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利用我国制造企业2003～2008年数据,依次对我国制造业生命周期演化过程中员工、产值和资产规模分布的动态变化进行了观察。发现伴随生命周期演化,我国制造业企业平均规模先升后降,企业规模异质性和产业集中度不断上升。进一步实证检验还表明规模分布的变化幅度受产业中企业净进入率影响,企业进入越明显,企业平均规模变动越小,而规模异质性以及产业集中度的上升则越快。
Using the data of Chinese manufacturing enterprises from 2003 to 2008, the dynamic changes of the distribution of employees, output value and asset size in the evolution of manufacturing industry life cycle were observed in turn. It was found that with the evolution of life cycle, the average size of manufacturing enterprises in our country rose first and then dropped, and the scale of enterprise heterogeneity and industrial concentration continued to rise. Further empirical tests also show that the magnitude of the change in size distribution is affected by the net entry rate of enterprises in the industry. The more obvious the enterprises enter, the smaller the changes in the average size of the enterprises, and the faster the scale heterogeneity and industrial concentration rise.