地理科学 ›› 1990, Vol. 10 ›› Issue (1): 48-57,96.doi: 10.13249/j.cnki.sgs.1990.01.48

• 论文 • 上一篇    下一篇

海平面上升与地面沉降对黄河三角洲影响初步研究

任美锷   

  1. 中国科学院地学部委员 南京大学大地海洋科学系
  • 出版日期:1990-01-20 发布日期:1990-01-20

EFFECT OF SEALEVEL RISE AND LAND SUBSIDENCE ON THE HUANGHE RIVER DELTA

Ren Meie   

  1. Department of Geo and Ocean Science, Nanjing University
  • Online:1990-01-20 Published:1990-01-20

摘要: 沿海的黄河三角洲地势低淦,广大面积海拔不足2m,下一世纪海平面上升,加上地面沉降,大片低地将被海潮吞没,同时海水渗入内陆,农业将受巨大影响,必须及时采取有效措施,加以防范。

Abstract: The Holocene Huanghe River Delta,with an area of 25,000km2,is one of the largest deltas in the world.The paper focusses on its coastal plain,including 3 younger deltas,i.e.,the delta near Tianjin,the modern delta and the aban-doned delta.In the first two deltas,land subsidence,both natural and man-induced,is serious and recent sealevel rise is mainly relative and a result of land subsidence.The major direct impacts of relative sealevel rise on the Huanghe River Delta are submergence and salinity increase.As a great part of the three younger deltas is less than 2m above sealevel,with a rising sealevel,the da-nger of submergence is great,especially during the storm surge.With a rising sea level,low-lying coastal plain will increasingly suffer from salt water int-rusion and drainage will be more difficult.Decisive action is urgently needed to avert or mitigate adverse effects.