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地球科学进展  2013, Vol. 28 Issue (7): 751-764    DOI: 10.11867/j.issn.1001-8166.2013.07.0751
热带海洋环境国家重点实验室,中国科学院南海海洋研究所,广东 广州 510301
Marine Nitrogen Cycle Recorded by Nitrogen and Oxygen Isotope Fractionation of Nitrate
Hong Yiguo
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanography, Chinese Academy of Sciences, Guangzhou 510301,China
 全文: PDF(840 KB)  


关键词: 海洋氮素生物地球化学循环硝酸盐氮氧稳定同位素分馏    

Nitrogen cycle in ocean is mainly driven by microbial processes, which plays important roles in the marine production and influences the global climate change. Different  microbial nitrogen transformation processes, including nitrogen assimilation, nitrogen fixing, nitrification and denitrification, are all associated with different isotope effect of both the nitrogen and oxygen atoms, impacting the composition of the nitrogen and oxygen isotope of nitrate in the sea or ocean. Therefore, N-isotopic tracers can provide qualitative and quantitative information on extant processes on local scales. Bacterial denitrification method provides  an important and powerful approach for this kind of study, which can transform the signal of N/O isotope in nitrate into N2O. Through investigating the composition of coupled N/O isotope in N2O, each of microbial process for nitrogen transformation can be determined exactly.

Key words: Marine nitrogen biogeochemical cycle    Nitrate    Nitrogen and oxygen isotope fractionation
收稿日期: 2013-01-23 出版日期: 2013-07-10
:  P736.4  


通讯作者: 洪义国(1974-),男,内蒙古赤峰人,副研究员,主要从事海洋氮素循环研究.     E-mail:
作者简介: 洪义国(1974-),男,内蒙古赤峰人,副研究员,主要从事海洋氮素循环研究
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洪义国. 硝酸盐氮氧稳定同位素分馏过程记录的海洋氮循环研究进展[J]. 地球科学进展, 2013, 28(7): 751-764.

Hong Yiguo. Marine Nitrogen Cycle Recorded by Nitrogen and Oxygen Isotope Fractionation of Nitrate. Advances in Earth Science, 2013, 28(7): 751-764.


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