小江流域泥石流堆积扇形成的制约因素及其特征
文献类型：期刊论文
| 作者 | 韦方强 ; 崔鹏
|
| 刊名 | 地理科学
 |
| 出版日期 | 2005 |
| 卷号 | 25期号:6页码:704-708 |
| 关键词 | 泥石流 堆积扇 流域腹地 堆积区 |
| 其他题名 | Restricting Conditions and Their Characteristics for Debris Flow Fans in Xiaojiang River Valley |
| 通讯作者 | 陈杰 |
| 合作状况 | 其它 |
| 中文摘要 | 在系统分析了各种因素对泥石流堆积扇形成影响的基础上，提出流域腹地中流域面积、沟床比降和堆积区主河河谷宽度及主河能量等因索对泥石流堆积扇发育的影响较大。结合TM卫星影象和1：5万地形图，解译了小江流域内泥石流堆积扇的范围。在此基础上，统计了流域腹地内两大重要条件一流域面积和沟床比降与堆积扇面积之间的关系。在小江流域，堆积扇的面积随流域面积的增加而增加，二者之间是正的指数关系；而堆积扇面积与沟床比降之间可用一个负的指数关系式表达。最后，堆积区特征对小江流域泥石流堆积扇的影响主要是其堆积空间限制了大型堆积扇，比如蒋家沟泥石流堆积扇的发展。 |
| 英文摘要 | The debris flow fans morphology is an integrated impact of its environment conditions. All of these conditions influencing the debris flow fans in the mountain area are sorted as inner-drainage basin and deposition basin. The way each condition influences the debris flow fans is analyzed systematically. Drainage basin area and channel gradient among the drainage factors, and width of main river deposition basin factors, are elicited as more strong factors influencing valley and main river energy among the the formation of debris flow fans. Using TM image and 1：50000 topographic maps, each debris flow deposited scopes are examined. Based on that, the relationship between the two most important factors of the inner-drainage basin and the debris flow fans is discussed. In the Xiaojiang River valley, the area of debris flow fans is basically increasing with the increasing of drainage area and a positive power function can be used to express the relationship; and a negative power function can be used to express the relationship between channel gradient and debris flow fan area. Lastly, the influence of depositional basin character on the Xiaojiang debris flow fans is mostly that the valid space confines the development of supper debris flow fans, like Jiangjia debris flow fan. |
| 分类号 | P642.23 |
| 资助信息 | 国家自然科学基金项目（批准号：40201009）和国家杰出青年科学基金项目（批准号：40025103） |
| 语种 | 中文 |
| 公开日期 | 2010-07-08 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/460]  |
| 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） 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 推荐引用方式 GB/T 7714 | 韦方强,崔鹏. 小江流域泥石流堆积扇形成的制约因素及其特征[J]. 地理科学,2005,25(6):704-708. |
| APA | 韦方强,&崔鹏.(2005).小江流域泥石流堆积扇形成的制约因素及其特征.地理科学,25(6),704-708. |
| MLA | 韦方强,et al."小江流域泥石流堆积扇形成的制约因素及其特征".地理科学 25.6(2005):704-708. |
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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