Research on Water Resource Efficiency in Provinces of China

Abstract

Based on the concept of agricultural total factor efficiency and the concept of total factor energy efficiency, this paper uses the DEA model based on input method to measure the total factor water resource efficiency. In the process of calculation, some factors of production, such as GDP, labor force and so on, are considered in order to make up the traditional method for the deficiency of considering single factor of water resources. This paper calculates the total factor water resources efficiency in 31 provinces of China in the year of 2009 and 2012, and analyses the spatial distribution and the change of water resources efficiency. The results indicate that the absolute number and relative proportion of agricultural water use are important influence factors of water resources efficiency.