Abstract: The administrative land allocation coordination index was constructed using data from 285 prefecture-level cities in China from 2007 to 2018, and the results show that the administrative land allocation imbalance caused by excessive land supply is mainly in small and medium-sized cities in the central and western regions, and the administrative land allocation imbalance caused by insufficient land supply is all in core cities in the eastern region. The empirical results show that the imbalance in the administrative allocation of land is detrimental to the growth of green total factor productivity in Chinese cities.Reducing the administrative supply of land to small and medium-sized cities in the central and western regions and increasing the administrative supply of land to core cities in the eastern regions, reducing the imbalance in the administrative allocation of land, which is conducive to promoting green total factor productivity growth in small and medium-sized cities in the central and western regions and core cities in the eastern regions. The results of the mechanism analysis and mediating effects test indicate that the land supply bias policy affects green total factor productivity in small and medium-sized cities in the central and western regions and core cities in the eastern region through both environmental regulation and economic agglomeration paths.

Key words: land supply bias, green total factor productivity, environmental regulation, economic agglomeration