干旱区生态环境知识资源中心(Arid): N enrichment, increased precipitation, and the effect of shrubs collectively shape the plant community in a desert ecosystem in northern China

Arid

DOI	10.1016/j.scitotenv.2019.135379
	N enrichment, increased precipitation, and the effect of shrubs collectively shape the plant community in a desert ecosystem in northern China
	Bai, Yuxuan 1; She, Weiwei 1; Zhang, Yuqing 1,3; Qiao, Yangui 1; Fu, Jie 1; Qin, Shugao 1,2
通讯作者	Zhang, Yuqing
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	716
英文摘要	Understanding the responses of biological communities to global climate change is pivotal to accurately forecasting future dynamics and developing effective strategies for the adaptive ecological management of desert ecosystems. Although direct demographic responses of plant species to climatic factors have been widely acknowledged, they are also regulated by interspecific interactions (i.e., the effects of shrubs on herbaceous plants). The magnitude and direction of regulation of such interspecific interactions remain unclear. To address this knowledge gap, a full factorial field experiment simulating three levels of N enrichment (ambient, 10 kg N ha(-1) yr(-)(1), and 60 kg N ha(-1) yr(-1)) and three levels of precipitation (ambient, 20% increase, and 40% increase) were conducted in the Mu Us Desert, northern China. N enrichment and increased precipitation significantly increased herbaceous productivity by improving the soil water content and nutrient availability (e.g., soil DIN:SAP) when shrubs were not present. Taller species responded to N enrichment, whereas those with a greater specific leaf area responded to increased precipitation. When shrubs were present, they acted as a 'buffer islands' that moderated the responses of herbaceous species to N enrichment and increased precipitation by weakening the effect of the improved soil water status. The magnitude of the effect of shrubs on herbaceous biomass and richness was comparable to that of N enrichment and increased precipitation. Our results highlight the importance and complexity of both large-scale environmental changes and small-scale interspecific interactions in structuring plant communities in desert ecosystems. Moreover, abiotic environmental factors and biotic interactions should be integrated in efforts to predict the responses of plant communities to future global change in desert ecosystems. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Artemisia ordosica Buffer island Desert ecosystem Increased precipitation Interspecific interactions Mu Us Desert N enrichment
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000519987300104
WOS关键词	SPECIES INTERACTIONS ; NITROGEN ADDITION ; CLIMATE-CHANGE ; WATER ; SOIL ; FACILITATION ; GRASSLAND ; RESPONSES ; MANIPULATIONS ; FERTILIZATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
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/2XILL650/315539
作者单位	1.Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China; 2.Beijing Forestry Univ, Minist Educ, Engn Res Ctr Forestry Ecol Engn, Beijing, Peoples R China; 3.Beijing Forestry Univ, State Forestry Adm Soil & Water Conservat, Key Lab, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Bai, Yuxuan,She, Weiwei,Zhang, Yuqing,et al. N enrichment, increased precipitation, and the effect of shrubs collectively shape the plant community in a desert ecosystem in northern China[J]. 北京林业大学,2020,716.
APA	Bai, Yuxuan,She, Weiwei,Zhang, Yuqing,Qiao, Yangui,Fu, Jie,&Qin, Shugao.(2020).N enrichment, increased precipitation, and the effect of shrubs collectively shape the plant community in a desert ecosystem in northern China.SCIENCE OF THE TOTAL ENVIRONMENT,716.
MLA	Bai, Yuxuan,et al."N enrichment, increased precipitation, and the effect of shrubs collectively shape the plant community in a desert ecosystem in northern China".SCIENCE OF THE TOTAL ENVIRONMENT 716(2020).