摘要
数字经济发展迅速,探究数字经济对环境污染的影响和作用机制,对于推动长江经济带高质量发展具有重要意义。基于2011~2019年长江经济带沿线40个地级及以上城市的面板数据,探讨创新水平在数字经济与环境污染之间的作用机制,利用门槛效应模型分析其非线性关系及作用区间,进一步借助空间杜宾模型考察数字经济产生的空间溢出效应。结果表明:(1)数字经济对于本地的环境污染具有显著的抑制作用,且经过多种稳健性检验,结论依然成立。(2)创新水平是数字经济影响环境污染的重要路径,且当创新水平超过门槛值6.41后,数字经济对于环境污染的影响系数将从-0.024变为-0.042,存在边际递增的治污效果。(3)在抑制本地环境污染的同时数字经济的空间溢出效应会加剧周边地区的污染排放;产量规模的扩张可能成为污染加剧的原因,数字经济对环境污染的抑制效果被生产规模扩大带来的污染增长所覆盖;为此,需要加强地区间协同治理,避免生产规模的不合理稀释数字经济的治污效果。
With the rapid development of the digital economy,it is of great significance to explore the impacts and the mechanism of the digital economy on environmental pollution for promoting the high⁃quality development of the Yangtze River Economic Belt.Based on the panel data of 40 prefecture⁃level and above cities along the Yangtze River Economic Belt from 2011 to 2019,this paper explored the interaction mechanism of innovation level between digital economy and environmental pollution.The threshold effect model was used to analyze the nonlinear relationship and the effect range.The spatial spillover effect of digital economy using spatial Durbin model was further studied.The results showed that:(1)The digital economy had a significant inhibitory effect on local environmental pollution.This conclusion was still valid after a variety of robustness tests.(2)The innovation level was an important path for the digital economy to affect environmental pollution.When the innovation level exceeded the threshold value of 6.41,the impact coefficient of the digital economy on environmental pollution changed from-0.024 to-0.042,showing a marginal increasing pollution control effect.(3)While curbing local environmental pollution,the spatial spillover effect of the digital economy would exacerbate the pollution emissions in the surrounding areas.The expansion of the production scale might become the cause of increased pollution,and the inhibition effect was covered by the pollution growth,caused by the expansion of the production scale.Therefore,it is necessary to strengthen inter⁃regional collaborative governance to avoid dilution of the pollution control effect of the digital economy by unreasonable production scale.
作者
陈祖海
符斌
CHEN Zu-hai;FU Bin(School of Economics,South-Central Minzu University,Wuhan 430074,China;China Wulingshan Rural Development Research Institute,Wuhan 430074,China)
出处
《长江流域资源与环境》
CAS
CSCD
北大核心
2024年第1期126-138,共13页
Resources and Environment in the Yangtze Basin
基金
中国武陵山乡村发展研究院项目(PTS22002)。
关键词
数字经济
创新水平
环境污染
门槛效应
空间溢出
长江经济带
digital economy
innovation level
environmental pollution
threshold effect
space overflow
the Yangtze River Economic Belt