【摘要】 数字贸易作为传统贸易的拓展和延伸，能否依托数字化优势，以新业态持续释放贸易的绿色发展潜能，对提升绿色全要素生产率具有重要意义。选取2011—2022年我国275个城市面板数据，将国家跨境电子商务综合试验区建设视为准自然实验，采用多期双重差分模型，系统分析数字贸易对城市绿色全要素生产率的影响。研究表明：数字贸易能够显著赋能城市绿色全要素生产率提升，且主要通过优化资源配置和产业结构升级两个作用路径来实现。同时，该影响效应在市场化水平较高以及数字基础设施较完善的城市中尤为显著。进一步地，相较于传统贸易，数字贸易的网络关联性增强了其对邻近地区的空间溢出效应，而其知识和技术密集性特征使得数字贸易在很大程度上依赖于创新资源，存在创新型城市与数字贸易之间的联动效应。更多还原

【Abstract】 As an extension and expansion of traditional trade,digital trade presents an important research topic:can it leverage its digital advantages to continuously unlock the green development potential of trade through new business models,thereby enhancing green total factor productivity?Using panel data from 275 Chinese cities between 2011 and 2022,this study treats the construction of national crossborder e-commerce pilot zones as a quasi-natural experiment and employs a multi-period difference-in-differences model to systematically analyse the impact of digital trade on urban green total factor productivity. The findings indicate that digital trade can significantly enhance urban green total factor productivity,primarily through optimised resource allocation and industrial structure upgrading. Additionally,this impact is particularly pronounced in cities with higher levels of marketisation and more developed digital infrastructure. Furthermore,compared to traditional trade,the network connectivity of digital trade enhances its spatial spillover effects on neighbouring regions. Its knowledge and technology intensive characteristics also mean that digital trade heavily relies on innovation resources,leading to a synergistic effect between innovative cities and digital trade.更多还原