Application of AHP-entropy weight method in hazards susceptibility assessment in mountain town

doi:10.13474/j.cnki.11-2246.2021.0187

Abstract

Abstract: Many towns in the southwest China are faced with the threat of geological disasters such as collapse and landslide. Therefore, it is important to research hazards susceptibility in the mountainous towns. In this work, hazards susceptibility in Yangjiao town, Wulong district, Chongqing city is studied. The predisposing factors of geo-hazards are determined, then the weight of each assessment factor is determined by combining the AHP method and entropy weight method, and at last the susceptibility index is used in susceptibility zoning of the study area based on ArcGIS,and susceptibility zones are consistent with the geo-hazards distribution. The combination method used in this research firstly determines the subjective weight with the AHP method, and then revises the weight with the entropy method, which reduces the subjective influence to a certain extent, and quantifies the geo-hazards susceptibility more accurately and reasonably. The research ideas can provide reference for risk assessment and prevention of geological disasters in mountainous towns.

Key words: Yangjiao town, geological disaster, susceptibility assessment, AHP, entropy weights method

CLC Number:

P208

QI Yuna, WANG Lei. Application of AHP-entropy weight method in hazards susceptibility assessment in mountain town[J]. Bulletin of Surveying and Mapping, 2021, 0(6): 112-116.

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