长三角一体化对区域物流高质量发展的影响及提升策略研究

The influence of Yangtze River Delta integration on the high quality development of regional logistics and its promotion strategy Research

文章选取2003—2019年中国155个城市的面板数据作为研究样本,利用多期双重差分法(DID)来研究长三角区域一体化政策对区域物流业产生的影响。研究发现:(1)长三角区域一体化政策能显著提升物流业高质量发展的水平,经过平行趋势检验、PSM-DID等稳健性检验之后,结论依旧成立;(2)长三角区域一体化政策对不同地区的物流高质量发展影响存在差异,对原位城市和新进城市的影响具有异质性。

In this paper,the panel data of 155 cities in China from 2003 to 2019 were selected as research samples,and the multi-pe-riod difference difference model(DID)was used to study the impact of regional integration policies in the Yangtze River Delta on the re-gional logistics industry.The findings are as follows:①The regional integration policy of the Yangtze River Delta can significantly improve the level of high-quality development of the logistics industry.After the parallel trend test,PSM-DID and other robustness tests,the conclu-sion is still valid;②The regional integration policy of the Yangtze River Delta has different impacts on the high-quality development of lo-gistics in different regions,and its impacts on the existing cities and new citiesare heterogeneous.