PAM覆盖度不同，坡长对侵蚀产沙过程的影响也不同。
The effect of slope length on erosion sediment is different at different PAM coverage.
本研究通过一系列人工模拟降雨，研究了在不同条件下坡长对侵蚀产沙过程的影响。
The impacts of slope length on sediment yield under different conditions are experimentally studied by means of artificial rainfall simulation.
认识侵蚀产沙过程中的尺度转换方法是进行不同尺度间侵蚀产沙模拟和尺度转换的基础。
Understanding the methods of scale transfer in the processes of sediment yield is the base of soil erosion and sediment yield modeling in different scales and scale transfer.
影响侵蚀产沙过程的因素在时空上具有很大的不均匀性和变异性，增加了不同尺度间侵蚀产沙模拟的复杂性。
Factors affecting the processes of soil erosion and sediment yield have more asymmetry and variability and enhance the complexity of modeling sediment yield in different scales.
高含沙水流搬运与重力侵蚀之间存在着很强的耦合关系，这是黄土高原高强度侵蚀产沙过程形成的重要因素。
Hyperconcentrated flows are an important factor responsible for the high-intensity erosion and sediment yield in the middle Yellow River basin.
能反映侵蚀产沙时空过程的、基于GIS的分布式侵蚀产沙模型成为研究的重点。
The GIS-based soil erosion and sediment yield models, which can reflect the process of spatial distribution of soil erosion and sediment, will be the study focus in the future.
目前关于流域侵蚀产沙与输移过程随流域尺度复杂变化的研究，缺乏应有的广度和深度。
Now researches about soil erosion and sediment transport course with varying watershed scales lacks certain extent and depth.
目前关于流域侵蚀产沙与输移过程随流域尺度复杂变化的研究，缺乏应有的广度和深度。
Now researches about soil erosion and sediment transport course with varying watershed scales lacks certain extent and depth.
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