Impact of extra nitrogen on ecological stoichiometry of alpine grasslands on Tibetan Plateau: meta-analysis

doi:10.3161/15052249PJE2018.66.4.001

	Impact of extra nitrogen on ecological stoichiometry of alpine grasslands on Tibetan Plateau: meta-analysis
	Zhang, Hao Rui 1,2; Sun, Wei 1; Li, Shao Wei 1; Han, Fu Song 1,2; Yu, Cheng Qun 1; Zhang, Xian Zhou 1; Wang, Jing Sheng 1; He, Yong Tao 1; Zhong, Zhi Ming 1
刊名	POLISH JOURNAL OF ECOLOGY
	2018
卷号	66 期号:4 页码:315-324
关键词	C:N ratio C:P ratio N:P ratio eutrophication nitrogen deposition alpine region
ISSN号	1505-2249
DOI	10.3161/15052249PJE2018.66.4.001
通讯作者	Zhang, Xian Zhou(zhangxz@igsnrr.ac.cn) ; Wang, Jing Sheng(wangjsh@igsnrr.ac.cn)
英文摘要	The general impact of extra nitrogen on ecological stoichiometry was examined in alpine grasslands on the Tibetan Plateau. Extra nitrogen increased the ratio of nitrogen to phosphorus (N:P ratio) in leaves and aboveground parts of plants by 43.4% and 32.7%, respectively. In contrast, extra nitrogen reduced the ratio of carbon to nitrogen (C:N ratio) in leaves by 30.6%. Extra nitrogen decreased soil C:N ratio by 9.1% in alpine meadows, but increased soil C:N ratio by 3.4% in alpine steppes. Extra urea had a stronger positive impact on aboveground vegetation N:P ratio than did extra ammonium nitrate. Extra urea rather than ammonium nitrate decreased aboveground vegetation C:N ratio and soil C:N ratio. The impact of extra nitrogen on aboveground vegetation N:P ratio was positively correlated with latitude, mean annual temperature and precipitation, nitrogen application rate and accumulated amount, but negatively correlated with elevation, duration and aboveground vegetation N:P ratio of the control plots. The impact of extra nitrogen on leaves N:P ratio was positively correlated with nitrogen application rate and accumulated amount. The impact of extra nitrogen on leaves C:N ratio was positively correlated with latitude, but negatively correlated with mean annual temperature and precipitation, nitrogen application rate, accumulated amount, duration and leaves C:N ratio of the control plots. Therefore, nitrogen enrichment caused by human activities will most likely alter element balance and alpine plants from nitrogen limitation to phosphorus limitation. This effect may weaken with time, and increase with climatic warming, increased precipitation and nitrogen input rate.
资助项目	National Key Research Projects of China[2016YFC0502006] ; National Key Research Projects of China[2017YFA0604801] ; National Natural Science Foundation of China[31600432] ; National Natural Science Foundation of China[41571042] ; Tibet Science and Technology Major Projects of Pratacultural Industry
WOS关键词	GHG FLUX ; MEADOW ; FERTILIZATION ; DEPOSITION ; CARBON ; CO2
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	POLISH ACAD SCIENCES INST ECOLOGY
WOS记录号	WOS:000459824900001
资助机构	National Key Research Projects of China ; National Natural Science Foundation of China ; Tibet Science and Technology Major Projects of Pratacultural Industry
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/49489]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhang, Xian Zhou; Wang, Jing Sheng
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Lhasa Plateau Ecosyst Res Stn, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hao Rui,Sun, Wei,Li, Shao Wei,et al. Impact of extra nitrogen on ecological stoichiometry of alpine grasslands on Tibetan Plateau: meta-analysis[J]. POLISH JOURNAL OF ECOLOGY,2018,66(4):315-324.
APA	Zhang, Hao Rui.,Sun, Wei.,Li, Shao Wei.,Han, Fu Song.,Yu, Cheng Qun.,...&Zhong, Zhi Ming.(2018).Impact of extra nitrogen on ecological stoichiometry of alpine grasslands on Tibetan Plateau: meta-analysis.POLISH JOURNAL OF ECOLOGY,66(4),315-324.
MLA	Zhang, Hao Rui,et al."Impact of extra nitrogen on ecological stoichiometry of alpine grasslands on Tibetan Plateau: meta-analysis".POLISH JOURNAL OF ECOLOGY 66.4(2018):315-324.