Isotope signatures of N2O emitted from vegetable soil: Ammonia oxidation drives N2O production in NH4+-fertilized soil of North China

doi:10.1038/srep29257

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 旱作节水研究室

	Isotope signatures of N2O emitted from vegetable soil: Ammonia oxidation drives N2O production in NH4+-fertilized soil of North China
	Zhang, Wei 1; Li, Yuzhong 1,2; Xu, Chunying 1; Li, Qiaozhen 1; Lin, Wei 1
刊名	SCIENTIFIC REPORTS
	2016
卷号	6 页码:-
ISSN号	2045-2322
DOI	10.1038/srep29257
通讯作者	Zhang, Wei
英文摘要	Nitrous oxide (N2O) is a potent greenhouse gas. In North China, vegetable fields are amended with high levels of N fertilizer and irrigation water, which causes massive N2O flux. The aim of this study was to determine the contribution of microbial processes to N2O production and characterize isotopic signature effects on N2O source partitioning. We conducted a microcosm study that combined naturally abundant isotopologues and gas inhibitor techniques to analyze N2O flux and its isotopomer signatures [delta N-15(bulk), delta O-18, and SP (intramolecular N-15 site preference)] that emitted from vegetable soil after the addition of NH4+ fertilizers. The results show that ammonia oxidation is the predominant process under high water content (70% water-filled pore space), and nitrifier denitrification contribution increases with increasing N content. delta N-15(bulk) and delta O-18 of N2O may not provide information about microbial processes due to great shifts in precursor signatures and atom exchange, especially for soil treated with NH4+ fertilizer. SP and associated two end-member mixing model are useful to distinguish N2O source and contribution. Further work is needed to explore isotopomer signature stability to improve N2O microbial process identification.
学科主题	Multidisciplinary Sciences
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000379242800003
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19681]
专题	农业环境与可持续发展研究所_旱作节水研究室
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China 2.Chinese Acad Agr Sci, Environm Stable Isotope Lab, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Wei,Li, Yuzhong,Xu, Chunying,et al. Isotope signatures of N2O emitted from vegetable soil: Ammonia oxidation drives N2O production in NH4+-fertilized soil of North China[J]. SCIENTIFIC REPORTS,2016,6:-.
APA	Zhang, Wei,Li, Yuzhong,Xu, Chunying,Li, Qiaozhen,&Lin, Wei.(2016).Isotope signatures of N2O emitted from vegetable soil: Ammonia oxidation drives N2O production in NH4+-fertilized soil of North China.SCIENTIFIC REPORTS,6,-.
MLA	Zhang, Wei,et al."Isotope signatures of N2O emitted from vegetable soil: Ammonia oxidation drives N2O production in NH4+-fertilized soil of North China".SCIENTIFIC REPORTS 6(2016):-.