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采用稀土元素（REE）示踪法对坡面侵蚀垂直分布特征动态变化过程进行了初步研究。结果表明．坡面侵蚀垂直分布特征在次降雨过程呈动态变化趋势．尽管在产流过程中相对侵蚀量的变化趋势基本相似．但比值差异很大，这主要取决于坡面径流的强度。此外、次降雨侵蚀产沙的垂直分布特征与侵蚀过程中产沙的分布特征差异亦很大，建议应加强侵蚀产沙过程的研究。
REE tracing method was used to study the dynamic changes of vertical distribution of erosion on slope surface. The results show. The vertical distribution of slope erosion shows a dynamic trend during the sub-rainfall. Although the trend of relative erosion in the process of runoff is basically similar. However, the ratio varies widely, depending on the strength of the runoff on the slope. In addition, the vertical distribution characteristics of sediment yield and the distribution characteristics of sand production in the process of erosion vary greatly. It is suggested that the research on erosion and sediment yield should be strengthened.