数字经济如何影响城市出口产品质量——基于长三角地区数据的实证分析

How Does Digital Economy Affect the Quality of Export Products in Cities:Empirical Analysis Based on the Data of Yangtze River Delta

本文采用空间计量模型,以我国长三角地区41个地级市2006—2015年的面板数据为研究样本,研究了数字经济对城市出口产品质量的影响。结果表明,城市间出口产品质量总体上存在空间正相关性,数字经济会显著提升城市出口产品质量,该结论在稳健性检验中仍成立。机制检验表明,数字经济通过促进技术创新,提高进口中间品质量,推动出口产品结构高端化,进而提升城市出口产品质量。异质性分析表明,数字经济对非私营企业出口产品质量有显著提升作用;相对于其他城市而言,数字经济对特大及以上城市出口产品质量的提升作用更明显。

Employing the spatial econometric model,the panel data was utilied from 41 cities in the Yangtze River Delta spanning the years 2006 to 2015 as its research sample.The influence of digital economy on the quality of urban export products was analyzed.The results show that there is a positive spatial correlation between the quality of export products on the whole,and the digital economy can significantly improve the quality of export products in cities.This conclusion is still valid in the robustness test.The mechanism test shows that the digital economy promotes technological innovation,improves the quality of imported intermediate products,promotes the high-end structure of export products,and then improves the quality of urban export products.Heterogeneity test show that the digital economy can significantly improve the quality of export products of non-private enterprises,and compared with other cities digital economy plays obvious role in promoting the quality of export products in large and above cities.