The wave distribution of soil water along hillslope results from the fluctuation of overland flow, upslope runoff infiltration, and lateral downslope flow.

• 土壤水分沿坡面呈“波浪形”分布是坡面径流的波动性、上方来水（径流）的沿程入渗以及侧向沿坡向下流等综合作用的结果。