高技术产业集聚对产业效率的影响

高技术产业集聚对产业效率具有一定的促进作用，但二者关系还受经济发展水平和对外开放程度的影响。基于1995—2016年我国内地多个省市高技术产业面板数据，构建交互项和面板门限回归模型，就经济发展和对外开放对高技术产业集聚与效率的影响进行实证检验。结果表明，高技术产业集聚与经济发展的交互项系数为负，与对外开的放交互项系数为正，对产业效率的影响存在显著的经济发展和对外开放门限效应。随着经济发展水平提升，高技术产业集聚对产业效率的正向影响会减弱，证明了威廉姆森假说在我国高技术产业中的存在性；随着对外开放程度提升，高技术产业集聚对产业效率的正向影响会增强，否定了开放性假说。

The Impact of High-tech Industry Agglomeration on Industrial Efficiency

High-tech industry agglomeration can promote industrial efficiency, but the relationship between the two is also affected by the level of economic development and the degree of opening to the outside world. Based on the panel data of high-tech industry in 29 provinces from 1995 to 2016, an interactive term and a panel threshold regression model were constructed to empirically test the impact of economic development and opening on relationship between the agglomeration and efficiency. The results show that the coefficient of interaction between agglomeration and economic development is negative, while that between agglomeration and opening up is positive. The impact of high-tech industry agglomeration on industrial efficiency has significant threshold effect from economic development and opening up. With the growing of the level of economic development, the positive impact of agglomeration on industrial efficiency will be gradually weakened, and the existence of Williamson Hypothesis in China's high-tech industry are verified. With the growing of the degree of opening up, the positive impact of agglomeration on industrial efficiency will be gradually strengthened, and the Openness Hypothesis are denied.