地理学报 ›› 1998, Vol. 65 ›› Issue (2): 166-173.doi: 10.11821/xb199802009

• 论文 • 上一篇    下一篇

洞庭湖区1996年特大洪涝灾害的特点与成因分析

李景保   

  1. 湖南师范大学资源与环境学系,长沙410081
  • 收稿日期:1996-11-01 修回日期:1997-04-01 出版日期:1998-03-15 发布日期:1998-03-15

A STUDY ON THE FEATURES AND CAUSES OF THE FLOOD DISASTERS IN DONGTING LAKE PLAIN IN 1996

Li Jingbao   

  1. Department of Resource and Environment, Hunan Normal University, Changsha 410081
  • Received:1996-11-01 Revised:1997-04-01 Online:1998-03-15 Published:1998-03-15

摘要: 本文在分析1996年洞庭湖区洪涝灾害特点的基础上,着重研究其地形、雨情、水情和灾情特征以及它们之间的相关性。并与1954年特大洪涝灾害年份进行了比较。

关键词: 洞庭湖区, 暴雨, 洪水, 洪涝灾害

Abstract: Heavy storm rains caused huge torrents and hit the Dongting Lake Plain from July to August in 1996. About 53.63?10 4 hm 2 land in this region were submerged by the flood water, with total economic loss of RMB 3 036.4?10 8 Yuan. Based on the investigation and the analysis by the author, some important conclusions about the features and the causes of the flood disasters are got as follows. (1) The flood disaster showed some special features such as the vast disaster areas, the serious economic and social losses, the obvious regional difference and losses caused by the flood disaster being enlarged evidently. (2) Compared with the flood disasters in 1954, the direct economic losses caused by the flood disasters in 1996 are four and half times as great as those caused by the flood disasters in 1954, although the rainfall, flood scale and the affected areas are smaller than those in 1954. (3) The specific environmental conditions such as the dishshaped structure of the Lake basin and the tremendous water supply of Xiang, Zi, Yuan and Li rivers in flood season caused the flood disasters. (4) Those special factors such as that the four times of the storms happened from July 1 to August 3 and the three times of the convergences of the flood water of Changjiang River and the four rivers of Xiang, Zi, Yuan and Li strengthened the force of flood water to cause the disasters. (5) The other factors were those such as the lack of flood control capacity of the four rivers, the degeneration of the function of flood control and drain of the Dongting Lake and the lower standard of flood control and drain in this region. (6) The regional difference of economic development in the Dongting Lake basin was the primary factor which made the direct economic losses bigger than that in 1954 as well as made the disasters to be differed obviously in space.

Key words: the Dongting Lake basin, rain storm, flood, flood disaster

中图分类号: 

  • P333.2