地方政府支持与区域创新绩效之间的非线性关系研究——“倒U”还是“凹性”  

The Nonlinear Relationship between Local Government Support and Regional Innovation Performance——“Inverted U”or“Concavity”

作　　者：李璐 LI Lu(School of Political Science and Public Administration,China University of Political Science and Law,Beijing 100088,China)

机构地区：[1]中国政法大学政治与公共管理学院,北京100088

出　　处：《郑州航空工业管理学院学报》2023年第6期67-76,共10页Journal of Zhengzhou University of Aeronautics

摘　　要：利用2014-2020年中国31个省区市的面板数据,对地方政府支持与区域创新绩效之间的关系进行了实证检验。研究发现,虽然地方政府支持与区域创新绩效之间存在倒U型关系,但是绝大多数样本分布于倒U型曲线对称轴的左侧,只有极少数的样本分布于对称轴右侧;门限回归结果表明,倒U型关系很有可能是由边际效应递减产生的凹性所导致的。上述结论说明,目前我国地方政府支持力度与区域创新绩效之间是一种单调的凹函数关系,而不是先升后降的倒U型关系。该结论在经过一系列稳健性检验后仍然保持稳健。Based on the panel data of 31 provinces and cities in China from 2014 to 2020,this paper empirically tests the relationship between local government support and regional innovation performance.It is found that although there is an inverted U-shaped relationship between local government support and regional innovation performance,the majority of the samples are distributed on the left side of the inverted U-shaped curve symmetry axis,while only a few samples are distributed on the right side of the symmetry axis.Threshold regression results show that the inverted U-shaped relationship is probably caused by the concavity resulting from decreasing marginal effects.The above conclusions indicate that the relationship between local government support and regional innovation performance is a monotonous concave function,rather than an inverted U-shaped relationship.The conclusion remains robust after a series of robustness tests.

关 键 词：政府支持 区域创新 倒U型 凹性 门限回归 

分 类 号：F127[经济管理—世界经济]