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Water 2018, 10(7), 920; https://doi.org/10.3390/w10070920

Calculation of Water Resource Value in Nanjing Based on a Fuzzy Mathematical Model

1
Business School, Hohai University, Nanjing 211100, China
2
School of Public Administration, Hohai University, Nanjing 211100, China
*
Author to whom correspondence should be addressed.
Received: 13 June 2018 / Revised: 6 July 2018 / Accepted: 9 July 2018 / Published: 11 July 2018
(This article belongs to the Section Urban Water Management)
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Abstract

In view of the complexity and uncertainty of water resources, this paper chooses an evaluation index system of 13 indicators based on the fuzzy mathematics model in three aspects: water resources, water quality and socioeconomic status. The entropy method was used to determine the weight of the index, and the water resource value of Nanjing in 2011–2015 was dynamically evaluated. The results show that the price of water resources in Nanjing from 2011 to 2015 rose from 3.43 yuan/m3 to 5.94 yuan/m3, showing a clear upward trend, but the corresponding price of water expenditure accounted for a proportion of disposable income from 2.27% to 1.87% during the same time period. This counterfactual trend proves that the current water price in Nanjing is relatively low and is not conducive to the efficient use of water resources. Given the fact that water prices have larger room for growth, the city government could initiate the reform of water pricing system and re-enact the water fee collection standards to achieve optimal allocation of water resources and sustainable development. View Full-Text
Keywords: entropy method; fuzzy comprehensive evaluation; water resource value; Nanjing entropy method; fuzzy comprehensive evaluation; water resource value; Nanjing
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Jia, Y.; Shen, J.; Wang, H. Calculation of Water Resource Value in Nanjing Based on a Fuzzy Mathematical Model. Water 2018, 10, 920.

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