Spatial and temporal changes of runoff in the Yellow River in recent 15 years

Abstract

In this study, the runoff data from 12 representative stations in the Yellow River from 2005 to 2020 is utilized, and the Mann-Kendall trend test is used to examine the changes in the observed runoff of the Yellow River. The results show that the annual runoff has grown in the upper reaches and has gradually reduced along the river flow direction. It is because the runoff is mainly affected by precipitation and human activities. In addition, the runoff mutation of each hydrological station is not consistent. This may be caused by many factors, resulting in the complexity of annual runoff changes. The findings can reveal runoff sequence variation of the Yellow River and provide a theoretical basis for river management.