环境规制会影响产业集中度吗?:一个经验研究

作为刻画产业结构的重要指标之一——产业集中度,一直受到国内外学者的广泛重视,但鲜见有学者研究环境规制会对产业集中度带来何种影响。为了对此进行研究,本文以我国工业部门1996-2006年的数据为样本,首先计算出产业集中度(CR4和CR8)水平,并运用面板数据分析方法,在控制相关变量的基础上,研究了环境规制对产业集中度带来的影响,得到以下结论:(1)在不考虑其他控制变量时,环境规制变量对产业集中度产生不显著的正向促进作用,但随着控制变量的逐步引入,环境规制变量的显著性水平逐步提高,模型总体拟合效果趋于优化;(2)同时,进入退出壁垒、利润率水平、经济干预政策和规模经济程度四个控制变量也会对产业集中度产生显著的正向推动作用。因此,适度强化环境规制水平,不仅有利于保护环境,优化资源配置,淘汰落后产能,解决结构性产能过剩,而且有利于提升产业集中度,增强我国企业在国际上的竞争力。

Can Environmental Regulation Influence Industrial Concentration? An Empirical Study

Industrial concentration,as one of the important indexes of depicting the industrial structure,has got wide attention from scholars both at home and abroad,but few scholars have analyzed whether environmental regulation could affect industrial concentration.In order to analyze this issue,this paper firstly calculated the industrial concentration(CR4 and CR8) levels based on the data of China’s industrial sectors between 1996-2006,then used panel data method to analyze environmental regulation’s influence on industrial concentration with relative variables in control,and the results show that:(1) Without taking into consideration other control variables,environmental regulation variable’s promoting effects on industrial concentration is not significant,but with the control variables being introduced gradually,the significant level is improved,and the overall fitting effects of the model tends to be optimized;(2) Meanwhile,enter-exit barriers,profitability,economic intervention policy and scale economy degree as four control variables,also having significant promoting effects on industrial concentration.Therefore,moderately increasing the intensity of environmental regulation can not only protect the environment,eliminate backward production capacity and solve the structural excess capacity,but also improve industrial concentration and enhance our enterprises’ competitive power around the world.