川江流域洪涝成因分析
文献类型：期刊论文
| 作者 | 贺素娣 |
| 刊名 | 山地研究
 |
| 出版日期 | 1991 |
| 卷号 | 9期号:2页码:99-104 |
| 关键词 | 川江流域 洪涝 成因 洪涝频率 |
| ISSN号 | 1008-2786 |
| 其他题名 | GENETIC ANALYSIS OF FLOOD AND WATERLOGGING IN THE CHUANJIANG BASIN, SICHUAN PROVINCE |
| 通讯作者 | 贺素娣 |
| 中文摘要 | 川江流域洪涝频繁而危害大。兹以旬、两旬雨量分别为250—350,350—500毫米作主要洪涝指标。流域内洪涝频率、大面积洪涝频率的分布区域差异明显。洪涝的形成受暴雨和大地形结构控制,此外还受四川盆地地形、水系结构与森林遭破坏等的影响。 |
| 英文摘要 | The Chuanjiang Basin at the upper reaches of Changjiang River in Sichuan Province,with a drainage area of 15×104Km2,is located at 28°- 33°N, 103°- 110°E more or less. Here,the flood and waterlogging disasters are getting more serious day by day. During 1400-1950, flood and waterlogging disasters are 133 times;1951-1980,16 times（6 times of them are large）; 1981-1990,8 times（two are large and one in 1981 is cataclysm）.Excessive rainfall would arise flood and waterlogging. So the ten-days rainfall and of 250-350mm or twenty-days ont of 350-500mm are regarded as index of flood and waterlogging. The flood and waterlogging disasters mostly take place in western and northern basins. Yaan and Beichuan are two centres. Both frequencies （percentage of flood and waterlogging years/statistical years）are 86%, 73% respectively. The vast-area flood and waterlogging disasters with a range ≥ 20 counties （municipalities） mostly presented in centre of the basin for 300 years. The frequency of vast-area flood and waterlogging （percentage of accumulated years of vast-area flood and waterlogging in a certain place/vast-area flood and waterlogging total years in whole basin）in border mountains is 10-12% ,and it is > 50% in centre of the basin. The regional differentiation of the distribution is obvious.The genesis of flood and waterlogging in the Chuanjiang Basin is closely related to rainstorm （rainfall ≥50mm/000d）and macro-geomorphic structure. Rainstorm is the basic condition causing the flood and waterlogging. Thus, the centre of rainstorm is consistent with one of flood and waterlogging. The macro-geomorphic structure （there is Qinghai-Xizang Plateau in west and Sichuan Basin in east） affects the activity of air current in the basin, so as to control the moisture source of rainstom and restrict the genesis of flood and waterlogging. The rainstorms in Sichuan Basin are frequent and rainstorm centres are concentrated in western basin. Both of them often converge into rainstorm runoff and cause flood and waterlogging. In addition,the flood and waterlogging is affected by drainage structure and forest cover rate,etc. |
| 学科主题 | 灾害学 |
| 语种 | 中文 |
| 公开日期 | 2011-09-08 |
| 源URL | [http://192.168.143.20:8080/handle/131551/3476]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） |
| 作者单位 | 中国科学院水利部成都山地灾害与环境研究所 |
| 推荐引用方式 GB/T 7714 | 贺素娣. 川江流域洪涝成因分析[J]. 山地研究,1991,9(2):99-104. |
| APA | 贺素娣.(1991).川江流域洪涝成因分析.山地研究,9(2),99-104. |
| MLA | 贺素娣."川江流域洪涝成因分析".山地研究 9.2(1991):99-104. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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