关键词: 企业异质性, 伽马分布, 市场化

Abstract:

In this paper, we use the industry firm database to estimate the total factor productivity, and compare the productivity distribution among the eastern region, western region and middle region. We find that there exist significant gaps among these regions through the statistical test, but the gaps tend to be decreasing. We further find out that there exists productivity premium in different regions. Next we imply that the productivity distribution is right-skewed, the productivity of many firms is in low level. Through the gamma distribution we estimate the distribution parameters, and find that the shape and scale parameters are gradually bigger and bigger. Finally we construct panel data across provincial data, and get a conclusion that marketization gives a positive effect on the distribution parameters, but has different extent of influences on shape and scale parameters, which indirectly explain the sustained productivity gap among regions.

Key words: Firm Heterogeneity, Gamma Distribution, Marketization