长三角先进制造业集聚对区域全要素生产率的影响

The Impact of Advanced Manufacturing Agglomeration on Regional Total Factor Productivity in the Yangtze River Delta

基于2002-2021年中国长三角中心区25个城市的面板数据,运用固定效应模型和静态门槛模型,实证检验长三角地区先进制造业集聚对区域全要素生产率的影响机制与假说。从经济开放度的视角,探究长三角地区先进制造业集聚对区域全要素生产率的门槛效应,分析先进制造业集聚对区域全要素生产率的作用路径。基于固定效应模型的研究发现,长三角地区先进制造业集聚对区域全要素生产率的提高具有积极的促进作用。基于静态门槛模型的研究发现,长三角地区先进制造业集聚对区域全要素生产率提高具有显著的单门槛效应。当经济开放度小于或者等于门槛值时,先进制造业集聚对区域全要素生产率提高具有促进作用;当经济开放度大于门槛值时,先进制造业集聚对区域全要素生产率提高具有抑制作用。研究结论对于长三角地区各省市和各地级市在对外开放背景下优化先进制造业集聚、提高全要素生产率等措施具有一定的政策含义。

Based on the panel data of 25 cities in the central area of the Yangtze River Delta from 2002 to 2021,this paper empirically tests the mechanism and hypothesis that advanced manufacturing agglomeration affects regional total factor productivity in the Yangtze River Delta by using the fixed effect model and the static threshold model.From the perspective of economic openness,this paper explores the threshold effect of advanced manufacturing agglomeration on regional total factor productivity,and analyzes the action path of advanced manufacturing agglomeration on regional total factor productivity.Based on the fixed effect model,the research finds that advanced manufacturing agglomeration has a positive role in promoting regional total factor productivity.Based on the static threshold model,the research finds that advanced manufacturing agglomeration has a significant single threshold effect on regional total factor productivity.When the economic openness is less than or equal to the threshold,advanced manufacturing agglomeration has a promoting effect on the improvement of regional total factor productivity;When the economic openness is greater than the threshold,advanced manufacturing agglomeration has a inhibitory effect on the improvement of regional total factor productivity.The research conclusions have certain policy implications for the provinces and cities in the Yangtze River Delta to optimize advanced manufacturing agglomeration and improve total factor productivity under the background of opening up.