中国地理科学(英文版) ›› 1994, Vol. 4 ›› Issue (3): 242-251.

• 论文 • 上一篇    下一篇

THE CHANGE OF THE GENERAL FORM AND THE TRANSPORT OF THE WATER, LOAD AND SALT ABOUT THE NORTH-BRANCH OF THE CHANGJIANG RIVER MOUTH

陈宝冲   

  1. Nanjing University, Uanjing 210008, PRC
  • 出版日期:1994-09-20 发布日期:2011-12-16

THE CHANGE OF THE GENERAL FORM AND THE TRANSPORT OF THE WATER, LOAD AND SALT ABOUT THE NORTH-BRANCH OF THE CHANGJIANG RIVER MOUTH

Chen Baochong   

  1. Nanjing University, Uanjing 210008, PRC
  • Online:1994-09-20 Published:2011-12-16

摘要:

The general form of the north-branch of the Changjiang River mouth has changed much as a result of the change of the main stream lines of the Nantong reach of the Changjiang River and the influence of human activities since 1915. By the 1930s, the main stream lines of the Nantong reach of the Changjiang River has shifted to the Tongzhou Bar west channel. The north-branch at the Changjiang River mouth has become atrophic because of Tongzhou Bar east channel's deposition. After 1958, Toughal Bar and Jiangxin Bar were exploited. And in 1970, the north channel of Jiangxin Bar was blocked up. All these things make the water of the north-branch more difficult to pass through. It leads to the decline of the total discharge percentage of the north-branch. And it causes the rising tide to go back to the south-branch. However, since 1978, with the development of Tongzhou Bar east channel and its left bank being scoured, the water amount of the north-branch has been increasing. And the water, load and salt of going back to the south-branch has been becoming less.

关键词: north-branch of the Changjiang River mouth, change of river form, transport of water, load and salt

Abstract:

The general form of the north-branch of the Changjiang River mouth has changed much as a result of the change of the main stream lines of the Nantong reach of the Changjiang River and the influence of human activities since 1915. By the 1930s, the main stream lines of the Nantong reach of the Changjiang River has shifted to the Tongzhou Bar west channel. The north-branch at the Changjiang River mouth has become atrophic because of Tongzhou Bar east channel's deposition. After 1958, Toughal Bar and Jiangxin Bar were exploited. And in 1970, the north channel of Jiangxin Bar was blocked up. All these things make the water of the north-branch more difficult to pass through. It leads to the decline of the total discharge percentage of the north-branch. And it causes the rising tide to go back to the south-branch. However, since 1978, with the development of Tongzhou Bar east channel and its left bank being scoured, the water amount of the north-branch has been increasing. And the water, load and salt of going back to the south-branch has been becoming less.

Key words: north-branch of the Changjiang River mouth, change of river form, transport of water, load and salt