关键词: 知识溢出, 空间效应, 区域经济, SEM模型

Abstract: Knowledge spillovers are highly dependent on geographical proximity. the level of knowledge spillover determines the disparity of regional economic development. we empirically measure and analyze the knowledge spillover effect and its impact on regional economic growth based on Griliches-Jaffe Knowledge production function that includes three kinds of knowledge stock substitution variables of R & D expenditure, human capital and patent level by SEM model. The research shows that three knowledge stock variables have significant knowledge spillover effects. the Jacbos Porter effect has a strong positive impact on China's regional economic growth. Therefore, it is suggested that knowledge spillovers should be brought into full play in all regions, especially in less developed areas. we should improve urban agglomeration degree, regional human capital stock and increase R &D expenditure to enhance the role of knowledge spillover effect on regional economic growth.

Key words: knowledge spillover, spatial effect, regional economic, SEM model