低碳城市和创新型城市双试点效果评估——基于绿色经济转型视角

Evaluation of the Effectiveness of the Dual Pilot Program for Low-Carbon Cities and Innovative Cities-Based on the Green Economy Transition Perspective

全面系统评估环境规制政策协同效应对绿色经济效率的影响,对于推动生态文明建设具有重要的意义。文章基于2006—2020年281个地级市的样本数据,运用多期双重差分模型评估双试点政策对绿色经济效率的影响。研究发现:①相比于非试点城市,双试点政策的实施使试点城市的绿色经济效率提升约8.29%,此结论在经过平行趋势等稳健性检验后依旧成立;②双试点政策比单试点政策更能显著提高绿色经济效率,政策间存在协同效应;③双试点政策通过创新型和改进型绿色技术创新、降低能源消费强度促进绿色经济效率,同时会增加能源消费规模进而抑制绿色经济效率;④双试点政策对周围100~900 km以内区域的绿色经济效率产生显著的正向空间溢出效应。本文丰富了环境政策协同对绿色经济效率的影响研究,为政策的有效实施、推动减污降碳协同增效提供科学支持。

A comprehensive and systematic assessment of the impact of environmental regulatory policy synergies on the efficiency of green economy is of great significance for promoting the construction of ecological civilization.Based on the sample data of 281 prefecture-level cities from 2006 to 2020,the article uses a multi-period difference-in-differences model to assess the impact of the dual-pilot policy on the efficiency of green economy.The study finds that:①compared with non-pilot cities,the implementation of the dual-pilot policy improves the green economic efficiency of the pilot cities by about 8.29%,and this conclusion is still valid after parallel trend and other robustness tests;②the dual-pilot policy significantly improves the green economic efficiency than the single-pilot policy,and there is a synergistic effect between the policies;③the dual-pilot policy promotes the green economic efficiency through the innovation of innovative and improved green technologies,and the reduction of energy consumption intensity;④the dual-pilot policy has a significant positive spatial spillover effect on the surrounding area within 100~900 km.This paper enriches the research on the impact of environmental policy synergies on the efficiency of green economy and provides scientific support for the effective implementation of policies and the promotion of synergies in reducing pollution and carbon emissions.