SCSIO OpenIR  > 广东省海洋药物重点实验室
Nitrous oxide concentration and nitrification and denitrification in Zhujiang River Estuary, China
Xu, JR; Wang, YS; Wang, QJ; Yin, JP; jirongxu@sina.com
2005
发表期刊ACTA OCEANOLOGICA SINICA
ISSN0253-505X
卷号24期号:3页码:122-130
摘要The concentrations of nitrous oxide varies between 57 and 329 nmol/dm(3), saturation is 674%similar to 4 134% in the Zhujiang River Estuary. This suggests that the area is an emissive source of nitrous oxide. The acetylene inhibition technique is employed to evaluate the rates of nitrification, denitrification and nitrate reduction by bacterial activities in the sediments at three sites. The average of nitrification, denitrification and nitrate reduction rates ranges from 0.32 to 2.43, 0.03 to 0.84 and 4.17 to 13.06 mmol/(m(2) center dot h), respectively. The vertical profiles of the sediments show that the nitrification and denitrification processes mainly take place in the depth from 0 to 4 cm and depend on regional conditions. The rates of nitrification, denitrification and nitrate reduction are dominated by Eh, nitrate and ammonium concentrations in sediments and DO in overlay water. There is a coupling between nitrification and denitrification.
部门归属Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China; Ningbo Univ, Fac Architectural Engn & Environm, Zhejiang 315211, Peoples R China
关键词Nitrous Oxide Nitrification Denitrification Nitrate Reduction Acetylene Inhibition Technique Bacterial Activities Zhujiang River Estuary
学科领域Oceanography
收录类别sci
资助项目广东省海洋药物重点实验室
WOS记录号WOS:000231257900014
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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.scsio.ac.cn/handle/344004/2237
专题广东省海洋药物重点实验室
通讯作者jirongxu@sina.com
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GB/T 7714
Xu, JR,Wang, YS,Wang, QJ,et al. Nitrous oxide concentration and nitrification and denitrification in Zhujiang River Estuary, China[J]. ACTA OCEANOLOGICA SINICA,2005,24(3):122-130.
APA Xu, JR,Wang, YS,Wang, QJ,Yin, JP,&jirongxu@sina.com.(2005).Nitrous oxide concentration and nitrification and denitrification in Zhujiang River Estuary, China.ACTA OCEANOLOGICA SINICA,24(3),122-130.
MLA Xu, JR,et al."Nitrous oxide concentration and nitrification and denitrification in Zhujiang River Estuary, China".ACTA OCEANOLOGICA SINICA 24.3(2005):122-130.
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