为了全面分析云贵两省水资源利用与经济发展之间关系的动态变化，本文利用脱钩弹性模型评价了云贵两省2001年-2010年间用水总量与生产总值、农业用水量与农业增加值、工业用水量与工业增加值之间的脱钩关系。结果表明：云贵两省水资源利用与经济发展脱钩关系整体较差；其中农业用水脱钩关系最差，两省均有50%的年份为强、弱耦合；两省工业用水脱钩关系分别有30%和20%的年份为强耦合；用水总量脱钩关系相对较好，两省均有70%的年份为强、弱脱钩。经济增长缓慢、用水效率偏低、用水结构不合理是造成脱钩关系不佳的主要原因。对比发现，西部大开发战略的深入对于改善水资源利用与经济发展间关系具有积极意义，使两省在“十一五”期间的脱钩关系较“十五”期间所好转。

Based on a systematic summary of the studies on decoupling theory and relevant methods, the decoupling elasticity model is was employed to study investigate the decoupling relationships (DRs)DRs of between total water use (TWU) and provincial GDP, agricultural water use (AWU) and agriculturale added value (AAV), as well asand industrial water use (IWU) and industrial added value (IAV), respectively, which were used in order to comprehensively to analyze the dynamic relationship between water use and economic development of Yunnan and Guizhou provinces during the period from 2001 to 2010, the first ten years for of the Great Western Development Strategy in China. The results indicated that the overall DR betweenof water use and economic development is highly undesirable in both of the two provinces. Specifically, among the three groups of DRs, the DR of AWU is was the worst with strong or weak coupling in half5 of the 10 years in the two provinces; the DR of IWU is slightly better with strong coupling respectively in 3 of the 10 years in Yunnan and in 2 of the 10 years in Guizhou; and while the DR of TWU is the best with strong or weak decoupling in 7 of the 10 years in the two provinces. It is believed that tThe slow economic growth, low water use efficiency, and as well as unreasonable water use structure are were the three main factors to cause the unfavorable decoupling relationships. The five-year based DR has been improved in the 11th FYP if compared with that in the 10th FYP, which means suggested the Great Western Development Strategy plays a positive role in coordinating the relationship between water use and economic development.

环境保护部战略环境评价“十二五”重大专项— “西南重点区域与行业发展战略环境评价”（ 环境保护部西部大开发重点区域和行业重大发展战略环境评价项目 1441302900002）