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Susceptibility and risk assessment of earthquake-induced landslides based on Landslide Response Units in the Subao River basin, China
Zhang, Jianqiang1,2; Cui, Peng1; Ge, Yonggang1; Xiang, Lingzhi1,2
Corresponding AuthorPeng Cui
2012
Source PublicationENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
EISSN1866-6299
Volume65Issue:4Pages:1037-1047
SubtypeArticle
AbstractGenerally, pixels are the basic unit for assessment of landslide susceptibility. However, even if the results facilitate the comparison, a pixel-based analysis does not clearly illustrate the distribution relationships. To eliminate this deficiency, the concept of the Landslide Response Unit (LRU) is proposed in this study, for which adjacent pixels that have similar properties are combined as a basic unit for susceptibility assessment. The Subao River basin, seriously impacted by the Wenchuan Earthquake, was selected as the study area, and three factors including slope gradient, slope aspect, and slope shape, which have a significant impact on landslides, were chosen to divide the basin into 25,984 LRUs. Then topographic, geologic, and distance factors were applied for the landslide susceptibility evaluation. The logistic regression method was used to establish the susceptibility assessing model by analyzing 2,000 susceptible LRUs and 2,000 un-susceptible LRUs. The model accuracy was defined in terms of the ROC curve value and the kappa value, 0.531 and 0.84, respectively. The susceptibility of landslides was divided into low, moderate, high, and very high in Subao River basin, and 73% of historical landslides and all four new landslides are in the highly susceptible zone and very highly susceptible zones. Finally, the LRUs with houses, farmlands, and roads prone to sliding and burial hazard were assessed separately. On the basis of considering the potential movement directions of the LRUs, the result found that 1,001 and 835 LRUs probably would be destroyed by slope sliding and landslide burial, respectively.
KeywordLandslide Susceptibility Landslide Response Unit Logistic Regression Wenchuan Earthquake
Subject Area灾害学
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s12665-011-1002-3
URL查看原文
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Geology ; Water Resources
Indexed BySCI
WOS KeywordLOGISTIC-REGRESSION ; HAZARD ; MODELS ; AREA
Language英语
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WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000299840100010
Funding OrganizationNational Key Fundamental Research Program of China (973)(2008CB425802) ; Chinese Academy Sciences(KZCX2-YW-Q03-5)
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/7353
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
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GB/T 7714
Zhang, Jianqiang,Cui, Peng,Ge, Yonggang,et al. Susceptibility and risk assessment of earthquake-induced landslides based on Landslide Response Units in the Subao River basin, China[J]. ENVIRONMENTAL EARTH SCIENCES,2012,65(4):1037-1047.
APA Zhang, Jianqiang,Cui, Peng,Ge, Yonggang,&Xiang, Lingzhi.(2012).Susceptibility and risk assessment of earthquake-induced landslides based on Landslide Response Units in the Subao River basin, China.ENVIRONMENTAL EARTH SCIENCES,65(4),1037-1047.
MLA Zhang, Jianqiang,et al."Susceptibility and risk assessment of earthquake-induced landslides based on Landslide Response Units in the Subao River basin, China".ENVIRONMENTAL EARTH SCIENCES 65.4(2012):1037-1047.
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