A Factor Decomposing Model of Water Use Efficiency at Sector Level and Its Application in Beijing
A Factor Decomposing Model of Water Use Efficiency at Sector Level and Its Application in Beijing
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DOI：
10.1007/s11424-016-3127-7
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发表时间：
2016-04
影响因子：
2.1
通讯作者：
Xiuli Liu;G. Hewings;Xikang Chen;Shouyang Wang
中科院分区：
文献类型：
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作者：
Xiuli Liu;G. Hewings;Xikang Chen;Shouyang Wang
本文探讨了影响各部门水资源利用效率的不同因素的贡献，并探讨了提高水资源利用效率的途径。提出了一种新的多部门和多因素对数平均除数指数（MLMDI）分解方法，该方法可以根据各部门的重要性顺序将WUE识别为11个因素。在2002年至2007年期间，19个行业向中国政府提出了申请。对北京市“十二五”期间提出的6项节水措施的节水效果进行了评价。研究发现，减少农产品外转出口和提高水价是促进节水最有效的两项措施。直接用水结构调整的作用不大，而产业结构调整的作用则是负向的。
The paper explores the contribution of different factors affecting water use efficiency (WUE) of each sector and explores ways to improve WUE. A new Multi-Sector and Multi-Factors Logarithmic Mean Divisia Index (MLMDI) decomposition method was developed that enabled the identification of WUE by sector into 11 factors in terms of their order of importance. An application to Beijing at the 19 sector level was made for the period between 2002–2007. The water conservation effects of six measures proposed during the 12th-Five-Year-Plan of Beijing were assessed. It was found that, to decrease the transferred out and export of agriculture products and increasing water prices would be the top two most effective measures to promote water conservation. While the adjustment of direct water use structure would contribute in less significant way, the adjustment of industrial structure would have a negative effect.