中文摘要：

纸探索影响每个部门的水使用效率(WUE ) 的不同因素的贡献并且探索方法改进 WUE。一个新多扇区和多因素对数的吝啬的 Divisia 索引(MLMDI ) 分解方法被开发那以他们重要性的顺序由部门启用了 WUE 的鉴定进 11 个因素。到在 19 部门水平的北京的一个应用程序为在 2002-2007 之间的时期被做。在北京的 12th-Five-Year-Plan 期间建议的六项措施的水保存效果被估计。它被发现那，到减少外面转了并且农业产品和增加的水价格的出口将是顶支持水的二项很有效的措施保存。当直接的水使用结构的调整将以更少的重要方法作出贡献时，工业结构的调整将有否定效果。

英文摘要：

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.