地球科学进展

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2020 , Vol. 35 >Issue 9: 933 - 947

DOI: https://doi.org/10.11867/j.issn.1001-8166.2020.073

水生关键带有机碳循环过程：从分子水平到全球尺度

水环境中溶解有机质的光谱表征：从流域到深海

  • 郭卫东 ,
  • 王超 ,
  • 李炎 ,
  • 瞿理印 ,
  • 郎目晨 ,
  • 邓永彬 ,
  • 梁清隆
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  • 1.厦门大学海洋与地球学院，近海海洋环境科学国家重点实验室，福建 厦门 361102
    2.广东海洋大学 海洋与气象学院，广东 湛江 524088
    3.厦门大学东山太古海洋观测与实验站，福建 东山 363400
郭卫东（1968-），男，四川眉山人，教授，主要从事水环境有机质生物地球化学过程研究. E-mail:wdguo@xmu.edu.cn

收稿日期: 2020-08-01

  修回日期: 2020-09-03

  网络出版日期: 2020-10-28

基金资助

国家自然科学基金项目“利用光谱与超高分辨率质谱表征南海—吕宋海峡—西菲律宾海的溶解有机质循环”(41876083);国家自然科学基金委员会—福建省人民政府“促进海峡两岸科技合作联合基金”项目“台湾海峡浮游植物群落演变及其对河口羽流—上升流耦合系统的响应”(U1805241)

收起

Characterization of Aquatic Dissolved Organic Matter by Spectral Analysis： From Watershed to Deep Ocean

  • Weidong Guo ,
  • Chao Wang ,
  • Yan Li ,
  • Liyin Qu ,
  • Muchen Lang ,
  • Yongbin Deng ,
  • Qinglong Liang
Expand
  • 1.College of Ocean and Earth Sciences，State Key Laboratory of Marine Environmental Science，Xiamen University，Xiamen 361102，China
    2.College of Ocean and Meteorology，Guangdong Ocean University，Zhanjiang Guangdong 524088，China
    3.Dongshan Swire Marine Station，Dongshan Fujian 363400，China
Guo Weidong (1968-), male, Meishan City, Sichuan Province, Professor. Research areas include the biogeochemical processes of dissolved organic matter in the aquatic environments. E-mail:wdguo@xmu.edu.cn

Received date: 2020-08-01

  Revised date: 2020-09-03

  Online published: 2020-10-28

Supported by

the National Natural Science Foundation of China “Utilizing optical and ultrahigh resolution mass spectroscopy to characterize the DOM cycle in the South China Sea, Luzon Strait and West Philippine Sea”(41876083);“The phytoplankton community dynamics and its response to coupling interaction between estuarine plume and coastal upwelling in the Taiwan Strait”(U1805241)

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摘要

自20世纪90年代以来，光谱分析逐渐成为表征各种水环境中有色溶解有机质及其荧光组分来源和性质变化的一种重要技术手段。选取跨越了陆—海、陆架—海盆、边缘海—开阔大洋、海洋真光层—无光层等多个界面的福建漳江—漳江河口—东山湾—台湾海峡—南海东北部—吕宋海峡—西太平洋黑潮区垂直剖面，从连续载体的视角，通过对各类溶解有机质定性与定量光谱参数沿程的空间分布及变化趋势的分析，结合已有研究进展，系统总结了从流域到深海水文和生物地球化学梯度显著变化的大背景下，有色溶解有机质和荧光组分的各种来源与去除过程及其调控机制，探讨了不同水环境中溶解有机质定量光谱参数的地球化学分异特征，并对溶解有机质定性光谱指数的示踪能力进行了评析。提出土壤—河流系统的耦合研究、与矿化作用相关联的有色溶解有机质/荧光组分产生的微生物学机制、定量化的地球化学框架体系研究及全球变化的影响应是今后重点关注的课题。

关键词： 有色溶解有机物; 荧光溶解有机物; 光谱参数; 源汇过程; 地球化学分异

本文引用格式

郭卫东 , 王超 , 李炎 , 瞿理印 , 郎目晨 , 邓永彬 , 梁清隆 . 水环境中溶解有机质的光谱表征：从流域到深海[J]. 地球科学进展, 2020 , 35(9) : 933 -947 . DOI: 10.11867/j.issn.1001-8166.2020.073

Abstract

Since 1990s， spectral analysis has become an important technique to characterize the properties of chromophoric and fluorescent dissolved organic matter （CDOM and FDOM） from various aquatic systems and a series of spectral indices have been suggested to trace the sources of DOM and their biogeochemical regulation processes. DOM samples were collected from an aquatic continuum from watershed to deep ocean， i.e. Zhangjiang River and Estuary， Dongshan Bay， Taiwan Strait， Northeast basin of the South China Sea， Luzon Strait and the vertical profile of the Kuroshio region of the West Pacific Ocean. This continuum covered many critical interfaces （land-ocean， shelf-basin， marginal sea basin-open ocean and euphotic and aphotic layer）. The spatial distribution and variation of various qualitative and quantitative parameters along the continuum were clearly revealed. Combined with literature review， the sources and sinks of CDOM/FDOM and their inherent regulation processes under significant hydrological and biogeochemical gradient variation were systematically summarized. The geochemical differentiation of the quantitative DOM spectral index in various aquatic systems was discussed. The tracing ability of the qualitative DOM spectral index was commented. The coupling study of soil-river organic matter systems， mechanism of mineralization-related microbial production of CDOM/FDOM， quantified geochemical framework concept and perturbation of global change on CDOM/FDOM dynamics were suggested as future key topics.

Key words： Chromophoric dissolved organic matter; Fluorescent dissolved organic matter; Spectral index; Source and sink processes; Geochemical differentiation

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