投入数字化、市场竞争与进口质量  

Digitization of inputs,Market Competition,and import Quality

作　　者：马旭 田毕飞[2] 李金磊 张震霖 MA Xu;TAN Bifei;LI Jinlei;ZHANG Zhenlin

机构地区：[1]武汉大学经济与管理学院 [2]中南财经政法大学工商管理学院

出　　处：《国际贸易问题》2025年第3期44-59,共16页Journal of International Trade

基　　金：国家社会科学基金一般项目“中国企业对外直接投资的数字风险及防范研究”(24BJY101)。

摘　　要：本文构建一个包含竞争成本的异质性贸易模型,并基于中国投入产出表和海关数据,测度投入数字化水平和进口质量,实证分析中国投入数字化对进口质量的影响作用与路径机制。研究结果表明:投入数字化对进口质量有显著的提升效应,经过多种检验后结论仍然稳健;机制分析显示,投入数字化通过提高本土企业产出质量和增加进口来源国数量加剧进口产品市场竞争,进而提高进口质量;异质性分析显示,投入数字化的质量提升效应在沿海地区更为明显,对来自发达国家的产品以及资源密集型、低技术密集型和高技术密集型产品的影响更加显著。本研究为数字时代背景下推动贸易高质量发展和建设高水平对外开放格局提供了理论支撑与政策启示。This paper constructs a heterogeneous trade model incorporating competition costs.Based on China's input-output tables and customs data,it measures the level of input digitization and import quality,and conducts an empirical analysis of the impact and path mechanism of China's input digitization on import quality.The research results show that input digitization has a significant effect of improving import quality,and the conclusion remains robust after various tests;the mechanism analysis reveals that input digitization intensifies the competition in the import product market by improving the output quality of domestic enterprises and increasing the number of import source countries,thereby enhancing import quality;the heterogeneity analysis indicates that the quality improvement effect of input digitization is more evident in coastal areas,and it has a more significant impact on the products from developed countries,as well as resource-intensive,low-techintensive,and high-tech-intensive products.This study provides theoretical support and policy implications for promoting the high-quality development of trade and building a high-level pattern of opening up to the outside world in the context of the digital era.

关 键 词：投入数字化 市场竞争 进口质量 产出质量 

分 类 号：F74[经济管理—国际贸易]