关键词: 社会信任 , 产业协同集聚 , 交易成本

Abstract: Introducing social trust into the Free Capital Vertical Linkage model (FCVL), this paper constructs a model of social trust and industrial coagglomeration to study the innermechanism that social trust causes industrial coagglomeration. Theoretical analysis shows that the higher the degree of social trust is, the higher industrial coagglomeration level will be, and the greater economic contribution industrial coagglomeration will make. By pairing 19 kinds of manufacturing industry data in the inputoutput table of 30 provinces and cities in China, the above conclusion is verified though gradually adding control variables and overcoming endogeneity. Considering the differences in development level, this paper does regional heterogeneous study and finds that the marginal effect of social trust on industrial coagglomeration in eastern areas and highermarketization areas is significantly higher than that in middle and west areas and lowermarketization areas. Therefore, raising the level of regional social trust to promote industrial coagglomeration and highquality regional economic growth, especially the eastern areas and highermarketization areas, should be one of the priorities of local government.

Key words:  social trust , industrial coagglomeration , transaction cost