企业异质性、市场化与生产率分布

本文运用工业企业数据库估计了企业的全要素生产率，并对我国东中西部生产率分布进行了比较，统计检验发现东中西部生产率存在显著差异，差异有缩小的趋势。用回归模型进一步验证，发现区位优势对生产率存在显著溢价。接下来检验了生产率分布情况，发现企业生产率分布是右偏的，大量的企业生产率处于低水平范围。用伽马分布估计了省级层面的生产率分布参数，发现伽马分布的形状参数和尺度参数是逐渐变大的。接着用估计出来的参数构造省级面板数据，发现市场化程度与分布参数显著正相关，但对形状参数和尺度参数的影响程度不一样，这间接解释了我国区域间生产率差异为什么持续存在。

Firm Heterogeneity,Marketization and Productivity Distribution

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.