JOURNAL OF NATURAL RESOURCES ›› 2017, Vol. 32 ›› Issue (2): 301-309.doi: 10.11849/zrzyxb.20160262

• Resource Evaluation • Previous Articles     Next Articles

Analysis on the Regional Type of Water-saving Society Based on Entropy Weight Method

ZHANG Xin-ying1, XIE Jian-cang1, LIU Jian-lin2, ZHU Ji-wei1, JIANG Ren-gui1   

  1. 1. State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area, Xi’an University ofTechnology, Xi’an 710048, China;;
    2. Shangluo University, Shangluo 726000, China
  • Received:2016-03-14 Online:2017-02-15 Published:2017-02-15
  • Supported by:
    National Natural Science Foundation of China, No. 51509201, 51479160 and 41471451; China Postdoctoral Science Foundation Funded Project, No. 2016M590964; Commonweal Project of Ministry of Land and Resources, No. 201411008; Water Conservancy Science and Technology Fund Project of Shaanxi Province, No. 2013SLKJ18. ]

Abstract: Regional type of water-saving social construction, involving all aspects of water conservancy development and social economic development, is a key of the current and future construction of water-saving society, therefore, it needs to be further explored in theory and practice. However, the focus and the objective of the construction of water-saving society are not clear. To clarify the focus and aim, the model for evaluating of the regional type of water-saving society was established by combining the entropy weight method and fuzzy synthetic evaluation method. Water-saving society regional type evaluation system was constructed from the aspects of water resources, social economy and water-saving potential which include 12 indicators. The entropy weight method was used to calculate the weight vector of regional type evaluation indices, and the different evaluation values of these three aspects were calculated with fuzzy comprehensive evaluation method. The regional types of water-saving society were obtained. Considering the natural conditions and social economic conditions, Shaanxi Province is divided into Guanzhong region, northern Shaanxi and southern Shaanxi. These three regions have great differences in natural geography, water resources, social and economic development level. According to the entropy method, the five main indicators with greater weights among the 12 indicators were years of average rainfall (ω = 0.242), water resources utilization (ω= 0.339), per capita income (ω= 0.291), recycling rate of industrial water (ω= 0.262) and agricultural water-saving evaluation (ω= 0.289). The regional division result indicated that Guanzhong is a region of “moderate water shortage-moderately developed-less potential”, northern Shaanxi is a region of “severe water shortage-more developed-great potential”, and southern Shaanxi is a region of “slight water deficiency-less developed-great potential”. Suggestions for different regions were given according to the characteristics of the regions. The main task of Guanzhong region is controlling water quantity, strengthening water pollution control construction, constructing water diversion project and improving industrial and agricultural water-saving technology. Northern Shaanxi should focus primarily on multiple water resource use, water saving in industry and agriculture, water resources protection and pollution control. The main work for Southern Shaanxi is increasing investment on water-saving construction, protecting water resources and improving water resources utilization efficiency.

Key words: entropy method, fuzzy evaluation, regional type, Shaanxi, water-saving society

CLC Number: 

  • TV213.4