贸易进口和外商直接投资空间溢出效应研究

Spillover Effects of Regional Import and FDI in China

本文根据我国28个省市区1987-2010年的面板数据,利用DEA方法计算了我国各省市区经济的全要素生产率,并将之分解为技术效率和技术进步,分析贸易进口和外商直接投资对生产率的地区内和地区间溢出效应。结果表明:贸易进口和外商直接投资对省际全要素生产率有显著的地区内和地区间溢出效应;两者对生产率产生溢出效应的机制是不同的,贸易进口通过影响技术进步从而对省际全要素生产率产生正向影响,而外商直接投资则是通过影响技术效率对省际全要素生产率产生促进作用;贸易进口对生产率的溢出效应时效性较短,而外商直接投资的溢出效应时效性较长。

Based on provincial panel data of China from 1987 to 2010, this paper applies the DEA method to calculate the provincial total factor productivity, decomposes it into technological efficiency and technology progress, and analyzes the inter-regional and intra-regional spillover effects of goods import and foreign direct investment respectively. Our study shows that both spillover effects are significant and positive. However, the two effects work in different ways： the positive spillover effect of goods import primarily comes from the channel of technology progress, while the one of foreign direct investment from technological efficiency. Moreover, the spillover effect of foreign direct investment lasts longer than the one of goods import.