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Comprehensive assessment on landslides and debris flows in Sichuan Province based on GIS and RS
Language英语
Zhang, BL1; Zhang, SM2; Zhou, WC3
2007
Source PublicationDEBRIS-FLOW HAZARDS MITIGATION: MECHANICS, PREDICTION, AND ASSESSMENT
Author of SourceChen, CL ; Major, JJ
Pages491-500
meeting4th International Conference on Debris-Flow Hazards Mitigation - Mechanics, Prediction and Assessment
Conference DateSEP 10-13, 2007
Conference PlaceChengdu
CountryPEOPLES R CHINA
Publication PlaceROTTERDAM
PublisherMILLPRESS SCIENCE PUBLISHERS
Contribution Rank3
AbstractIntegrating the technology of remote sensing (RS) and geographic information systems (GIS), we built a comprehensive assessment information system for geo-hazards (landslides and debris flows). Locations of landslides and debris flows were established by manual interpretation after preprocessing RS images, and environmental factors were obtained through a method of GIS spatial analysis. Relationships between geo-hazard locations and each type of environmental factor were analyzed, and the factors closely related to geo-hazards were selected as the basic factors for a risk zonation. The values of the selected factors were evaluated through expert evaluation according to their relationships with geo-hazard locations, and the risk zonation was established using a method of analogy. Results indicated that the numbers of landslides and debris flows having areas >900 m(2) were 435 and 715, respectively, and that they were distributed mainly in the middle and southern parts of Sichuan Province. Slope, hypsography, lithology and rainfall were important conditions for both landslides and debris flows. Distance to a river and the degree of vegetation coverage were important for debris flows, but were of less importance for the occurrence of landslides. The regions with high risk degree were mainly in the south of Sichuan Province, especially near Panxi, and across a broad section of the middle of Sichuan Province. This research has done an effective exploration on an assessment of geological disasters using integrated RS and GIS technology, so as to provide a scientific basis for methods to prevent geological disasters.
Keywordlandslides and debris-flows comprehensive assessment Geographic Information Systems remote sensing Sichuan Province
ISBN978-90-5966-059-5
Indexed ByEI ; CPCI
Accession numberAccession number:20085211816276
WOS IDWOS:000267333300047
Citation statistics
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/33497
Collection成都山地所知识仓储(2009年以前)
Corresponding AuthorZhang, BL
Affiliation1.Shandong Normal University, Jinan, China;
2.Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China;
3.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhang, BL,Zhang, SM,Zhou, WC. Comprehensive assessment on landslides and debris flows in Sichuan Province based on GIS and RS[C]//Chen, CL, Major, JJ. ROTTERDAM:MILLPRESS SCIENCE PUBLISHERS,2007:491-500.
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