地理研究 ›› 1983, Vol. 2 ›› Issue (2): 99-107.doi: 10.11821/yj1983020011

• 综述 • 上一篇    下一篇

南水北调对长江口盐水入侵影响的预测

韩乃斌   

  1. 南京水利科学研究所
  • 收稿日期:1982-04-12 修回日期:1982-07-22 出版日期:1983-06-15 发布日期:1983-06-15

PREDICTON OF THE CHANGES OF SALINITY INTRUSION IN THE YANGTZE ESTUARY

Han Naibing   

  1. Nanjing Hydraulic Research Institute
  • Received:1982-04-12 Revised:1982-07-22 Online:1983-06-15 Published:1983-06-15

摘要: 本文简单地介绍了长江口地区盐水入侵情况,洪季长江上游径流量大,盐水入侵区在长江口外,对工农业生产没有什么影响.枯季,特别在干旱年份,长江口盐水入侵较为严重,在最不利的情况下,整个南支河段可为3‰左右的盐度所控制.文中根据实测资料的统计分析,预测了枯水年、平水年和丰水年南水北调对上海市吴淞口氯度变化的影响;还采用一维近似计算和相关分析法两个途径,预测南水北调后长江口5‰盐水入侵长度的变化情况.最后指出,洪季调水对长江口盐水入侵影响甚微,枯季调水,则需持慎重态度.长江口北支是盐水入侵的第二个自然污染源,如果堵塞北支,则可完全抵销南水北调所带来的对长江口盐水入侵的影响.

Abstract: Based upon the analysis of observed data,this paper shows that the length of salinity intrusion of the Yangtze Estuary is mainly controlled by runoff. During flood season the effect of salinity intrusion is negligible, while at dry season it is remarkable and 3PPT salinity water may be found throughont the South Branch.