-27 %), whereas the Pielou index first increased and then decreased over three years and was significantly affected by the interaction between increased water and N addition. The total and pairwise beta diversity were significantly increased by N addition, the community was mainly caused by the turnover component after N addition, especially in 2019 and 2020 (16.6 % and 9 %, respectively). There were significant negative associations among overall populations and dominant populations under N addition, especially Stipa bungeana and Gypsophila davurica, Gypsophila davurica and Oxytropis acemose, Artemisia dalai-lamae, and Haplophyllum dauricum. Our findings suggested that plant community structure and composition changes may be due to competition for resources among dominant populations and the turnover component under increased water and N addition, which should be considered in ecosystem management.
英文关键词	Plant species diversity Interspecific relationship Increased water N addition Desert grassland
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001113119700001
WOS关键词	PLANT COMMUNITY COMPOSITION ; BETA-DIVERSITY ; COMPETITION ; STABILITY ; DESERTIFICATION ; TRANSFORMATION ; LIMITATION ; RESPONSES ; RICHNESS ; IMPACTS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405435
推荐引用方式 GB/T 7714	Du, Zhongyu,Zhang, Xinwen,Liu, Shuxuan,et al. Nitrogen and water addition alters species diversity and interspecific relationship in a desert grassland[J],2024,908.
APA	Du, Zhongyu,Zhang, Xinwen,Liu, Shuxuan,&An, Hui.(2024).Nitrogen and water addition alters species diversity and interspecific relationship in a desert grassland.SCIENCE OF THE TOTAL ENVIRONMENT,908.
MLA	Du, Zhongyu,et al."Nitrogen and water addition alters species diversity and interspecific relationship in a desert grassland".SCIENCE OF THE TOTAL ENVIRONMENT 908(2024).