上游河口溶解氧的输入对珠江口缺氧影响的数值模拟研究
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- 英文论文题名：A numerical study on the responses of hypoxia in the Pearl River estuary to upstream input of dissolved oxygen
- 论文作者：汪斌 ; 胡嘉镗 ; 李适宇 ; 梁博
- 英文论文作者：Bin Wang ; Jiatang Hu ; Shiyu Li ; Bo Liang ; School of Environmental Science and Engineering ; Sun Yat-Sen University
- 年：2016
- 作者机构：中山大学环境科学与工程学院;
- 论文关键词：生化过程再分配 ; 收支分析 ; 缺氧 ; 珠江口
- 英文论文关键词：Physical modulation ; Oxygen balance ; Hypoxia ; Pearl River Estuary
- 会议召开时间：2016-12-14
- 会议录名称：2016全国水环境污染控制与生态修复技术高级研讨会论文集
- 语种：中文
- 分类号：P342.2
- 学会代码：HJKP
- 会议名称：2016全国水环境污染控制与生态修复技术高级研讨会
- 会议地点：中国云南腾冲
- 主办单位：中国环境科学学会、中国环境科学研究院
- 学会名称：中国环境科学学会
- 页数：6
- 文件大小：11594k
- 原文格式：D
- 会议级别：全国
摘要
上游口门输入是珠江口中溶解氧的重要来源,但是目前对他们重要性的研究仍然较少。因此,本文使用了一套物理-生化耦合模型来研究上游河口的溶解氧输入对珠江口缺氧的影响。由于生化过程可以通过直接产生或消耗局地溶解氧,也可以通过改变来自周围水体的溶解氧输送通量来影响局地的溶解氧浓度。因此本文提出了生化过程再分配的概念对后一机制进行研究。研究结果表明除口门附近,上游输入的改变对珠江口的溶解氧分布影响不大。但是输入的改变会使得磨刀门外缺氧区的氧收支过程发生改变,且边界条件和各生化过程对溶解氧输送过程的贡献也有改变。
Oxygen input to the Pearl River Estuary(PRE) can be important, however the importance has not been examined. Herein, we use a physical-biochemical model to study the effects of upstream input on the hypoxia in the PRE. Since biogeochemical processes can affect DO concentrations by directly consuming or generating oxygen locally, or through changing the DO fluxes from the ambient water bodies, we hence propose a new concept of physical modulation of biochemical terms to study this mechanism. The results showed that the changes in the upstream input had little impacts on the distribution of hypoxia in the PRE. However, the oxygen budget as well as contributions of boundary conditions and each biochemical terms to oxygen fluxes would be changed.
Oxygen input to the Pearl River Estuary(PRE) can be important, however the importance has not been examined. Herein, we use a physical-biochemical model to study the effects of upstream input on the hypoxia in the PRE. Since biogeochemical processes can affect DO concentrations by directly consuming or generating oxygen locally, or through changing the DO fluxes from the ambient water bodies, we hence propose a new concept of physical modulation of biochemical terms to study this mechanism. The results showed that the changes in the upstream input had little impacts on the distribution of hypoxia in the PRE. However, the oxygen budget as well as contributions of boundary conditions and each biochemical terms to oxygen fluxes would be changed.
引文
[1]Cai,S.Q.,Zheng,S.,and Wei,X.:Progress on the hydrodynamic characteristics and the hypoxia phenomenon in the Pearl River Estuary,JOURNAL OF TROPICAL OCEANOGRAPHY(in Chinese),32,1-8,2013.
[2]Dong,L.,Su,J.,Wong,L.,Cao,Z.,and Chen,J.:Seasonal variation and dynamics of the Pearl River plume,Continental Shelf Research,24,1761-1777,2004.
[3]Du,J.B.,and Shen,J.:Decoupling the influence of biological and physical processes on the dissolved oxygen in the Chesapeake Bay,Journal of Geophysical Research-Oceans,120,78-93,2015.
