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随着国家对环境保护重视程度的不断提升,国家环境保护投资力度不断加大。然而我国的环保产业与发达国家相比尚不成熟。本文利用DEA理论中的BCC模型对环保产业20家上市公司进行经营绩效的研究,发现有些企业处于非DEA有效,而且各企业分别处于规模报酬不变、递增、递减的不同阶段,整个行业发展不平衡。
As the state attaches importance to environmental protection, its investment in environmental protection has been steadily increasing. However, China’s environmental protection industry is still not mature compared with the developed countries. In this paper, we use the BCC model of DEA theory to study the management performance of 20 listed companies in the environmental protection industry. We find that some enterprises are non-DEA effective, and all enterprises are in different stages of constant, increasing and decreasing scale returns. balance.