Water efficiency evaluation of a regional water scheme - Zhengzhou, China, using a water ecological-economic system (WEES) and based on emergy theory

被引：7
作者：
Wu, Zening [1 ]
Guo, Xi [1 ]
Guan, Xinjian [1 ]
Lv, Cuimei [1 ]
Wang, Huiliang [1 ]
机构：
[1] Zhengzhou Univ, Sch Water Conservancy & Environm Engn, 100 Kexue Rd, Zhengzhou 450001, Henan Province, Peoples R China
来源：
WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY | 2017年 / 17卷 / 03期
基金：
中国国家自然科学基金;
关键词：
emergy indices; water ecological-economic system; water efficiency; ELECTRICITY PRODUCTION; SUSTAINABILITY; FRAMEWORK; RECYCLE; INDEXES; RATIOS;
D O I：
10.2166/ws.2016.167
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
With the rapid development of society and the economy, the shortage of water resources and the deterioration of the water environment has resulted in restriction of the development of society and the protection of ecology and the environment. Consequently improving water efficiency is the key to realizing the sustainable utilization of water resources, and water efficiency evaluation is an important part of water resources management. Emergy theory aims to convert different dimensions of material and energy into solar energy, which can be analyzed and compared uniformly. Therefore, a new approach to assessing the economic efficiency of water resources, based on the water contribution to economic production, is evaluated using an emergy theory model. Water efficiency and system sustainability are explained by variables and emergy indicators in a regional water ecological-economic system (WEES) for Zhengzhou, China. The general status and economic efficiency of water resources in Zhengzhou are identified from the WEES. The average water contribution quantity and water contribution rate were 50.99 x 10(20) sej and 6.13% during 2000-2011, respectively. Results also show that industrial water efficiency is higher than that of agriculture. This quantification method will help decision-makers to adjust water prices and provide better water services.
引用
收藏
页码：674 / 687
页数：14
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