The impact of the coordinated development of Beijing-Tianjin-Hebei urban agglomeration on green total factor productivity--an empirical analysis based on the synthetic control method

Abstract

Based on the panel data of 92 prefecture-level cities in five major urban agglomerations from 2010 to 2019, and taking the 2015 Beijing-Tianjin-Hebei Coordinated Development Planning Outline as the quasi-natural experiment, evaluating the impact of the coordinated development of Beijing-Tianjin-Hebei on green total factor productivity by using synthetic control method. The study found that the coordinated development of Beijing-Tianjin-Hebei has a significant promoting effect on green total factor productivity; The policy effect of Beijing-Tianjin-Hebei coordinated development has regional differences in the time dimension. The coordinated development has a greater role in promoting non-core cities in the short term and a stronger role in promoting core cities in the long term; The mechanism test results show that the coordinated development of Beijing-Tianjin-Hebei mainly affects green total factor productivity through industrial structure upgrading and ecological environment protection.