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	Dissimilatory nitrate reduction processes in typical chinese paddy soils: rates, relative contributions, and influencing factors
	Shan, Jun1; Zhao, Xu1; Sheng, Rong2,3; Xia, Yongqiu1; Ti, Chaopu1; Quan, Xiaofei1,4; Wang, Shuwei1,4; Wei, Wenxue2,3; Yan, Xiaoyuan1
刊名	Environmental science & technology
	2016-09-20
卷号	50期号:18页码:9972-9980
ISSN号	0013-936X
DOI	10.1021/acs.est.6b01765
通讯作者	Yan, xiaoyuan(yanxy@issas.ac.cn)
英文摘要	Using soil slurry-based n-15 tracer combined with n-2/ar technique, the potential rates of denitrification, anaerobic ammonium oxidation (anammox), and dissimilatory nitrate reduction to ammonium (dnra), and their respective contributions to total nitrate reduction were investigated in 11 typical paddy soils across china. the measured rates of denitrification, anammox, and dnra varied from 2.37 to 8.31 nmol n g(-1) h(-1), 0.15 to 0.77 nmol n g(-1) h(-1) and 0.03 to 0.54 nmol n g(-1) h(-1), respectively. the denitrification and anammox rates were significantly correlated with the soil organic carbon content, nitrate concentration, and the abundance of nosz genes. the dnra rates were significantly correlated with the soil c/n, extractable organic carbon (eoc)/no3- ratio, and sulfate concentration. denitrification was the dominant pathway (76.75-92.47%), and anammox (4.48-9.23%) and dnra (0.54-17.63%) also contributed substantially to total nitrate reduction. the n loss or n conservation attributed to anammox and dnra was 4.06-21.24 and 0.89-15.01 g n m(-2) y(-1), respectively. this study reports the first simultaneous investigation of the dissimilatory nitrate reduction processes in paddy soils, highlighting that anammox and dnra play important roles in removing nitrate and should be considered when evaluating n transformation processes in paddy fields.
WOS关键词	ANAEROBIC AMMONIUM OXIDATION ; INLET MASS-SPECTROMETER ; RIBOSOMAL-RNA GENES ; NITROUS-OXIDE ; AGRICULTURAL SOILS ; AQUATIC ECOSYSTEMS ; OXIDIZING BACTERIA ; ANAMMOX BACTERIA ; MARINE-SEDIMENTS ; DENITRIFICATION
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000384037900021
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2375809
专题	中国科学院大学
通讯作者	Yan, Xiaoyuan
作者单位	1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Inst Subtrop Agr, Soil Mol Ecol Sect, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China 3.Chinese Acad Sci, Inst Subtrop Agr, Soil Mol Ecol Sect, Taoyuan Agroecosyst Res Stn, Changsha 410125, Hunan, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shan, Jun,Zhao, Xu,Sheng, Rong,et al. Dissimilatory nitrate reduction processes in typical chinese paddy soils: rates, relative contributions, and influencing factors[J]. Environmental science & technology,2016,50(18):9972-9980.
APA	Shan, Jun.,Zhao, Xu.,Sheng, Rong.,Xia, Yongqiu.,Ti, Chaopu.,...&Yan, Xiaoyuan.(2016).Dissimilatory nitrate reduction processes in typical chinese paddy soils: rates, relative contributions, and influencing factors.Environmental science & technology,50(18),9972-9980.
MLA	Shan, Jun,et al."Dissimilatory nitrate reduction processes in typical chinese paddy soils: rates, relative contributions, and influencing factors".Environmental science & technology 50.18(2016):9972-9980.

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