中文摘要：

基于2005-2012年38家低碳上市公司数据,本文运用随机前沿模型（SFA）测算各家上市公司的技术效率及其差异性特征,检验低碳企业技术效率的收敛特性。研究结果表明,我国低碳企业技术效率的整体水平偏低,均值仅为0.5027,企业间技术效率差异性显著并持续存在;低碳企业技术效率存在明显的σ收敛和β收敛,并且各企业也表现出明显的俱乐部收敛特征,其中σ收敛呈现出阶段性的波动特征。

英文摘要：

Based on the data of 38 listed companies with low carbon emissions from 2005 to 2012, the paper measured the technical efficiency of each listed company and differences characteristics with stochastic frontier analysis model, and examines the convergence properties of technical efficiency of low - carbon enterprise. The results show that ： the overall level of technical efficiency of low carbon enterprises is relatively low, the mean value is only 0. 5027, inter - enterpri- ses＇ technical efficiency differences are significant and persistent. Besides, the efficiency of carbon enterprise exist sig- nificant β convergence and apparent σ convergence, and various companies showed significant club convergence fea- tures, in which cr convergence characteristics showing periodic fluctuations.