Different positions in gully area have different phenomena of erosion and sediment yield, and even represent disparate patterns of water and sediment processes in different watershed scales.
沟壑区的不同部位具有不同的侵蚀产沙现象，并在不同的空间尺度上表现出迥异的水沙运动规律。为此需将流域分为坡面与沟道两大系统分别研究。
Taking Nverzhai small watershed in Wuling Mountain area as study area, the characteristics of runoff and sediment yield events based on 77 typical observed rainfall events in 2004—2008 were studied.
以武陵山区女儿寨小流域为研究区，根据流域2004—2008年77场典型降雨径流观测资料，研究流域次降雨径流与产沙特征。
The trend of runoff and sediment yield in the Jihe watershed declined evidently first and then remained steady during the research period.
径流与泥沙在多年变化中均呈先下降后平缓趋势。
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