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热带海洋学报 >

2016 , Vol. 35 >Issue 2: 57 - 65

DOI: https://doi.org/10.11978/2015059

海洋化学

大亚湾不同海洋功能区表层海水无机碳体系的比较研究*

  • 韩婷婷 ,
  • 齐占会 ,
  • 吴风霞 ,
  • 廖秀丽 ,
  • 马胜伟 ,
  • 付贵权 ,
  • 黄洪辉
展开
  • 中国水产科学研究院南海水产研究所, 广东省渔业生态环境重点实验室, 农业部南海渔业资源开发利用重点实验室, 广东 广州 510300
韩婷婷(1984—), 女, 江苏省连云港市人, 博士, 助理研究员, 主要从事海洋生态学研究。E-mail: hantingting99@sina.com

收稿日期: 2015-04-27

  修回日期: 2015-06-16

  网络出版日期: 2016-02-29

基金资助

中央级公益性科研院所基本科研业务费资助项目(2014A01YY03、2014TS01); 广东省自然科学基金项目(2014A030310331); 农业部南海渔业资源开发利用重点实验室开放基金资助项目(LSF2014-05); 海南省社会发展科技专项(SF201443); 农业部海洋渔业可持续发展重点实验室开放课题(2013-SDMFMA-KF-1)

收起

Comparative study of dissolved inorganic carbon systems of surface waters in various oceanic functional areas of Daya Bay

  • HAN Tingting ,
  • QI Zhanhui ,
  • WU Fengxia ,
  • LIAO Xiuli ,
  • MA Shengwei ,
  • FU Guiquan ,
  • HUANG Honghui
Expand
  • South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment; Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture; Guangzhou 510300, China

Received date: 2015-04-27

  Revised date: 2015-06-16

  Online published: 2016-02-29

Supported by

The Special Fund of Basic Research for Central Non-profit Scientific Research Institute (2014A01YY03, 2014TS01); The National Natural Science Foundation of Guangdong Province (2014A030310331), The Open Program of the Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture (LSF2014-05); The Science & Technology Development Project of Hainan Province (SF201443); The Key Laboratory of Sustainable Development of Marine Fisheries (2013-SDMFMA-KF-2)

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摘要

于2014年分4个季度对大亚湾4个典型功能区(人工鱼礁区、水产养殖区、核电站温排区和石化排污区)以及湾口区表层海水的温度、盐度、pH、总碱度(TA)等进行了调查, 比较分析了不同区域表层水体溶解无机碳(DIC)体系的组成和分布特征, 估算了海-气界面CO2的交换通量(FCO2), 并对FCO2的主要影响因素进行了分析。结果显示, 调查海域表层水体的DIC、HCO3-、CO32-浓度和CO2分压pCO2年变化范围分别为1248.8~1841.9μmol·kg-1(1624.8±143.1μmol·kg-1)、1069.2~1615.7μmol·kg-1 (1382.5±126.1μmol·kg-1)、152.7~283.5μmol·kg-1(236.2±35.4μmol·kg-1)、11.4~44.9Pa (21.2±7.4Pa); 各区域间的DIC、HCO3-、CO32-和pCO2无显著差异(P>0.05)。表层海水FCO2的年变化范围为-37.3~4.5mmol·(m2·d)-1 [-22.4±9.8mmol·(m2·d)-1], 各区域FCO2(按正负数值大小)的季节变化呈现夏季>秋季>春季>冬季的特征, 且夏季显著高于其他季节(P<0.05); 在全年尺度上, 各区域的FCO2均为负值, 表现为大气CO2的汇, 碳汇强度呈现湾口区>鱼礁区>排污区>温排区>养殖区的特征, 而各区域间无显著差异(P>0.05)。偏回归分析显示, 大亚湾湾口区和养殖区的FCO2时空分布主要受盐度影响, 在鱼礁区和温排区主要受温度的影响, 而在排污区则主要受海水pH的影响。

关键词： 大亚湾; 溶解无机碳体系; CO2分压pCO2; 交换通量; 功能区

本文引用格式

韩婷婷 , 齐占会 , 吴风霞 , 廖秀丽 , 马胜伟 , 付贵权 , 黄洪辉 . 大亚湾不同海洋功能区表层海水无机碳体系的比较研究*[J]. 热带海洋学报, 2016 , 35(2) : 57 -65 . DOI: 10.11978/2015059

Abstract

In four different seasons during March-December 2014, four oceanic function areas in Daya Bay, including in an artificial reef area, an aquaculture area, a thermal discharge area, and a petrochemical sewage discharge area, as well as the bay mouth area, were selected as the survey areas. Data of surface temperature, salinity, pH, and total alkalinity (TA) were analyzed to show the distribution of dissolved inorganic carbon (DIC) system, and to estimate sea-air CO2 flux (FCO2) and its influential factors. The results showed that the concentrations of surface DIC, HCO3-, CO32-, and pCO2 ranged from 1248.8 to 1841.9 μmol·kg-1 (1624.8±143.1 μmol·kg-1), 1069.2 to 1615.7 μmol·kg-1 (1382.5±126.1 μmol·kg-1), 152.7 to 283.5 μmol·kg-1 (236.2±35.4 μmol·kg-1), 11.4 to 44.9 Pa (21.2±7.4 Pa), respectively. There were no significant differences among the surveyed areas in terms of concentrations of DIC, HCO3-, CO32-, and pCO2 (P > 0.05). FCO2 ranged from -37.3 to 4.5 mmol·(m2·d) -1 [-22.4± 9.8 mmol·(m2·d)-1]. The seasonal variation of FCO2 showed an order of summer > autumn > spring > winter, according to positive or negative data; and this parameter in summer was significantly higher than those in the other seasons (P < 0.05). At the annual scale, FCO2 in each investigated area had a negative value, indicating a sink of atmosphere CO2. The distribution of regional carbon sink was in the order of bay mouth area > artificial reef area > petrochemical sewage discharge area > thermal discharge area > aquaculture area, no significant difference being found among these areas (P > 0.05). Based on partial regression coefficients, salinity was the main influencing factor for FCO2 in the bay mouth area and agriculture area; water temperature was, in the artificial reef area and thermal discharge area; and pH was, in the petrochemical sewage discharge area.

Key words： Daya Bay; dissolved inorganic carbon system; pCO2; sea-air flux; function area

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