Exogenous N addition enhances the responses of gross primary productivity to individual precipitation events in a temperate grassland

doi:10.1038/srep26901

	Exogenous N addition enhances the responses of gross primary productivity to individual precipitation events in a temperate grassland
	Guo, Qun ; Hu, Zhong-min ; Li, Sheng-gong ; Yu, Gui-rui ; Sun, Xiao-min ; Li, Ling-hao; Liang, Nai-shen ; Bai, Wen-ming
	2016
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	6
摘要	Predicted future shifts in the magnitude and frequency (larger but fewer) of precipitation events and enhanced nitrogen (N) deposition may interact to affect grassland productivity, but the effects of N enrichment on the productivity response to individual precipitation events remain unclear. In this study, we quantified the effects of N addition on the response patterns of gross primary productivity (GPP) to individual precipitation events of different sizes (P-size) in a temperate grassland in China. The results showed that N enrichment significantly increased the time-integrated amount of GPP in response to an individual precipitation event (GPP(total)), and the N-induced stimulation of GPP increased with increasing Psize. N enrichment rarely affected the duration of the GPP response, but it significantly stimulated the maximum absolute GPP response. Higher foliar N content might play an important role in the N-induced stimulation of GPP. GPPtotal in both the N-addition and control treatments increased linearly with Psize with similar Psize intercepts (approximately 5 mm, indicating a similar lower Psize threshold to stimulate the GPP response) but had a steeper slope under N addition. Our work indicates that the projected larger precipitation events will stimulate grassland productivity, and this stimulation might be amplified by increasing N deposition.
学科领域	Multidisciplinary Sciences
DOI	10.1038/srep26901
收录类别	SCI
语种	英语
WOS关键词	NITROGEN ADDITION ; INNER-MONGOLIA ; USE EFFICIENCY ; ECOSYSTEM ; WATER ; CLIMATE ; PULSES ; PHOTOSYNTHESIS ; BIODIVERSITY ; CONVERGENCE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000377071800001
出版者	NATURE PORTFOLIO
文献子类	Article
出版地	BERLIN
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31400425, 31570437, 41301043, 31420103917] ; Youth Innovation Promotion Association, CAS [2015037] ; Funding for talented young scientists of IGSNRR [2013RC203] ; National Key Project of Scientific and Technical Supporting Program [2013BAC03B03]
作者邮箱	huzm@igsnrr.ac.cn ; lisg@igsnrr.ac.cn
作品OA属性	Green Published, gold
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25172
专题	植被与环境变化国家重点实验室
作者单位	1.[Guo, Qun 2.Hu, Zhong-min 3.Li, Sheng-gong 4.Yu, Gui-rui 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 6.[Li, Ling-hao 7.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 8.Natl Inst Environm Studies, Global Carbon Cycle Res Sect, CGER, Tsukuba, Ibaraki 3058506, Japan
推荐引用方式 GB/T 7714	Guo, Qun,Hu, Zhong-min,Li, Sheng-gong,et al. Exogenous N addition enhances the responses of gross primary productivity to individual precipitation events in a temperate grassland[J]. SCIENTIFIC REPORTS,2016,6.
APA	Guo, Qun.,Hu, Zhong-min.,Li, Sheng-gong.,Yu, Gui-rui.,Sun, Xiao-min.,...&Bai, Wen-ming.(2016).Exogenous N addition enhances the responses of gross primary productivity to individual precipitation events in a temperate grassland.SCIENTIFIC REPORTS,6.
MLA	Guo, Qun,et al."Exogenous N addition enhances the responses of gross primary productivity to individual precipitation events in a temperate grassland".SCIENTIFIC REPORTS 6(2016).

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