Abstract
In recent years, the Sarobetsu Mire is suffering from aridification allowing for the invasion of Sasa bamboo grass. In order to clarify the cause of aridification, the hydrologic process in the entire watershed must be properly assessed. Specifically, reliability of assessments of the snow accumulation and snowmelt are needed to evaluate the water balance in cold, snowy regions.
This paper focuses on the hydrologic process estimated by the two-layer model that deals with the heat balance in the atmosphere, vegetation layer and ground surface as well as the simulations of groundwater. Accordingly, the hydrologic processes including the obscure factors such as snow accumulation, snowmelt and evapotranspiration were properly assessed. Based on such assessment, the characteristics of groundwater are analyzed using FEM. The Proposed method is considered to be proper is assessing water balance in cold, snowy regions and its effect on the groundwater.
