环保背景下制造业上市公司投资效率分析——来自京津冀地区的数据
Environmental Investment Efficiency of Modern Manufacturing Listed Companies in Beijing——Tianjin-Hebei Region under the Environmental Protection Background

以2011~2012年在国内A股市场上市的130家京津冀地区现代制造业上市公司为样本，通过Richardson模型对样本投资效率进行评分，并用内容分析法对企业环境信息披露程度评分，以此研究京津冀地区现代制造业上市公司环境信息披露对企业投资效率的影响。研究结果显示：环境信息披露程度评分与公司投资效率评分存在正相关关系，但相关系数较低，这表明企业环境信息披露行为对企业投资效率影响较小，且不会使得企业投资效率降低。
This paper took 130 modern manufacturing companies of Beijing-Tianjin-Hebei region in 2011 and 2012 in the A-share market as sample. We used Richardson Model to compute the sample companies'investment efficiency, and we used Content Analysis to evaluate the extent of environmental information disclosure of the samples. Then we analyzed the relationship between the two variables. The results showed that the degree of environmental information disclosure and corporate investment efficiency scores were positively correlated，but the correlation was low. It suggested that corporate environmental information disclosure had little effect on corporate investment efficiency, and did not decrease business investment efficiency.