Abstract
The notion of a ‘Water-saving society’ may help China achieve sustainable development and high-quality development. In this paper, the concept of water resources development and utilization level is discussed from the perspective of a water-saving society, and an evaluation index system including 33 indicators is constructed. This paper takes the evaluation of water resources development and utilization level of Jingyu County from 2009 to 2018 as an example to verify the rationality of the indicator system of this study. Additionally, by changing the sensitivity analysis method of indicator weights, the indicators with greater influence on the evaluation results are screened to reduce the uncertainty of too many indicators and low correlation. The results show that the evaluation value of water resources development and utilization level in Jingyu County from 2009 to 2018 was improved from V to II, and the improvement of industrial and domestic water use efficiency and effectiveness improved the water resource problems in the study area. Sensitivity analysis showed that the sensitivity parameters are the degree of water resources development and utilization (8.7%), water consumption per CNY 10,000 of industrial value added (11.2%), water consumption per CNY 10,000 of GDP (9.3%), leakage rate of the urban water supply network (8.4%), per capita water resources (10.1%), per capita COD emissions (9.3%) and urbanization rate (8.2%).
Highlights
Water is one of the most important natural resources on which living things depend; the survival and development of human society cannot be achieved without the support and use of water resources [1]
While the increase in the amount of water used per CNY 10,000 of industrial value added (D11), the proportion of industrial water use (D12) and the leakage rate of the urban water supply network (D17) lead to a significant decrease in the efficiency of water resources exploitation
The results show that the sensitivity parameters are D3(development and utilization degree of water resources), D11(water consumption of CNY 10,000 industrial added value), D16(water consumption per CNY 10,000 GDP), D17(leakage rate of urban water supply network), D21(water resources per capita), D28(per capita COD emission) and D31(urbanization rate)
Summary
Water is one of the most important natural resources on which living things depend; the survival and development of human society cannot be achieved without the support and use of water resources [1]. Bongsu et al analyzed the water use and awareness of water conservation in Daejeon, Korea [4]. Yurina et al analyzed the local applicability of water-saving devices by investigating the use of water-saving devices and the amount of water saved in 134 households in Hanoi, Vietnam [5]. Da Silva [6] analyzed water conservation in the city of Karuru, Brazil, by projecting the population in 2015 and the population in 2035 to derive per capita water use, based on the calculated amount of water savings and the cost of water-saving devices, and the impact of water-saving device installation on economic development and the environment. Restu analyzed the economic, social and ecological benefits of water resources in a city in Indonesia and quantified the economic, social and ecological benefits using electricity prices, sustainability and vegetation cover [7]
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