Available at Įditorial Staff of Atlas of Guangdong Province (2003) Atlas of Guangdong Province (in Chinese). Disaster Profiles (2013) The OFDA/CRED international disaster database. University College London Press, LondonĬui P, Dang C, Zhuang JQ (2002) Flood disaster monitoring and evaluation in China. The results also can be used as references for the prevention and reduction of floods and other applications in the Dongjiang River Basin.Īgricultural Zoning Committee of China (1984) Technical regulations of land-use currency survey in ChinaĪlexander DE (1993) Natural disasters. These high-risk areas appropriately coincide with the integrated risk zoning map and inundation areas of historical floods, proving that the evaluation model is feasible and rational. The evaluation results show that high-risk areas are mainly located in regions that include unfavorable terrain, developed industries and dense population. To correct the one-sidedness of the single weighting method, a combination weight integrating subjective weight and objective weight is adopted based on game theory.
Thus, in this study, an assessment model based on FCE is adopted to evaluate flood risk in the Dongjiang River Basin. Fuzzy comprehensive evaluation (FCE), an effective method for solving random, fuzzy and multi-index problems, has led to progress in understanding this relation.
However, the uncertainty and nonlinear relation between evaluation indices and risk levels are always difficult points in the evaluation process. Flood-risk evaluation represents an essential analytic step in preventing floods and reducing losses. Flooding often occurs near rivers and low-lying areas, which makes such areas higher-risk locations. As a result of global warming, the occurrences of floods have increased in frequency and severity.