Abstract
The sustainability of regional water resources has important supporting data needed for establishing policies on the sustainable development of the social economy. The purpose of this paper is to propose an assessment method to accurately reflect the sustainability of regional water resources in various areas. The method is based on the relative entropy of the information entropy theory. The steps are as follows. Firstly, the pretreatment of the evaluation sample data is required, before the relative entropy of each standard evaluation sample and evaluation grade (SEG) is calculated to obtain the entropy weight of each evaluation index. After this, the entropy weighted comprehensive index (WCI) of the standard evaluation grade sample is obtained. The function relation between WCI and SEG can be fitted by the cubic polynomial to construct the evaluation function. Using the above steps, a generalized entropy method (GEM) for the sustainable assessment of regional water resources is established and it is used to evaluate the sustainability of water resources in the Pingba and Huai River areas in China. The results show that the proposed GEM model can accurately reflect the sustainable water resources in the two regions. Compared with the other evaluation models, such as the Shepherd method, Artificial Neural Network and Fuzzy comprehensive evaluation, the GEM model has larger differences in its evaluation results, which are more reasonable. Thus, the proposed GEM model can provide scientific data support for coordinating the relationship between the sustainable development and utilization of regional water resources in order to improve the development of regional population, society and economy.
Highlights
The second part of this paper introduces the main steps of the generalized entropy method (GEM) method and the two study areas of sustainable utilization of regional water resources
Taking the R4 Chenggu and R5 Yangxian regions of Hanzhong basin as examples, the a large development space in the Huai River basin, which is consistent with the literature research rationality of the GEM and Shepard method [15] (SP) evaluation results is analyzed
In order to improve the rationality and discriminability of the evaluation results related to the sustainable utilization of regional water resources, we used the relative entropy method in the information theory to establish a generalized entropy method (GEM) consisting of five steps and obtained the following conclusions
Summary
Regional water resource sustainability (RWRS) is a state in which water resources can be recycled and renewed naturally according to the technical and economic levels and social production conditions [1,2], so that the regions can constantly provide water for industrial and agricultural production, and protect people’s livelihood, as well as ecological and environmental factors [3,4,5].the assessment of RWRS is based on the comprehensive analysis of water resource characteristics, degree of guarantee, development and utilization of water resources in the basin, as well as the demand of water resources for industrial and agricultural production, people’s life and ecological environment [6,7,8]. Regional water resource sustainability (RWRS) is a state in which water resources can be recycled and renewed naturally according to the technical and economic levels and social production conditions [1,2], so that the regions can constantly provide water for industrial and agricultural production, and protect people’s livelihood, as well as ecological and environmental factors [3,4,5]. Using the grade of RWRS, the relationship between water resources, river basin economy and population can be revealed and water resources can be reasonably and fully utilized. This allows economic construction and water resources protection to be carried out simultaneously, while social and economic sustainable development can be promoted [9,10]. It is important to accurately evaluate and diagnose regional water
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