地球科学进展 ›› 2019, Vol. 34 ›› Issue (2): 202 -209. doi: 10.11867/j.issn.1001-8166.2019.02.0202

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张咏华,吴自军 *( )   
  1. 1. 同济大学海洋地质国家重点实验室,上海 200092
  • 收稿日期:2018-10-30 修回日期:2018-12-11 出版日期:2019-02-10
  • 通讯作者: 吴自军 E-mail:wuzj@tongji.edu.cn
  • 基金资助:

Sedimentary Organic Carbon Mineralization and Its Contribution to the Marine Carbon Cycle in the Marginal Seas

Yonghua Zhang,Zijun Wu *( )   

  1. 1. State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
  • Received:2018-10-30 Revised:2018-12-11 Online:2019-02-10 Published:2019-03-26
  • Contact: Zijun Wu E-mail:wuzj@tongji.edu.cn
  • About author:Zhang Yonghua(1994-), female, Zhangjiakou City, Hebei Province, Master student. Research areas include marine biogeochemistry. E-mail:1632943@tongji.edu.cn|Wu Zijun(1973-), male, Anqing City, Anhui Province, Professor. Research areas include marine environmental and biogeochemistry. E-mail: wuzj@tongji.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China “Organic matter diagenetic mineralization process and its contribution to pore water Dissolved Inorganic Carbon (DIC) in the sediments of Beibu Gulf, South China Sea”(No.41676061);The Shanghai Natural Science Foundation Project “Sulphate reduction and formation of iron and sulfur minerals under different salinity environments in the sediments of the Changjiang Estuary and its adjacent seas”(No. 16ZR1438200);Project supported by the National Natural Science Foundation of China “Organic matter diagenetic mineralization process and its contribution to pore water Dissolved Inorganic Carbon (DIC) in the sediments of Beibu Gulf, South China Sea” (No.41676061); The Shanghai Natural Science Foundation Project “Sulphate reduction and formation of iron and sulfur minerals under different salinity environments in the sediments of the Changjiang Estuary and its adjacent seas” (No. 16ZR1438200).


Continental margin sediments are important ocean carbon repository, and the internal carbon cycle is mainly driven by the mineralization processes of sedimentary organic matter. Most organic carbon is transformed to Dissolved Inorganic Carbon (DIC) by mineralization processes after being delivered to continental margin sediments, and DIC from pore water diffuses into the upper water column and participates in the ocean carbon cycle. At the same time, some DIC combines ions such as Ca2+ and Mg2+ and precipitates as authigenic carbonate minerals so that carbon is stored in the deposits. Based on the biogeochemical study of the mechanism and efficiency of organic matter burial, we discussed the interaction among sulfate reduction, methanogenesis and anaerobic oxidation of methane, and the effect of organic mineralization on the formation of authigenic carbonate. By reviewing the above-mentioned aspects, we can obtain a better understanding of the role of continental margin sediments in the global carbon cycling budgets as well as its climate and environmental effects.


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