海洋学研究 ›› 2021, Vol. 39 ›› Issue (4): 11-21.DOI: 10.3969/j.issn.1001-909X.2021.04.002

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河流-河口-近海连续体碳循环研究进展

  

  1. 1.自然资源部海洋生态系统动力学重点实验室，浙江 杭州 310012； 
    2.自然资源部第二海洋研究所，浙江 杭州 310012； 
    3.山东大学海洋研究院，山东 青岛 266237； 
    4.中国科学院青岛生物能源与过程研究所，山东 青岛 266101
  • 出版日期:2021-12-15 发布日期:2022-01-25
  • 通讯作者: 陈建芳(1968-)，男，研究员，主要从事海洋生物地球化学研究
  • 基金资助:
    “全球变化与海气相互作用”专项二期任务（长江口缺氧酸化预警监测）；中央级公益性科研院所基本科研业务费专项资金资助项目(SZ2001)；国家自然科学基金浙江两化融合联合基金(U1709201，U1709202)；国家自然科学基金极地基础前沿专项项目(41941013)


A review of the carbon cycle in river-estuary-coastal ocean continuum

  1. 1.Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources, Hangzhou 310012, China; 

    2.Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China; 

    3.Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China; 

    4.Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
  • Online:2021-12-15 Published:2022-01-25

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摘要： 河流-河口-近海连续体(简称连续体)是连接陆地和大洋的过渡地带，也是目前全球碳收支估算的薄弱环节。这个复杂的海陆交互生态系统不仅可以通过光合作用、溶解作用吸收大气中的CO2，陆地和流域光合作用或化学风化作用固定的碳也可以被横向输送到陆架和大洋中。本文以国际上著名的切萨皮克湾以及长江-长江口-东海等为例，综述了连续体碳循环研究的进展，并指出通过陆海统筹、海空一体、点线面结合的系统观测，结合动力-生态数值模拟、沉积记录开展多时空尺度过程机制分析研究，是阐明气候变化与人类活动双重压力下，河流-河口-近海连续体碳交换的演变规律及其对碳收支的影响的可行途径。

关键词: 连续体, 海-气碳通量, 海洋碳汇, 河口生物地球化学循环

Abstract: The river-estuary-coastal ocean continuum (referred to as the continuum hereinafter) is a transition zone connecting lands and oceans. The carbon budgets in the continuum are dynamic and uncertain components in global carbon budgets. This complex landocean interactive ecosystem can absorb atmospheric CO2 through photosynthesis and dissolution of CO2. Also, the carbon fixed by photosynthesis or chemical weathering in land and watershed can be transported horizontally to the shelf waters and open oceans. In this paper, the progress of carbon cycles in the continuum is reviewed by taking the famous Chesapeake Bay and Changjiang Estuary-East China Sea continuum as typical examples. It is concluded that systematic observation characterized with land-sea coordination, sea-space integration, point-line combination, should be combined with physicalecological numerical simulation to reveal the multiple time-space scale processes. The strategy is generally operable, and the historical retrospective of results is also achievable. Thus, it can be used to clarify the evolution of carbon exchange along the river-estuary-coastal ocean continuum and their influences on carbon budgets under the combined pressures of climate change and anthropogenic activities.


Key words: continuum, air-sea CO2 flux, marine carbon sink, estuarine biogeochemical cycles

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