2024 Volume 80 Issue 3 Article ID: 22-00165
Reservoir is strongly influenced by the inflow river and its watershed, and thus watershed management plays a significant role in the management of water resources in the watershed. In this study, we measured the silica and alkalinity of water collected near the downstream of a predominantly forested watershed to understand the characteristics of soil and base rock in the forest understory and water runoff therein, and analyzed their long-term evolution. The correlation analysis with the slope angle was used to determine the relationship between the slope angle and the water recharge function of the forests. It was found that silica and alkalinity were highly correlated with slope angle, and that silica content is an indicator of groundwater residence time and alkalinity is an indicator of groundwater table level, and that residence time in the soil may increase over time, even taking into account changes in flow rate.
