地球科学进展 ›› 2022, Vol. 37 ›› Issue (4): 392 -406. doi: 10.11867/j.issn.1001-8166.2021.119

综述与评述 上一篇    下一篇

海洋藻类生物标志物单体氢同位素与表层海水盐度关系研究进展与启示
贾佳源( ), 贺娟( ), 韦兵兵, 贾国东, 李丽   
  1. 同济大学海洋地质国家重点实验室,上海 200092
  • 收稿日期:2021-06-25 修回日期:2021-10-09 出版日期:2022-04-10
  • 通讯作者: 贺娟 E-mail:1831721@tongji.edu.cn;hj08@tongji.edu.cn
  • 基金资助:
    国家自然科学基金项目“长江口外藻类生物标志化合物氢同位素与海洋盐度关系的研究”(41776049);“晚渐新世—中中新世东亚低纬区降水演化历史及其全球影响”(41876042)

Relationship Between Compound-Specific δD of Marine Algae Biomarkers and Surface Seawater Salinity and Its Implication for Paleoceanography Reconstruction

Jiayuan JIA( ), Juan HE( ), Bingbing WEI, Guodong JIA, Li LI   

  1. State Key Laboratory of Marine Geology,Tongji University,Shanghai 200092,China
  • Received:2021-06-25 Revised:2021-10-09 Online:2022-04-10 Published:2022-04-28
  • Contact: Juan HE E-mail:1831721@tongji.edu.cn;hj08@tongji.edu.cn
  • About author:JIA Jiayuan (1996-), male, Baotou City, Inner Mongolia Autonomous Region, Master student. Research area include organic geochemistry. E-mail: 1831721@tongji.edu.cn
  • Supported by:
    the National Natural Science Foundation of China "Study on the relationship between hydrogen isotope of marine algae biomarkers and seawater salinity off the Yangtze River Estuary"(41776049);"Late Oligocene-Mid-Miocene precipitation evolution history in low latitudes of East Asia and its global impact"(41876042)

生物标志物稳定氢同位素组成包含了重要的环境信息,以长链烯酮、甲藻甾醇和中链脂肪酸为代表的生物标志物氢同位素δD值以及氢同位素分馏被越来越多地应用到古海洋盐度重建的工作中。近20年的研究表明,海洋藻类生物标志物δD值受到诸多因素控制,如盐度、种属、温度和光照等。重点介绍表层海水盐度对海洋藻类脂质δD值的影响,通过汇总培养实验以及实地研究中的藻类生标δD值与盐度的关系,以及已有的藻类生标δD值重建古盐度的应用,提出使用该方法重建古表层海水盐度时存在的问题和需要关注的重点。希望通过研究可以更好地理解藻类生标δD值的应用潜力,为生标单体氢同位素研究提供更准确详尽的信息。

Compound-specific D/H ratios of lipid biomarkers contain valuable environmental information. The δD values of biomarkers represented by long-chain alkenones, dinosterols, and fatty acids have been increasingly applied to reconstruct paleo-Sea-Surface Salinity (SSS). However, studies over the past two decades have shown that the δD of marine algae biomarkers is sensitive to many factors, such as salinity, species, temperature, and light intensity. Here, we focused on the impact of SSS on the δD of marine algae lipids and summarized the relationships between lipid δD and salinity from culture experiments and field studies. Then, based on the successful reconstruction of paleo-salinity with lipid δD, we put forward the problems that need to be addressed when applying it as a paleo-SSS proxy. It is hoped tha t this study will help us better understand the application potential of lipid δD and provide more accurate and detailed information for δD research.

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