Allocation of Flood Drainage Rights in Watershed Using a Hybrid FBWM-Grey-TOPSIS Method: A Case Study of the Jiangsu Section of the Sunan Canal, China

Abstract

In this study, an FDR allocation scheme based on synergetic theory was designed to alleviate the drainage conflicts caused by the grabbing of flood drainage rights (FDR) in each region of the basin. An FDR allocation index system was constructed by employing synergetic theory and following the principles of safety, equity, efficiency, and sustainability. A new multi-criteria decision-making method, called FBWM-Grey-TOPSIS, was developed, which is based on the integration of the fuzzy best–worst method (FBWM) and Grey-TOPSIS. Among them, the FBWM method was used to distinguish the importance of subsystems and order parameters, and the Grey-TOPSIS method is applied to obtain the optimal FDR assignment results. Taking the Jiangsu section of the Sunan Canal as an example, the FDRs of the four regions in the basin were allocated. The results reveal that the proportion of FDRs obtained in descending order is Changzhou (32.69%), Suzhou (24.88%), Wuxi (23.01%), and Zhenjiang (19.42%). In addition, the performance of the proposed method is demonstrated by sensitivity analysis and comparative analysis with the existing methods. The methodology and research results presented in this paper can help governments and agencies achieve a scientific allocation of FDR in watersheds, thus promoting harmonious watershed development.

Research on Drainage Rights Allocation Based on Game Combination Weight-Improved Matter-Element Extension Model

“…In addition, the theories of water rights, sewage rights, carbon emission rights, flood control, and ecological compensation have been used to determine the five characteristics of drainage rights: compulsory, exclusion, tradability, variability, and urgency. Juqin Shen et al [10][11][12] constructed a model of drainage rights allocation using the ideas of game theory and synergy theory, environmental optimization-projection tracing technique, and Gini coefficient optimization entropy-TOPSIS method to determine the order of drainage rights allocation; Fang Wu [13] constructs a drainage rights allocation model based on the environmental Gini coefficient method that takes into account the interests of all parties; Dandan Zhang, Xiaoyan Zhang, Kaize Zhang, Fuhua Sun [14][15][16][17], etc. use a multi-objective optimization model, fuzzy optimal and inferior-TOPSIS method, harmony diagnosis, and PSR model to further expand the drainage rights allocation method and improve the drainage rights allocation system.…”