中文摘要：

采用2005-2013年中国内地30个地区(除西藏外)27个工业行业数据,构建面板门槛模型,实证检验不同地区规模下,区域内多样化集聚(Jacobs外部性)、专业化集聚(MAR外部性)和企业竞争对区域创新能力的影响。结果显示,当地区规模较小时,多样化集聚、专业化集聚与企业竞争都对区域创新能力具有显著促进作用,但随着地区规模的日益增大,多样化集聚对区域创新能力的促进作用明显减小;专业化集聚、企业竞争与区域创新能力之间存在倒U型关系。

英文摘要：

This paper ,using the data of 27 Industries in China's 30 provinces from 2005 to 2013 ,builds panel threshold mod-el to analyze the impact of diversification agglomeration (Jacobs externalities) ,specialized agglomeration (M A R externali-ties) and enterprise competitiveness on the regional industry innovation ability for different regions empirical scale .The re-sults show that when regional scale is smaller ,diversification agglomeration ,specialized agglomeration and enterprise com-petitiveness are significantly positive correlated with regional industrial innovation capability ,but with regional scale increa-ses ,the promotion of diversification agglomeration on regional industrial innovation capability is significantly reduced .And there is inverted"U"shaped relationship between specialized agglomeration ,enterprise competitiveness and regional indus-trial innovation capability .