Abstract
Analyzing the spatiotemporal changes of the ecosystem services flow and the impact mechanism is of great significance for achieving human well-being. It is challenged by regional differences in resource utilization pattern and intensity and the complex mechanisms of action between ecosystem services supply and demand. This study used InVEST model and local indicator of spatial association to delineate ecosystem services supply and demand areas. This study used comparative ecological radiation force to characterize the flow of carbon sequestration from supply to demand areas, and its changes were analyzed. The influence of different factors on the carbon sequestration supply, demand and flow was analyzed using correlation analysis. The results showed that there were significant spatial differences in the supply–demand situation of the Yellow River Basin. In this study, 7 supply areas and 29 demand areas were delineated. Many ecological restoration policies implemented from 2000 to 2020 improved the environmental situation and enhanced carbon sequestration flow. Carbon sequestration flow was more sensitive to human activities. The impact of the same intensity of human activity on the supply potential of carbon sequestration was stronger than the supply capacity. This study can provide a reference for regional ecosystem management.
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