数字贸易对制造业全球价值链长度的影响效应

The impact of digital trade on the length of manufacturing global value chains

随着信息技术的快速发展,数字贸易促进了全球供应链的深度融合和扩展。基于2007—2018年60个国家的面板数据,通过主成分分析构建数字贸易衡量指标,验证数字贸易发展对制造业全球价值链长度的影响效应,并通过构建调节效应模型进一步验证金融发展水平对制造业全球价值链长度的调节作用。结果表明:数字贸易的发展延长各国制造业全球价值链长度,但其对全球价值链长度的影响呈现先降后升的“U”型关系;通过调节效应检验发现,金融发展水平对制造业全球价值链长度起到有效的调节作用。

With the rapid development of information technology,digital trade has promoted the deep integration and expansion of global supply chains.Based on panel data from 60 countries from 2007 to 2018,a digital trade measurement index was constructed through principal component analysis to verify the impact of digital trade development on the length of the global value chain in manufacturing.A moderating effect model was constructed to further verify the moderating effect of financial development level on the length of the global value chain in manufacturing.The results show that the development of digital trade extends the length of the global value chain in manufacturing industries of various countries,but its impact on the length of the global value chain shows a U-shaped relationship of first decreasing and then increasing;Through the moderation effect test,it was found that the level of financial development has an effective moderating effect on the length of the global value chain in the manufacturing industry.