Measurements and Spatial-Temporal Evolution of Urban Comprehensive Carrying Capacity in the Yellow River Basin

An evaluation index system was conducted to determine the urban comprehensive carrying capacity of the Yellow River Basin using four subsystems (resources, society, ecology, and economy). The urban comprehensive carrying capacity level of nine provinces in the Yellow River Basin from 2008 to 2019 was determined using the entropy weight TOPSIS model, and the spatial and temporal dynamics of the urban comprehensive carrying capacity of each province were investigated. There were four key results. (1) The urban comprehensive carrying capacity of the upstream and downstream provinces decreased from 2008 to 2011 and increased from 2011 to 2019; in the midstream provinces, it increased from 2008 to 2011 but decreased after 2011. (2) The urban comprehensive carrying capacity of the Yellow River Basin was "high in the east and west, low in the middle" from 2008 to 2017, while in 2019, the distribution was "high in the west and low in the east." The gap between the urban comprehensive carrying capacities of the nine provinces and regions gradually narrowed over the study period. (3) The urban comprehensive carrying capacity of the Yellow River Basin increased annually during the study period. (4) The urban comprehensive carrying capacity was mainly influenced by the social and ecological subsystems.