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

Xiaoyan Zhang, Juqin Shen, Fuhua Sun, Shou Wang, Shuxuan Zhang and Jian Chen
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Xiaoyan Zhang: College of Agricultural Science and Engineering, Hohai University, Nanjing 211100, China
Juqin Shen: College of Agricultural Science and Engineering, Hohai University, Nanjing 211100, China
Fuhua Sun: College of Agricultural Science and Engineering, Hohai University, Nanjing 211100, China
Shou Wang: College of Agricultural Science and Engineering, Hohai University, Nanjing 211100, China
Shuxuan Zhang: College of Agricultural Science and Engineering, Hohai University, Nanjing 211100, China
Jian Chen: College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

IJERPH, 2022, vol. 19, issue 13, 1-22

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.

Keywords: flood drainage right; synergetic theory; fuzzy best–worst method; Grey-TOPSIS (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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