Hydrochemical characteristics of surface water of the Beichuan River in Xining
In order to investigate the surface hydrochemical characteristics and water quality varia-tions of the Beichuan River in Xining,samples are systematically collected for exploring the spatial distribution characteristics,hydrochemical classification and other typical indicators of the river.Be-sides,correlation analysis is conducted for the study.The results indicate that the hydrochemical types of surface water of Beichuan river are relatively complex,and their chemical components have certain regularity in spatial distribution.The river can be divided into two sections based on the hydrochemical classification.The ion content of the downstream section flowing through the ecological park decreases significantly,indicating that the ecological park has a greater purification effect on the river than its self-purification.The solute source of surface water is mainly carbonate mineral weathering.Cation exchange occurs throughout the entire section of the river.Correlation analysis shows that some ions and trace elements have the same source,while cluster analysis shows that the chemical components have obvious regional characteristics.
hydrochemical classificationspatial distributionsolute sourceBeichuan River