环境信用评价政策对产业结构升级的影响研究——基于多时点双重差分模型

Research on the Influence of Environmental Credit Evaluation Policy on the Upgrading of Industrial Structure—Based on the Multi-Time Point Double Difference Model

摘要: 环境信用评价政策主要通过影响企业的生产经营和创新活动来影响产业结构升级。本文测算了2002~2021年283座城市的产业结构升级水平，并在此基础上通过构建多时点DID模型评估环境信用评价政策对城市产业结构升级的政策效果。研究发现：环境信用评价政策抑制了城市产业结构升级；这种抑制效果是以城市金融贷款数额作为中介路径产生的；且这种抑制作用存在着地区异质性，在非东部城市的作用是显著的，而在东部城市的作用却是不显著的。启示：政府应该健全环境信用评价政策机制、加大金融资本支持；企业应当节流开源，解决资金问题，加快创新，解决技术问题。

Abstract: The environmental credit evaluation policy mainly affects the upgrading of industrial structure by affecting the production, operation and innovation activities of enterprises. This paper calculates the upgrading level of industrial structure of 283 cities from 2002 to 2021, and on this basis, constructs a multi-time DID model to evaluate the effect of environmental credit evaluation policy on urban industrial structure upgrading. It is found that the environmental credit evaluation policy suppresses the upgrading of urban industrial structure, which takes the amount of urban financial loans as the intermediary path, and there is regional heterogeneity in this suppression. The role is significant in non-eastern cities, but not in eastern cities. Revelation: the government should improve the policy mechanism of environmental credit evaluation and increase the support of financial capital; enterprises should cut expenditure and open source, solve capital problems, speed up innovation and solve technical problems.