中文摘要：

本文基于PCA-DEA的组合模型评价长江经济带11省市生态效益,并对长江经济带生态效率的影响因素进行分析。研究结果显示：长江经济带11省市平均生态效率低于全国平均水平且存在地区差异,并表现出扩大的趋势;产业结构、外商投资水平、地区就业人口总数对生态效率的提高有反向作用,高技术产业主营业务收入、城镇化率、能源投资、能源消费总量、地区生产总值对生态效率的提高有着正向作用。因此,应坚持生态优先、绿色发展的总体战略定位,坚持改革创新,将重点放在经济结构的转型升级方面,促进上中下游协同发展,重点提升上游省市生态效率。

英文摘要：

In this paper, Yangtze River economic belt 11 provinces＂ eco-efficiency are analyzed based on the combination of PCA-DEA evaluation model; σ eonvergenee method and absolute β convergence method are used to test the eco-effieien- cy＇s convergence; Tobit regression model is used to analyze those factors which affect the eco-efficiency of Yangtze River E- conomic Belt. The results show： the average eco-efficieney of the Yangtze River economic belt＇s ll provinces is lower than the national average; there are regional differences in the Yangtze River economic beh ll provinces~ eco-efficiency, and thm~ is a tendency to expand; the industrial structure, the level of foreign investment, the total number of employed population have reverse effects to eeo-efficieney ; high-tech industry＇s main business income, urbanization rate, energy investments, the total energy consumption and GDP ecological efficiency have a positive effect. Therefore, the Yangtze River economic belt 11 provinces should insist on putting ecologieal at the priority position, insist on the way of green development, insist on retorm and innovation, focusing on the transformation and upgrading of economic structure, promoting the coordinated development of the whole Yangtze River Economic Belt, focusing on enhaneing the eeo-efficieney of the upstream provinces.