长江科学院院报 ›› 2012, Vol. 29 ›› Issue (9): 14-17.DOI: 10.3969/j.issn.1001-5485.2012.09.004

• 水资源与环境 • 上一篇    下一篇

长江口北支倒灌对南支水域水质影响初探

唐建华，刘玮祎，陶 静，李 璐   

  1. 长江勘测规划设计研究院 上海分院，上海   200439
  • 收稿日期:2011-07-28 修回日期:2011-10-10 出版日期:2012-09-01 发布日期:2012-09-13
  • 作者简介:唐建华（1981-），男，湖北广水人，工程师，硕士，主要从事河口海岸水资源、水动力方面的工作
  • 基金资助:

    长江水利委员会长江勘测规划设计研究院科研与技术创新资助项目（CX200829；CX200830）

Influence of Water Intrusion from the North Branch of Changjiang Estuary on the Water Quality of South Branch

TANG Jian-hua, LIU Wei-yi, TAO Jing, LI Lu   

  1. Shanghai Branch, Changjiang Institute of Survey, Planning, Design and Research, Shanghai   200439, China
  • Received:2011-07-28 Revised:2011-10-10 Online:2012-09-01 Published:2012-09-13

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摘要： 为研究在长江口水环境问题日益突出的情况下，北支倒灌对南支水域水质的影响，以南支上段受北支倒灌直接影响的东风西沙水域为例，采用实测资料分析和数学模型计算结合的手段，就北支倒灌对南支水质的影响进行探讨。结果表明：一般情况下，北支水域水质条件劣于南支水域；北支倒灌明显影响东风西沙水域水质的时间为大潮期；北支倒灌污水进入东风西沙水域后，在可利用的淡水时段，部分项目的水质类别有所降低，北支倒灌对南支水域的水质有一定影响；鉴于北支倒灌的复杂性，需加强北支倒灌期南支水域与北支同步的水质监测。

关键词: 长江口, 北支, 倒灌, 南支, 水质

Abstract: To investigate the influence of water intrusion from the north branch on the water quality of the south branch of Changjiang estuary, characteristics of water intrusion from the north branch  was studied on the basis of the statistics of measured water quality data and numerical model. Results indicated that: water quality of the north branch was worse than that of the south branch in general; the influence of water intrusion from the north branch on the water quality of the south branch was very obvious during spring tide; water quality of the south branch may become worse after water intrusion from the north branch. It's concluded that water intrusion from the north branch has a negative influence on the water quality of the south branch. Due to the complexity of water intrusion  from the north branch, water quality in both the branches needs to be monitored synchronously during the water intrusion.

Key words: Changjiang estuary, north branch, water intrusion, south branch, water quality

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