Urban Agglomerations Eco-efficiency Analysis Based on Super-efficienty DEA Model:Case Study of Chang-Zhu-Tan "3 + 5" Urban Agglomeration
Circular economy is an important model of regional sustainable development, eco-efficiency approach is a comparatatively appropriate quantitative methods for studying circular economy. Regarding to Chang-Zhu-Tan ( Changsha-Zhuzhou-Xiangtan) "3 +5" urban agglomeration, this paper firstly establishes the input and output index system of eco-efficiency based on the DEA model, and calculates the efficiency in eight cities from 2005 to 2010 by using super-efficient DEA method, respectively. Then the dynamic comparative study of eco-efficiency has been done by using Malmquist-DEA model. The paper uses super-efficient DEA method to estimate the efficiency of the cities in 2005 -2010, and finally the Tobit model based on panel data has been developed to study the effect of the efficiency at different factors. The results showed the higher level of holistic eco-efficiency in urban agglomerations the larger differences among cities, Changsha is on the leading position of the provincial capital cities. By using Malmquist-DEA model analysis the results showed that the growth rates of total factor eco-efficiency TFP value are always larger than 1 , with an average annual growth rate of 12. 6% . The further decomposition of growth rates indicates that the technical progress is the major power to promote the growth rate of eco-efficiency, but the decline of the overall and pure technical efficiency is the bottleneck factor of restricting TPF ascension. At the last, the results of using factor analysis of eco-efficiency in provinces showed that the industrial structures, R&D strength had a significant positive impact to eco-effciency, but the introduction of foreign capitals has a negative effect to the eco-effciency. The development of technology is the internal driving force to a improvement of the ecological efficiency.
国家科技期刊平台
NSTL
万方数据
维普
