| 岷江上游和中游几个河段的下蚀率对比研究 |
| |
| 引用本文： | 高玄彧,李勇.岷江上游和中游几个河段的下蚀率对比研究[J].长江流域资源与环境,2006,15(4):517-521. |
| |
| 作者姓名： | 高玄彧 李勇 |
| |
| 作者单位： | 1. 成都理工大学,四川,成都,610059;太原师范学院,山西,太原,030012
2. 成都理工大学,四川,成都,610059 |
| |
| 基金项目： | 国家自然科学基金项目(40372084)，中国教育部优秀青年教师资助计划项目，美国国家自然科学基金项目(EAR-980-34840)资助 |
| |
| 摘 要： | 岷江中、上游从我国地势的第一阶梯穿入第二阶梯，是中国西部地质、地貌、气候的陡变带，因而研究其下蚀率具有重要的理论和实际意义。利用河流阶地与阶地形成年龄间的线性关系分别研究了岷江上游和中游几个河段的河流下蚀率，通过计算分别得出岷江上游和中游几个河段的河流下蚀率，在此基础上对岷江上游和中游的几个河段的下蚀率作了对比，得出岷江上游几个河段的年平均下蚀率（1.40 mm/a）大于岷江中游几个河段的年平均下蚀率（1.08 mm/a）的结论，并分析了产生这种现象的原因。
|
| 关 键 词： | 长江支流 岷江上游和中游河段 河流下蚀速率 |
| 文章编号： | 1004-8227（2006）04-0517-05 |
| 收稿时间： | 2005-10-20 |
| 修稿时间： | 2005-11-16 |
COMPARISON ON THE INCISION RATE IN THE UPPER AND MIDDLE REACHES OF MINJIANG RIVER |
| |
| GAO Xuan-yu,LI Yong.COMPARISON ON THE INCISION RATE IN THE UPPER AND MIDDLE REACHES OF MINJIANG RIVER[J].Resources and Environment in the Yangtza Basin,2006,15(4):517-521. |
| |
| Authors: | GAO Xuan-yu LI Yong |
| |
| Abstract: | Minjiang River is a very important tributary of Changjiang River and is located in eastern margin of Tibetan Plateau which is an important constitute of geotectonic units of China.It is also a changed area of geology,geomorphology and climate.The authors according the linear relation between river terrace and river incision studied the incision rate of Minjiang River's upper and middle reaches,and reached a conclusion that the average incision rate of Minjiang River's upper reaches is 29.62% larger than the average incision rate of Minjiang River's middle reach.The reasons are the difference in the channel gradients of Minjiang River's upper reaches and middle reaches,and the elevation movement of earth crust which is different under the river channel. |
| |
| Keywords: | a triburary of the Changjiang River the upper and middle reaches of Minjiang River river incision rate |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《长江流域资源与环境》浏览原始摘要信息 |
| 点击此处可从《长江流域资源与环境》下载免费的PDF全文 |
