干旱区生态环境知识资源中心(Arid): Nitrogen deposition magnifies the sensitivity of desert steppe plant communities to large changes in precipitation

Arid

DOI	10.1111/1365-2745.13264
	Nitrogen deposition magnifies the sensitivity of desert steppe plant communities to large changes in precipitation
	Ma, Quanhui 1,2; Liu, Xiaodi 1,2; Li, Yibo 1,2; Li, Lang 1,2; Yu, Hongying 1,2; Qi, Miao 1,2; Zhou, Guangsheng 1,3; Xu, Zhenzhu 1
通讯作者	Zhou, Guangsheng ; Xu, Zhenzhu
来源期刊	JOURNAL OF ECOLOGY
ISSN	0022-0477
EISSN	1365-2745
出版年	2020
卷号	108 期号:2 页码:598-610
英文摘要	Precipitation alteration and nitrogen (N) deposition caused by anthropogenic activities could profoundly affect the structure and functioning of plant communities in arid ecosystems. However, the plant community impacts conferred by large temporal changes in precipitation, especially with a concurrent increase in N deposition, remain unclear. To address this uncertainty, from 2016 to 2017, an in situ field experiment was conducted to examine the effects of five precipitation levels, two N levels and their interaction on the plant community function and composition in a desert steppe in northern China. Above-ground net primary production (ANPP) and plant community-weighted mean (CWM) height significantly increased with increasing precipitation, and both were well fitted with a positive linear model, but with a higher slope under N addition. The ANPP increase was primarily driven by the increase in Artemisia capillaris, a companion forb sensitive to precipitation variation. The plant community composition shifted with precipitation enhancement-from a community dominated by Stipa tianschanica, a perennial grass, to a community dominated by Artemisia capillaris. Synthesis. The findings imply that the ecosystem sensitivity to future changes in precipitation variability will be mediated by two potential mechanisms: concurrent N deposition and plant community-level change. It is suggested that we should consider the vegetation compositional shift and multiple resource colimitation in assessing the sensitivity of terrestrial ecosystems to climate change.
英文关键词	above-ground net primary production arid ecosystems climate change nitrogen addition plant community plant functional groups rainfall variation
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000484845000001
WOS关键词	ECOSYSTEM CARBON FLUXES ; GRASSLAND ECOSYSTEM ; WATER AVAILABILITY ; USE EFFICIENCY ; ELEVATED CO2 ; RESPONSES ; DYNAMICS ; LIMITATION ; STABILITY ; PRODUCTIVITY
WOS类目	Plant Sciences ; Ecology
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
来源机构	中国科学院植物研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216938
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Chinese Acad Meteorol Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Ma, Quanhui,Liu, Xiaodi,Li, Yibo,et al. Nitrogen deposition magnifies the sensitivity of desert steppe plant communities to large changes in precipitation[J]. 中国科学院植物研究所,2020,108(2):598-610.
APA	Ma, Quanhui.,Liu, Xiaodi.,Li, Yibo.,Li, Lang.,Yu, Hongying.,...&Xu, Zhenzhu.(2020).Nitrogen deposition magnifies the sensitivity of desert steppe plant communities to large changes in precipitation.JOURNAL OF ECOLOGY,108(2),598-610.
MLA	Ma, Quanhui,et al."Nitrogen deposition magnifies the sensitivity of desert steppe plant communities to large changes in precipitation".JOURNAL OF ECOLOGY 108.2(2020):598-610.