抄録
Numerical experiments were carried out to investigate the relationship between the reduction curves of base-flow and the permeability of soil layer at hill-sloped forest. Variable parameters of the experiments were only saturated hydraulic conductivities in the direction of the hill slope and the normal direction.
In the results, the peaks of the base-flow were controlled by the magnitude of hydraulic conductivities in the both directions and arrival times in the peak base-flow were governed by the magnitude of hydraulic conductivity in the normal direction to the soil surface. The results also showed that the shapes of the base-flow recession curves could be controlled by the magnitude of hydraulic conductivities in the direction of hill-slope.
