基于DEA模型的林业上市公司经营效率研究

Research on the Operating Efficiency of Forestry Listed Companies Based on DEA Model

应用数据包络分析(DEA)模型,对20个沪深股市涉林行业上市公司的经营效率进行对比分析。研究结果表明:林业上市公司综合经营效率整体情况都比较好,部分综合效率为轻度或中度无效的林业上市公司当中,一部分受纯技术效率或规模效率的影响,一部分受两者共同影响,并存在规模报酬递增或递减的情况,深入分析可得到受纯技术效率影响的11家企业存在不同程度的投入冗余或者产出不足。因此,提出提高林业上市公司经营效率,应着力于提升林业上市公司资源配置效率、提高其技术创新水平和规模效率,并加强其内部控制体系建设或完善。

In this paper, Data Envelopment Analysis （DEA） model was applied to compare and ana- lyze the operating efficiency of 20 forestry listed companies in the stock markets of Shanghai and Shenz- hen. The statistic results showed that for most forestry listed companies, their operating efficiency reached DEA effective. However, the operating efficiency of several companies is mild invalid or mod- erate DEA invalid, which is due to the influence of pure technical efficiency or scale efficiency or both factors, and there exists increasing returns to scale or decreasing returns to scale. Through in-depth a- nalysis, it can be found that for the 11 companies which is under the influence pure technical efficien- cy, possible reasons are input or output insufficient redundancy with varying degrees. Therefore, it is proposed that to increase the operating efficiency of forestry listed companies, focus should be given to improve their efficiency of resource allocation, the level of technological innovation and scale efficien- cies as well as strengthen their internal control system construction or improvement.