产业集中度与利润率的关系研究——来自钢铁产业的实证检验

针对当前较低的产业集中度已经成为制约我国钢铁产业发展的突出问题这一现实,文章以探讨产业集中度与利润率的关系作为切入点,运用向量自回归模型实证考察了我国钢铁产业的集中度与利润率之间的关系.研究结果显示,我国钢铁产业的集中度与利润率之间存在长期稳定的均衡关系,但在不同钢铁亚产业中两者之间的长短期因果关系以及相互影响的程度和方向却存在差异.我国为此应该采取相关对策,促进钢铁产业集中度的提高.

Toward the Relationship between Industrial Concentration and Profitability——an Empirical Test from Iron and Steel Industry

In view of the reality that low industrial concentration has become the explicit problem that constrains China's iron and steel industry,this article explores the relationship between industrial concentration and profitability and conducts an empirical analysis on this relationship for China's iron and steel industry with VAR model.The results show a long-term steady equilibrium between industrial concentration and profitability for China's iron and steel industry with differences in short-and-long-term causal relationships and the mutual impact of the extent and direction between industrial concentration and profitability in different sub-industries.Thus China should adopt measures to improve iron and steel industry concentration.