中国对外直接投资逆向技术溢出效应经验研究——基于技术差距门槛视角

在考虑技术差距对逆向技术溢出效应影响的基础上,建立面板门槛模型,运用中国2003-2010年间的省际面板数据开展实证研究,研究结果显示:(1)技术差距在逆向技术溢出中确实存在影响,通过LM检验及自举法,技术差距对逆向技术溢出的影响存在两个门槛值,据此将我国按技术差距分为低、中、高技术差距三类区域;(2)我国对外直接投资在中、高技术差距区域存在逆向技术溢出,积极的逆向技术溢出效应主要存在于高技术差距区域,而中技术差距区域的技术溢出效应为负;(3)短期内,国内研发存量没有对技术进步产生促进作用,从长期来看,仍需进一步加强国内研发。

Empirical research on reverse technology spillover effect in China’s outward FDI-From the perspective of technology gap threshold

In considering the effects of technology gap on reverse technology spillover, the paper puts forward threshold effect model to analyze China's outward technology spillover. Main results can be drawn as follows. Firstly, there is a nonlinear relationship between technology gap and reverse technology spillover, and two threshold values for technology gap exist. Secondly, a positive reverse technology spillover exists in the high-level technology gap district. Meanwhile, a negative reverse technology spillover exists in the middle-level technology gap district. Finally, the results also show that Chinese domestic R&D stock doesn't prompt technology growth in the short term, but in the long term, we still need to strengthen the domestic research and development.