It is a largest influence on upper layer soil moisture dynamic state during infiltration, 10cm depth moisture changes most violent, it is shortest to reach steady time, and the water content of soil layer changesrelatively gentlely under 50cm.

• 入渗对上层水分动态影响最大，10cm深度处水分变化最剧烈，达到稳定的时间最短，而50cm以下土层含水量变化相对平缓。