Abstract: To reveal the interactive relationship between ecosystem services and urbanization development in the process of rapid urbanization, and to provide a basis for differentiated territorial spatial governance, this study took districts and counties in Hebei Province as the basic units, used the InVEST model and the coupling coordination degree model to evaluate the levels of population urbanization, economic urbanization, land urbanization, and comprehensive urbanization, as well as the spatiotemporal evolution of four ecosystem services, namely water yield, food supply, carbon storage, and habitat quality, from 2000 to 2020, and analyzed the coupling coordination relationship between the two. The results showed that the urbanization levels of various dimensions in Hebei Province exhibited obvious spatial differentiation, with high-value areas concentrated in central urban areas and coastal development zones, and low-value areas distributed in the Bashang and mountainous ecological function areas. The ecosystem services in Hebei Province exhibited a spatial pattern where the northern ecological high-value areas were relatively stable, the urban construction areas were under continuous pressure, and the plain agricultural areas showed functional differentiation. The relationship between urbanization and ecosystem services in Hebei Province was not a simple synergy or trade-off, but a complex coupling process formed under the combined effects of natural conditions and human activities. The coupling coordination degree between ecosystem services and urbanization in Hebei Province still had much room for improvement, and in the future, differentiated territorial spatial regulation needed to be strengthened to promote their coordinated development.

Key words: districts and counties, multi-dimensional urbanization, ecosystem services, spatiotemporal coupling, coordination relationship, Hebei Province