气候变化领域集成服务门户(CCPortal): Assessment of long and short-term flood risk using the multi-criteria analysis model with the AHP-Entropy method in Poyang Lake basin

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DOI	10.1016/j.ijdrr.2022.102968
	Assessment of long and short-term flood risk using the multi-criteria analysis model with the AHP-Entropy method in Poyang Lake basin
	Wu, Jinru; Chen, Xiaoling; Lu, Jianzhong
发表日期	2022
ISSN	2212-4209
卷号	75
英文摘要	China suffers the most serious loss of life and property with the most floods in the world. In this study, a multi-criteria analysis model with the combined analytic hierarchy process and Entropy weight method (AHP-Entropy) was proposed to assess the long and short-term flood risk in Poyang Lake basin, and results were verified by several flood events that happened on July 2020. Considering multi-factors of flood risk, six flood hazard factors (namely, maximum three-day rainfall (RMAX3), annual average rainstorm frequency (RF), annual average rainstorm amount (ARA), drainage density (DD), slope, elevation (DEM)) and four flood vulnerability factors (namely, population density (PD), land use pattern (LUP), GDP, normalized difference vegetation index (NDVI)) were selected and weights of them were derived from the AHP-Entropy method. Results show that PD (0.168), RMAX3 (0.163), LUP (0.146), GDP (0.129), and RF (0.111) play a vital role in the results of flood risk assessment. Spatially, the long and short-term flood risk maps are shown to have similar characteristics with correlation coefficient of 0.9056. Areas with high risk and very high risk account for 19.6% of the total area in the long-term flood risk map and increased to 22.2% in the short-term flood risk map. Overall, the northeastern parts of the Poyang Lake basin are more prone to floods and the flood risk gradually decreases from the Poyang Lake towards the surrounding areas. Verification of the results with Sentinel-1 synthetic aperture radar data shows that the flood risk assessment model has an accuracy of more than 50% in very high risk zones for floods, and more than 90% for high and very high risk floods, which showed that the presented model is reliable in flood risk assessment.
英文关键词	Flood risk assessment; Multi -criteria analysis model; AHP-Entropy; Poyang lake basin
语种	英语
WOS研究方向	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000793759200002
来源期刊	INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281116
作者单位	Wuhan University; Jiangxi Normal University
推荐引用方式 GB/T 7714	Wu, Jinru,Chen, Xiaoling,Lu, Jianzhong. Assessment of long and short-term flood risk using the multi-criteria analysis model with the AHP-Entropy method in Poyang Lake basin[J],2022,75.
APA	Wu, Jinru,Chen, Xiaoling,&Lu, Jianzhong.(2022).Assessment of long and short-term flood risk using the multi-criteria analysis model with the AHP-Entropy method in Poyang Lake basin.INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION,75.
MLA	Wu, Jinru,et al."Assessment of long and short-term flood risk using the multi-criteria analysis model with the AHP-Entropy method in Poyang Lake basin".INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION 75(2022).