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Quantitative Assessment of Regional Debris-Flow Risk: A Case Study in Southwest China
Liu, Guangxu1; Dai, Erfu2; Xu, Xinchuang3; Wu, Wenxiang2; Xiang, Aicun4
2018-07-01
Source PublicationSUSTAINABILITY
ISSN2071-1050
Volume10Issue:7Pages:21
Corresponding AuthorXu, Xinchuang(xuxc.08b@igsnrr.ac.cn)
AbstractThis paper uses a comprehensive risk assessment method to investigate the population risk of debris flows in Southwest China. The methodology integrates models from hazard, vulnerability literature and some empirical equations. The main steps include debris-flow disaster-hazard zoning, estimation of the frequency of the disaster, factor identification of population vulnerability, and calculation of the fragility rate. The results demonstrate that the most hazardous regions in Southwest China are primarily observed in the mountains around the Sichuan Basin, the border area between Sichuan and Yunnan Provinces, the eastern and southern regions of Yunnan Province, and the eastern area of Guizhou Province. The extremely high vulnerability zones are characterized by a fragility rate of 3.89 persons per 10,000 people. The comprehensive risk gradually increases from the southeast of the study area to the central region, reaching its highest value (more than 100 persons/year) on the Jiangyou-Zhaotong-Baoshan Line and decreasing thereafter to its lowest in the northwestern region. Extremely large-scale disasters are the major factor of casualties. Appropriate risk management and mitigation solutions should be comprehensively determined based on the combination of debris-hazard levels and fragility rates in the hazardous regions.
Keyworddebris flows fragility rate risk similarity-based method Southwest China
DOI10.3390/su10072223
WOS KeywordNATURAL DISASTERS ; HAZARD ; SUSCEPTIBILITY ; VULNERABILITY ; SICHUAN ; BASIN ; MODEL
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of China (NSFC)[41561020] ; National Basic Research Program of China (973 Program)[2012CB955403] ; Gannan Normal University
Funding OrganizationNatural Science Foundation of China (NSFC) ; National Basic Research Program of China (973 Program) ; Gannan Normal University
WOS Research AreaScience & Technology - Other Topics ; Environmental Sciences & Ecology
WOS SubjectGREEN & SUSTAINABLE SCIENCE & TECHNOLOGY ; Environmental Sciences ; Environmental Studies
WOS IDWOS:000440947600114
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54355
Collection中国科学院地理科学与资源研究所
Corresponding AuthorXu, Xinchuang
Affiliation1.Gannan Normal Univ, Sch Geog & Environm Engn, Ganzhou 341000, Peoples R China
2.Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Hubei Univ Sci & Technol, Sch Resources & Environm Sci & Engn, Xianning 437100, Peoples R China
4.Gannan Normal Univ, Sch Educ Sci, Ganzhou 341000, Peoples R China
Recommended Citation
GB/T 7714
Liu, Guangxu,Dai, Erfu,Xu, Xinchuang,et al. Quantitative Assessment of Regional Debris-Flow Risk: A Case Study in Southwest China[J]. SUSTAINABILITY,2018,10(7):21.
APA Liu, Guangxu,Dai, Erfu,Xu, Xinchuang,Wu, Wenxiang,&Xiang, Aicun.(2018).Quantitative Assessment of Regional Debris-Flow Risk: A Case Study in Southwest China.SUSTAINABILITY,10(7),21.
MLA Liu, Guangxu,et al."Quantitative Assessment of Regional Debris-Flow Risk: A Case Study in Southwest China".SUSTAINABILITY 10.7(2018):21.
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