[1]李炫,杨本勇,范建容,等.基于流域单元的岷江上游泥石流危险性评价[J].水土保持研究,2015,22(06):335-339.
　LI Xuan,YANG Benyong,FAN Jianrong,et al.Assessment on the Hazard of Debris Flows in the Upper Min River Based on the Watershed Catchment-Unit[J].Research of Soil and Water Conservation,2015,22(06):335-339.
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基于流域单元的岷江上游泥石流危险性评价

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 22 期数: 2015年06期 页码: 335-339 栏目: 出版日期: 2015-12-28
Title:
Assessment on the Hazard of Debris Flows in the Upper Min River Based on the Watershed Catchment-Unit
作者:
李炫1,2, 杨本勇3, 范建容1, 张建强1, 李磊磊1,2
1. 中国科学院 水利部 成都山地灾害与环境研究所, 成都 610041;
2. 中国科学院大学, 北京 100049;
3. 国家测绘地理信息局 第三地理信息制图院, 成都 610100
Author(s):
LI Xuan1,2, YANG Benyong3, FAN Jianrong1, ZHANG Jianqiang1, LI Leilei1,2
1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water Resources, Chengdu 610041, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Third Geographic Information Cartographic Institute, State Bureau of Surveying Mapping of Geoinformation, Chengdu 610100, China
关键词:
泥石流; 岷江上游; 流域单元; 危险性评价
Keywords:
debris flow; the upper Min River; catchment-unit; hazard assessment
分类号:
P642.23
摘要:
泥石流的形成需要具备高陡的地形、充足的水源以及丰富而松散的固体物源三个基本条件，当山区小流域具备上述条件时，都有发生泥石流的可能。选取岷江上游区域作为研究区，以数字高程模型（DEM）作为基础数据，运用均值变点法和河网密度法结合遥感影像，实现研究区内小流域划分；针对影响泥石流形成的三个基本条件，以小流域作为评价单元，选取地层岩性、断裂密度、平均坡度、形状系数、沟道比降、24 h最大降雨量等六个评价指标，应用主成分分析法计算各因子的权重，实现岷江上游地区的泥石流危险性评价。分析结果表明，评价的结果能较好的反映出岷江上游的泥石流灾害分布情况，为该区泥石流灾害的防治提供了参考和依据。
Abstract:
There are three conditions of the debris flow on formation including topography, geology and precipitation. Where there are formation conditions of debris flow, there is possible for the debris flow occurrence. We chose the upper Min River as study area, took the digital elevation model(DEM) as the basic terrain data, used the mean change point method and drainage density method combined with the remote sensing image, and got the distribution of drainage area. And we calculated topographic factors of each drainage area, such as lithology, the density of fracture, average slope gradient, and degree of watershed development, channel gradient and 24-hour rainfall of each valley. Using the principal component analysis, we identified the potential sites of debris flows in the upper Min River. According to the analysis result, the evaluation results can reflect the distribution of debris flow of the upper Min River, which can provide guidance and reference for disaster prevention in this area.

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备注/Memo

收稿日期:2015-01-20;改回日期:2015-02-28。
基金项目:数字制图与国土信息应用工程国家测绘地理信息局重点实验室开放基金（DM2013SC01）；四川省应急测绘保障与地质灾害监测工程技术研究中心开放资助项目（K2014B011）；中科院重点部署项目（KZZD-EW-08-01）
作者简介:李炫(1991-),男,四川泸州人,硕士研究生,从事地理信息系统及遥感应用研究。E-mail:xuan121356@163.com
通讯作者:范建容(1969-),女,四川井研人,博士,研究员,从事山地生态与灾害遥感研究。E-mail:fjrong@imde.ac.cn

更新日期/Last Update: 1900-01-01