基于面板数据的中国供电行业规模收益分析  

The Analysis of Return to Scale in Electricity Supply Industry of China Based on Panel Data

作　　者：任宇宁[1] 赵国庆[2] 

机构地区：[1]中国人民大学 [2]日本京都大学

出　　处：《统计研究》2007年第4期63-68,共6页Statistical Research

基　　金：中国人民大学"985工程"建设项目"中国经济研究哲学社会科学创新基地"的成果之一

摘　　要：公共事业企业的规模收益关系到政府监管策略的选择。近年有关中国电力行业运营规模与效率的研究主要集中在电力需求和电价调整方面。本文利用具有面板数据模型形式的成本函数,分析资本和劳动力要素投入对企业规模收益及经营效率的影响程度。主要结论是,电力供应机制的运行受劳动力因素的制约较大,企业规模收益呈递增趋势;劳动力价格对成本的长期影响明显大于短期。Returns to scale in public utility enterprises affect how the government regulates the industry. Recently, the study of scale and efficiency for electricity industry in China focused on electricity demand and price adjustment. The paper employs eost function of panel data model to analyze how capital and labor affect returns to scale and efficiency. The conclusions are as follows, the system of electricity supply industry depends more on labor than on capital, and returns to scale in enterprises are increasing; price of labor can affect cost, and the long-term effects are more obvious than short-term effects.

关 键 词：C-D成本函数 面板数据模型 规模收益 

分 类 号：C812[社会学—统计学]