城市互联网发展对出口企业市场势力的影响研究

基于城市互联网基础设施、网民规模及互联网应用能力，综合构建了城市互联网发展指数，并利用2013-2018年959家中国A股制造业出口企业数据，匹配并测度了161个城市的互联网发展水平。研究表明，城市互联网发展通过“创新效应”、“成本效应”及两者的共同作用，显著提升了我国出口企业以价格加成衡量的市场势力，其中“创新效应”发挥的作用更大，进而开展了企业要素密集类型、所有制和所在地区的异质性检验。文章推进了对新型网络基础设施建设经济效应的理解，也为出口企业实现外贸高质量发展、加强互联网融合应用带来了启发。

Effect of Urban Internet Development on the Market Power of Export Enterprises

This paper studies the impact and mechanism of urban Internet development on the market power of export enterprises. Based on the urban Internet infrastructure, the scale of the Internet users and Internet application capacity, the urban Internet development index was comprehensively constructed, and the Internet development level of 161 cities was matched and measured by using the data of 959 Chinese A-share manufacturing export enterprises from 2013 to 2018. The research shows that the development of the urban Internet has significantly improved the market power of China's export enterprises measured by price addition through “innovation effect”, “cost effect” and their joint action, in which “innovation effect” plays a greater role. Then this study carried out the heterogeneity test of enterprise factor intensive type, ownership and location. This paper not only promotes the understanding of the economic effects of the construction of new network infrastructure, but also brings inspiration for export enterprises to achieve high-quality development of foreign trade and strengthen the integrated application of the Internet.