Runoff and Sediment Transport Simulation in the Jinghe River Basin Based on the Combination of SWAT and CA-Markov Models

Hydrological process is an important indicator for the health evaluation of the hydrological ecosystem in a basin. The aims of this study were to explore the impact of land use change on the runoff and sediment transport in the Jinghe River Basin and provide a new method for the quantitative prediction of runoff and sediment transport based on the combination of SWAT and CA-Markov Models. The simulated results indicated that the distribution of runoff and sediment transport differs greatly at the spatio-temporal scales, and the runoff is more sensitive to external changes. From 2005 to 2025, with the continuous changes in land use, the runoff of the basin showed a trend from increase then to decrease, while the amount of sediment transport showed a trend of continuous increasing.