碳排放权交易对中国低碳技术创新的影响研究:基于碳排放权交易试点的准自然实验

The Impact of Carbon Emissions Trading on Low-carbon Technology Innovation in China:a Quasi-natural Experiment Based on the Carbon Emissions Trading Pilot

碳排放权交易是促进低碳技术创新、降低碳排放成本的市场化环境规制工具。该研究选取2010-2017年30个省(市、自治区)的低碳专利数量指标,利用空间相关系数、自然断点法分析了中国低碳技术创新的空间集聚情况,并基于中国在7个地区开展碳排放权交易试点的准自然实验,利用DID模型检验中国碳排放权交易政策对低碳技术创新的影响。结果表明:中国低碳技术创新在东中部地区表现出明显的空间集聚效应,碳排放权交易试点的建立显著促进了区域的低碳技术创新水平。建议继续完善中国碳排放权交易市场机制,扩大试点碳市场的行业覆盖范围,发挥碳排放权交易市场对低碳技术创新的促进作用,并加强区域协同发展,增强低碳创新技术的空间溢出效应,助力碳达峰和碳中和目标的实现。

Carbon emissions trading is a market-based environmental regulation tool to promote low-carbon technology innovation and reduce the cost of carbon emissions.This research selects the low-carbon patent quantity indicators of 30 provinces from 2010-2017 to analyze the spatial clustering of low-carbon technology innovation in China by using spatial correlation coefficients and natural break-point method.In order to test the impact of China’s carbon emission trading policy on low-carbon technology innovation,this research uses pilots in seven regions as a quasi-natural experiment of carbon emission trading through DID model.The results show that there has been a significant spatial agglomeration effect in the east-central region,and the establishment of carbon emission trading pilots significantly promotes the regional level of low-carbon technology innovation.Based on the findings,this paper suggests that China should continue to improve the national carbon market,expand the industry coverage of the pilot carbon market,give full play to the role of the carbon emissions trading market in promoting low-carbon technology innovation,and strengthen regional synergistic development to enhance the spatial spillover effect of low-carbon innovation technologies and help achieve the goal of carbon peaking and carbon neutrality.