Publications by authors named "Ya-qiong Yuan"
The hydrochemistry of river water in a karst basin has a rapid response to the rainstorm/flood process, which is an important process of the karst carbon cycle and should not be ignored. Based on the dynamic monitoring of the hydrochemical characteristics of the flood process in the Yangshuo section on November 8-12, 2015, the dynamic change in the main ions and the influencing factors were analyzed, and the concentration and flux of inorganic carbon from different sources were calculated. The results showed that the hydrochemistry types in different stages of the flood area belonged to the Ca-HCO type.
View Article and Find Full Text PDFThe observation and sampling were carried out in May 2013 to April 2014 in a hydrological year for two river basins with different geological background in upstream of Li river basin. The seasonal variations of river water chemistry and its main influencing factors were discussed in this paper. The results showed that the hydrochemistry types of both Darongjiang basin with 9% of carbonates and Lingqu basin with nearly 50% of carbonates in area belonged to Ca-HCO3 type.
View Article and Find Full Text PDFArticle Synopsis
- This study examines how river chemical composition can help understand the chemical weathering process and its impact on carbon cycles, collecting water samples in 2013 to analyze seasonal variations in ion concentrations.
- The results indicated that calcium (Ca²⁺) and bicarbonate (HCO₃⁻) were the primary ions, reflecting the influence of carbonate rock dissolution, with ion concentrations peaking in winter and varying throughout other seasons due to factors like dilution and agricultural activities.
- Using chemical mass balance methods, the research estimated that about 28.26% of bicarbonate ions resulted from sulfuric acid weathering, contributing to a total carbon flux of approximately 895,000 tons per year,