The impacts of nitrogen deposition on community N:P stoichiometry do not depend on phosphorus availability in a temperate meadow steppe

doi:10.1016/j.envpol.2018.06.088

	The impacts of nitrogen deposition on community N:P stoichiometry do not depend on phosphorus availability in a temperate meadow steppe
	Wang, Hong-Yi 1,2,3; Wang, Zheng-Wen 3; Ding, Rui 2; Hou, Shuang-Li 1,3; Yang, Guo-Jiao 1,3; Lu, Xiao-Tao 3; Han, Xing-Guo 1,4
刊名	ENVIRONMENTAL POLLUTION
	2018-11-01
卷号	242 页码:82-89
关键词	Aboveground biomass Community composition Ecological stoichiometry Hulunber grassland Intraspecific variation Nitrogen deposition Phosphorus addition Plant functional traits
ISSN号	0269-7491
DOI	10.1016/j.envpol.2018.06.088
英文摘要	Nitrogen (N) enrichment has great consequences on several fundamental ecological processes through its impacts on plant nutrition traits (i.e. nutrient concentration and stoichiometric ratios); however, the extent to which the effects of N enrichment depend on phosphorus (P) availability are less well understood. While there is mounting evidence for the species-specific responses of plant nutrition traits to nutrient enrichment, we know little about the changes at the community-level. Here, we measured community-level biomass weighted (CWM) and non-weighted (CM) plant N and P concentrations and N:P ratio in a temperate meadow steppe after four years factorial N and P addition, with biomass and nutrition traits of each species in each plot being recorded. Nitrogen addition significantly increased community-level N concentration, decreased P concentration, and enhanced community N:P ratio. Phosphorus addition had no impacts on community-level N concentration, significantly increased P concentration, and reduced community N:P ratio. The impacts of N addition on community nutrition traits were not dependent on P addition and the community-level nutrition trait responses to N and P additions were primarily driven by intraspecific trait variation (ITV) rather than by species turnover. Community-level nutrition traits in the temperate meadow steppe were sensitive to the projected N and P enrichment. While nutrient enrichment had substantially changed community composition, its impacts on community nutrition traits were driven by ITV. Nitrogen deposition would result in imbalance of N and P in plant community, as indicated by the substantial increase in community-level N:P, which was not affected by increased P availability. (C) 2018 Elsevier Ltd. All rights reserved.
资助项目	National Basic Research Program of China[2016YFC0500602] ; National Basic Research Program of China[2015CB150802] ; National Natural Science Foundation of China[31570530] ; National Natural Science Foundation of China[31770503] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB15010404] ; Youth Innovation Promotion Association CAS[2014174]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000446150300009
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/123349]
专题	中国科学院沈阳应用生态研究所
通讯作者	Lu, Xiao-Tao
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Heilongjiang Bayi Agr Univ, Daqing 163319, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110016, Peoples R China 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hong-Yi,Wang, Zheng-Wen,Ding, Rui,et al. The impacts of nitrogen deposition on community N:P stoichiometry do not depend on phosphorus availability in a temperate meadow steppe[J]. ENVIRONMENTAL POLLUTION,2018,242:82-89.
APA	Wang, Hong-Yi.,Wang, Zheng-Wen.,Ding, Rui.,Hou, Shuang-Li.,Yang, Guo-Jiao.,...&Han, Xing-Guo.(2018).The impacts of nitrogen deposition on community N:P stoichiometry do not depend on phosphorus availability in a temperate meadow steppe.ENVIRONMENTAL POLLUTION,242,82-89.
MLA	Wang, Hong-Yi,et al."The impacts of nitrogen deposition on community N:P stoichiometry do not depend on phosphorus availability in a temperate meadow steppe".ENVIRONMENTAL POLLUTION 242(2018):82-89.