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Research on Regionlization of Debris Flow Danger Degree Using GIS─A Case Study in the Upper Reaches of Minjiang River

Tang Jiafa (Southwest Jiaotong University Chengdu 610031)Xie Hong (Institute of Mountain Hazard and Environment, C. A. S. Chengdu 610041)  
Regionalization of danger degree is a comprehensive research on the debris flow problem. A case study using GIS technology is carried out in the upper reaches of Minjiang River,which is one of the heaviest disaster regions of debris flow. We use ARC/INFO to overlay different thematic maps into one comprehensive map, a mathematic model is built ac-cording to the AHP. Thus we can class the danger degree and get the division maps.
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