长三角区域一体化生态优化效应研究

Study on ecological optimization effect of regional integration in Yangtze River Delta

基于长三角地区41个城市2003-2016年的面板数据进行空间计量分析,就区域一体化对生态环境的影响展开研究,结果表明:在空间溢出效应下,区域一体化水平与环境污染呈负相关关系。进行空间效应分解后,直接效应、间接效应、总效应均显示区域一体化水平具有显著的生态优化效应;将环境污染的衡量指标替换进行稳健性检验发现,区域一体化对于不同污染物的影响存在异质性;在区域一体化起步阶段,其生态优化效应不明显,而在区域一体化后期,会产生显著的生态优化效应。

Based on the panel data of 41 cities in Yangtze River Delta from 2003 to 2016,this paper studies the impact of regional integration on ecological environment.The results show that under the spatial spillover effect,the level of regional integration is negatively correlated with environmental pollution.After spatial effect decomposition,direct effect,indirect effect and total effect all show that the level of regional integration has significant ecological optimization effect.It is found that the impact of regional integration on different pollutants is heterogeneous by replacing the indicators of environmental pollution for robustness test;In the initial stage of regional integration,its ecological optimization effect is not obvious,but in the later stage of regional integration,it will produce significant ecological optimization effect.