Interflow appears on upland slope in rainy season.Saturation zone at deeper layer of down slope lasts longer time after a rain event while it lasts shorter or no at up slope.

• 旱坡地在雨季有壤中流产生，坡下降雨后深层出现较长时间的饱和区，而坡上深层水势出现较短时间的饱和区或未出现变化；