摘要
天然气市场的稳定、健康发展关系到国家能源安全战略目标的实现、企业巨额投资的回收以及天然气用户的使用。深入研究中国天然气市场现状,分析市场发展瓶颈,定量研究天然气企业的经营效率及影响因素,积极探索中国天然气市场的正确发展思路具有重要意义。文章根据2000-2011年间中国天然气工业企业上市公司的非平衡面板数据,采用三阶段DEA模型分析其技术效率(TE)、纯技术效率(PTE)和规模效率(SE)。研究发现,50%以上的样本公司均未达到有效前沿,而导致技术效率(TE)低下的原因主要是由于公司规模未处于最佳状态,即规模效率值(SE)偏低。纯技术效率值(PTE)整体较高,说明各天然气公司主管的经营管理整体效果较好,未发生重大决策失误,且该效率受外界环境因素影响较小。规模效率值(SE)整体波动则最为明显,且波动路径与技术效率(TE)值的波动路径几乎相同。
The stability and healthy development of natural gas market is closely related to the national energy security strategy, the enterprises＇ goal of huge investment of recycling, and utilization of the natural gas users. Researching the status quo of the natural gas market in depth, analyzing the market development bottleneck, studying quantitatively the enterprises＇ management efficiency and influencing factors, then actively exploring the correct development of natural gas market in China are of great significance. According to the gas industry enterprises＇ unbalanced panel data from 2000 to 2011, this paper used three-stage DEA model to analyze the companies＇ technical efficiency （TE）, pure technical efficiency （PTE） and scale efficiency （ SE）. Study found that more than 50% of the sample companies failed to meet the effective frontier, and the cause of low technical efficiency （TE） was mainly due to the company size which was not in the best state, that was scale efficiency （SE） was on the low side. The whole pure technical efficiency （PTE） was high, which showed that the operation and management in the gas companies were relatively good, without major decision-making errors, and this efficiency was less affected by the external environment factors. The volatility of scale efficiency （SE） was the most obvious, and the wave path were consistent with technical efficiency （TE）＇ s
出处
《重庆大学学报（社会科学版）》
CSSCI
北大核心
2013年第6期42-49,共8页
Journal of Chongqing University(Social Science Edition)
关键词
天然气企业
效率
三阶段DEA模型
natural gas companies
efficiency
three-stage DEA model