[4]Hagy,J.D.,Boynton,W.R.,Keefe,C.W.,and Wood,K.V.:Hypoxia in Chesapeake Bay,1950-2001:Long-term change in relation to nutrient loading and river flow,Estuaries,27,634-658,2004.
[5]Hu,J.T.,and Li,S.Y.:Modeling the massfluxes and transformations of nutrients in the Pearl River Delta,China,J.Mar.Syst.,146-167,2009.
[6]Hydro Qual,I.:A Primer for ECOMSED Version 1.3,2002.
[7]Hydro Qual,I.:User's Guide for RCA(Release 3.0),2004.
[8]Liu,D.,Hu,J.,Li,S.,and Huang,J.:Validation and application of a three-dimensional coupled water quality and sediment model of the Pearl River Estuary,Acta Scientiae Circumstantiae(in Chinese),1-16,2015.
[9]Rabouille,C.,Conley,D.J.,Dai,M.H.,Cai,W.J.,Chen,C.T.A.,Lansard,B.,Green,R.,Yin,K.,Harrison,P.J.,Dagg,M.,and Mc Kee,B.:Comparison of hypoxia among four river-dominated ocean margins:The Changjiang(Yangtze),Mississippi,Pearl,and Rh?ne rivers,Continental Shelf Research,28,1527-1537,2008.
[10]Yu,L.Q.,Fennel,K.,and Laurent,A.:A modeling study of physical controls on hypoxia generation in the northern Gulf of Mexico,Journal of Geophysical Research-Oceans,120,5019-5039,2015.
[11]Zhang,H.,and Li,S.Y.:Numerical study on the vertical transport of dissolved oxygen in the Zhujiang(Pearl)River Estuary in summer,Acta Oceanologica Sinica(in Chinese),32,34-46,2010.
[2]Dong,L.,Su,J.,Wong,L.,Cao,Z.,and Chen,J.:Seasonal variation and dynamics of the Pearl River plume,Continental Shelf Research,24,1761-1777,2004.
[3]Du,J.B.,and Shen,J.:Decoupling the influence of biological and physical processes on the dissolved oxygen in the Chesapeake Bay,Journal of Geophysical Research-Oceans,120,78-93,2015.
[4]Hagy,J.D.,Boynton,W.R.,Keefe,C.W.,and Wood,K.V.:Hypoxia in Chesapeake Bay,1950-2001:Long-term change in relation to nutrient loading and river flow,Estuaries,27,634-658,2004.
[5]Hu,J.T.,and Li,S.Y.:Modeling the massfluxes and transformations of nutrients in the Pearl River Delta,China,J.Mar.Syst.,146-167,2009.
[6]Hydro Qual,I.:A Primer for ECOMSED Version 1.3,2002.
[7]Hydro Qual,I.:User's Guide for RCA(Release 3.0),2004.
[8]Liu,D.,Hu,J.,Li,S.,and Huang,J.:Validation and application of a three-dimensional coupled water quality and sediment model of the Pearl River Estuary,Acta Scientiae Circumstantiae(in Chinese),1-16,2015.
[9]Rabouille,C.,Conley,D.J.,Dai,M.H.,Cai,W.J.,Chen,C.T.A.,Lansard,B.,Green,R.,Yin,K.,Harrison,P.J.,Dagg,M.,and Mc Kee,B.:Comparison of hypoxia among four river-dominated ocean margins:The Changjiang(Yangtze),Mississippi,Pearl,and Rh?ne rivers,Continental Shelf Research,28,1527-1537,2008.
[10]Yu,L.Q.,Fennel,K.,and Laurent,A.:A modeling study of physical controls on hypoxia generation in the northern Gulf of Mexico,Journal of Geophysical Research-Oceans,120,5019-5039,2015.
[11]Zhang,H.,and Li,S.Y.:Numerical study on the vertical transport of dissolved oxygen in the Zhujiang(Pearl)River Estuary in summer,Acta Oceanologica Sinica(in Chinese),32,34-46,2010.