城镇化与物流绿色全要素生产率的门槛效应研究

Research on the Threshold Effect of Urbanization and Logistics Green Total Factor Productivity

在相关文献分析的基础上提出了城镇化与物流绿色全要素生产率非线性关系的假设。收集了2008-2017年30个省级行政区的面板数据,构建面板门槛模型,以交通基础设施水平为门槛变量,分区域研究城镇化与物流绿色全要素生产率的关系。结果表明:在交通基础设施水平的影响下,全国区域、东部和中部地区的城镇化与物流绿色全要素生产率的关系表现出显著的区间效应。当交通基础设施处于低和较低水平区间时,两者为负相关,而处于较高和高水平区间时,两者为正相关,这与国内外部分学者提出的单纯正相关或单纯负相关结果相悖。西部地区的城镇化与物流绿色全要素生产率则呈负相关。基于研究结论,为城镇化建设进程中提高物流绿色全要素生产率提出相应的对策建议。

Based on the analysis of related literature,this paper proposes the assumption of non-linear relationship between urbanization and total factor productivity of logistics.By collecting panel data of 30 provincial administrative regions from 2008 to 2018,using the traffic infrastructure level as the threshold variable and constructing the threshold panel model,the relationship of urbanization rate and logistics green total factor productivity is analyzed.The results show that the urbanization rate and logistics green total factor productivity present significantly interval effect due to different traffic infrastructure level,no matter in the national,eastern or central regions.The two are negatively correlated when the traffic infrastructure is in the low-level range,and are positively correlated when the traffic infrastructure level is in the middle and high-level range,which is contrary to the results of pure positive or negative correlation proposed by some domestic or abroad scholars.Urbanization in the west is negatively correlated with green logistics total factor productivity.Based on the research conclusion,this paper puts forward relative countermeasures and suggestions for improving logistics green total factor productivity in urbanization construction.