City takes pursuing high efficiency as the goal, and the measure of city efficiency is the important trend of study on the sustainable development of the city. The research of space-time difference features and drive mechanisms of Hunan Province city efficiency takes the 29 cities of Hunan province as the research objects, adopting the aspect of input - output elements of city space, is taking using the almost 13 years panel data from 2001 to 2013, and combining with the DEA model and Malmquist index. And the result shows： from 2001 to 2013, t...
