基于DEA的低碳产业上市公司投资效率实证研究

DEA-BASED EMPIRICAL RESEARCH ON INVESTMENT EFFICIENCY OF THE LISTED LOW CARBON INDUSTRY COMPANIES

以我国19家低碳产业上市公司2009年经验数据为样本,运用数据包络分析(DEA)的C2 R模型,对我国低碳产业上市公司的投资效率问题进行了实证研究.研究发现,我国低碳产业上市公司的整体投资效率较高,但多数投资纯技术效率并不理想;规模收益基本保持不变,但也存在递减的现象.我国低碳产业上市公司应结合自身的实际情况,改进投资纯技术效率,优化投资规模效率,从而做出更有效的投资决策.

Using a sample of 19 low carbon（LC） listed companies′experience data in 2009,based on the C2R model of DEA,the investment efficiency of LC industry companies in China was studied.The result shows that the whole level of investment efficiency of the listed LC companies are comparably high,but the efficiency of pure technical investment is not ideal;the scale profit basically remains unchanged with some decreases.The listed LC enterprises in our country should combine their own conditions to improve their efficiency of pure technical investment and optimize their scale investment,in order to realize more efficient investment decision-makings.