THE SPATIAL-TEMPORAL DIFFERENCE OF WATER RESOURCES UTILIZATION RELATIVE EFFICIENCY AND INFLUENCE FACTORS IN CHINA
基于2002-2006年中国31个省级行政区的数据，用数据包络分析法计算水资源利用相对效率，分析其时空分布差异，并探讨冗余率的影响因素，为水资源政策制定提供参考。
Watershortage has become a majorconstraint factorforthe development of economy,and the effective solution is to increase water utilization efficient.According to the datum of thirty-one administerial region of China from 2002 to 2006,this paper selected the following index as inputs,which were domestic water usage,productive water usage,labor,fixed asset investment,and selected gross domestic product as output,then the traditional data envelopment analysis method was applied to calculate the scale redundancy ratio,and the revised data envelopment analysis method was applied to calculate the technique redundancy ratio,on this base,the water utilization relative efficiency was obtained,and the characteristics of spatial-temporal distribution difference was discussed.The analysis of the spatial-temporal difference may provide references for water resources reasonable utilization.Finally,this paper applied the method of canonical correlations analysis to the affecting factors of water redundancy ratio.the results of this paper may provide theory foundation for the constitution of water policies.