[1]宁娜,田黎明,张鹏,等.甘肃南部武都地区泥石流危险性评价[J].山地学报,2013,(05):601.
　NING Na,TIAN Liming,ZHANG Peng,et al.The Hazards Assessment of Debris Flow in Wudu of Southern Gansu，China[J].Mountain Research,2013,(05):601.
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甘肃南部武都地区泥石流危险性评价()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2013年05期
页码:
601
栏目:
山地灾害
出版日期:
2013-01-01

文章信息/Info

Title:
The Hazards Assessment of Debris Flow in Wudu of Southern Gansu，China
作者:
宁娜;田黎明;张鹏;齐识;马金珠;
1兰州大学资源环境学院，甘肃 兰州 730000； 2兰州大学西部环境教育部重点实验室，甘肃 兰州 730000
Author(s):
NING Na; TIAN Liming; ZHANG Peng; QI Shi; MA Jinzhu
1.College of Earth and Environmental Sciences，Lanzhou University，Lanzhou 730000，China；
2. Key Laboratory of Western China's Environmental Systems (MOE)，Lanzhou University，Lanzhou 730000，China
关键词:
泥石流; 危险性评价; 信息量法; 敏感性分析法
Keywords:
debris flow; hazards assessment; information method; Sensitivity analysis method
分类号:
P642.23
文献标志码:
A
摘要:
泥石流的发生受控于多种因子,而各因子属性段对泥石流的发生起到不同的作用。以甘肃南部武都地区为研究区,考虑到地震扰动影响并结合当地的地质环境条件,选取了高程、坡度、岩性、土地利用类型、滑坡点密度、地震因子、地质构造缓冲区及归一化植被指数(NDVI)等8个评价因子进行危险性评价。而后基于信息量模型和敏感性分析法对各影响因子属性类进行计算分析,得到各属性类的量化值。最后通过叠置分析,得到泥石流灾害危险性分区。结果表明,在中度、高度及极高度危险区内,信息量模型中分布的泥石流面积占研究区泥石流总面积的百分比为22.5%,24.7%,37.2%,而敏感性模型中占到的比例分别为25.5%,28.1%和36....
Abstract:
The debris flow hazard is controlled by a lot of factors，while each aspect of the factors has different effect on the occurrence of the debris flow. In this paper，the Wudu district is introduced to be studied. And taking into account the effects of seismic disturbances combined with the local geological environment conditions，we ultimately select elevation，slope，lithology，land use，landslides density，seismic，cumulative distance from fault interface and normalized NDVI(normalized difference vegetation index) for debris flow hazards assessment. Then，the information method and sensitivity analysis method are applied to calculate all aspects of the factors. And at last，the debris flow hazards zoning map was got by overlay analysis. The results show that in moderate danger zone，highly danger zone and extremely highly dangerous zone，the debris flow area accounts for 22.5%，24.7% and 37.2% of the total debris flow area respectively by information method and accounts for 25.5%，28.1% and 36.4% by sensitivity analysis method. All in all，above moderate danger zone contains 90% of the debris flow by sensitivity method which large than the 84.4% of the information method. Thus it can be seen，sensitivity analysis method combined with GIS technology for the debris flow hazards assessment has higher accuracy and it can be a reference to the practical application in the future.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2013-03-13；改回日期(Accepted)：2013-04-03。
基金项目(Foundation item)：国家科技支撑计划项目（2011BAK12B05）资助。[Supported by National Science and Technology Pillar Program（2011BAK12B05）.]
作者简介（Biography）：宁娜(1989-),女,汉族,甘肃武威人,硕士研究生,主要从事水文过程与泥石流灾害方面的研究。[Ning Na,female,born in Wuwei,Gansu,master graduate student, majoring in the research on hydrological process and debris flow hazards assessment.]E-mail:ningn11@lzu.edu.cn ,Tel:15002585512
更新日期/Last Update: 1900-01-01