海洋氮循环中稳定氮同位素变化与地质记录研究进展  

Progress in the Study of Marine Stable Nitrogen Isotopic Changes and Its Geological Records

作　　者：朱艳宸 李丽[1] 王鹏[1] 贺娟[1] 贾国东 Zhu Yanchen;Li Li;Wang Peng;He Juan;Jia Guodong(State Key Laboratory of Marine Geology,School of Ocean and Earth Sciences,Tongji University,Shanghai 200092,China)

机构地区：[1]海洋地质国家重点实验室海洋与地球科学学院同济大学,上海200092

出　　处：《地球科学进展》2020年第2期167-179,共13页Advances in Earth Science

基　　金：国家自然科学基金项目“南海沉积物中支链四醚膜脂的组成和碳同位素特征及其对古气候研究的启示”(编号:41673042);“珠江口深古菌(Bathyarchaeota)碳源利用特征研究”(编号:41776134)资助.

摘　　要：海洋氮稳定同位素信号包含了关键的生物地球化学信息,是辨识海洋氮来源、了解海洋氮循环过程的重要途径和手段,该信号通过海洋沉降传递可保存在海洋沉积物中,用以追溯地质历史时期海洋系统中的生物地球化学循环和海洋环境演变。近几十年的研究表明,固氮作用和反硝化作用在海洋氮循环中发挥着关键作用,但海洋环境的时空多变、海洋氮循环过程和物质来源复杂,未来需要结合现代观测、地质记录,综合海洋、生物、地质多个学科,考虑水文环境、地质过程和气候演变等多种因素,才能深刻理解海洋氮循环和气候、环境变化的耦合关系。Marine stable nitrogen isotope containing much key biogeochemical information,is an important way in identifying marine nitrogen sources and understanding the marine nitrogen cycles. These isotopic signals can be preserved in marine sediments and used to trace the marine biogeochemical cycles and environment changes during geological history. Studies in recent decades have illustrated the key role of nitrogen fixation and denitrification. Because of the spatiotemporal variability and the complexity of ocean processes and nitrogen sources in the marine environment,we need to combine the modern observations with geological records,integrate oceanography,biology,and geology,and consider the hydrological environment,geological processes and climate changes,to understand the coupling between the ocean nitrogen cycle,climate and environmental changes.

关 键 词：稳定氮同位素 硝酸盐 颗粒氮 海洋沉积物 古海洋记录 

分 类 号：P736.4[天文地球—海洋地质]