Risk assessment of urban flood disaster in Jingdezhen City based on analytic hierarchy process and geographic information system

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Sun, D.C.^1,2 ; Huang, J.^1,2 ; Wang, H.M.^1,2 ; Wang, Z.Q.^1,2 ; Wang, W.Q.^1,2

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, Jiangsu, China^1

Institute of Management Science, Hohai University, Nanjing, Jiangsu, China^2

关键词: Analytic hierarchy process (ahp);    Assessment indicator;    Formation process;    Practical importance;    Small-scale floods;    Spatial-temporal distribution;    Urban flood disasters;    Urban flood risks;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012075/pdf
DOI  :  10.1088/1755-1315/82/1/012075

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The research of urban flood risk assessment and management are of great academic and practical importance, which has become a widespread concern throughout the world. It's significant to understand the spatial-temporal distribution of the flood risk before making the risk response measures. In this study, the urban region of Jingdezhen City is selected as the study area. The assessment indicators are selected from four aspects: disaster-causing factors, disaster-pregnant environment, disaster-bearing body and the prevention and mitigation ability, by consideration of the formation process of urban flood risk. And then, a small-scale flood disaster risk assessment model is developed based on Analytic Hierarchy Process(AHP) and Geographic Information System(GIS), and the spatial-temporal distribution of flood risk in Jingdezhen City is analysed. The results show that the risk decreases gradually from the centre line of Changjiang River to the surrounding, and the areas of high flood disaster risk is decreasing from 2010 to 2013 while the risk areas are more concentred. The flood risk of the areas along the Changjiang River is the largest, followed by the low-lying areas in Changjiang District. And the risk is also large in Zhushan District where the population, the industries and commerce are concentrated. The flood risk in the western part of Changjiang District and the north-eastern part of the study area is relatively low. The results can provide scientific support for flood control construction and land development planning in Jingdezhen City.