电子商务政策赋能城市绿色创新机制研究——来自国家级电子商务示范城市的证据

Research on the Mechanism of E-Commerce Policy Empowering Urban Green Innovation—Evidence from National E-Commerce Demonstration Cities

摘要: 绿色创新是推动城市绿色转型和助力双碳目标实现的关键抓手，电子商务政策是带动数字经济和实体经济融合的重要政策，但是二者之间的内在关联与作用路径尚未明确。基于此，选取2007~2022年285个地级市面板数据，以国家电子商务示范城市设立为准自然实验，运用多期双重差分模型，探究电子商务政策对城市绿色创新的影响以及传导路径。实证结果表明，电子商务政策能够促进城市绿色创新，经过PSM-DID和安慰剂检验等多种稳健性检验后依然成立。机制检验证明，电子商务政策可通过产业结构升级和数字创新能力这两条中介路径助推城市绿色创新。异质性分析发现，该政策的绿色创新效应在东部城市和环境重点保护城市中更加显著。

Abstract: Green innovation is the key to promote urban green transformation and help achieve the dual carbon goal. E-commerce policy is an important policy to promote the integration of digital economy and real economy, but the internal relationship and action path between the two are not yet clear. Based on this, this paper selects the panel data of 285 prefecture-level cities from 2007 to 2022, takes the establishment of national e-commerce demonstration cities as a quasi-natural experiment, and uses the multi-period DID model to explore the impact of e-commerce policies on urban green innovation and the transmission path. The empirical results show that e-commerce policies can promote urban green innovation, which is still valid after various robustness tests such as PSM-DID and placebo test. The mechanism test proves that e-commerce policy can promote the development of urban green innovation through the two intermediary paths of industrial structure upgrading and digital innovation ability. Heterogeneity analysis shows that the green innovation effect of the policy is more significant in eastern cities and environmentally protected cities.