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输沙量、侵蚀量与泥沙输移比的流域尺度转换研究是当前流域侵蚀产沙研究领域的前沿课题,旨在通过尺度转换理论将坡面小区试验研究成果转换到流域的更大范围。以赣江流域实测输沙量和计算侵蚀量与泥沙输移比数据为基础,探讨了该流域3个变量的流域尺度关系,进而研究分析了3个变量尺度转换的可能性。3个变量与流域面积的关系散点图和相关方程都反映了这3者与流域面积不存在明显的相关关系,相悖于前人反比关系的结论。文章还阐述了流域面积的内涵及输沙量、侵蚀量和输移比的影响因素与流域面积的关系,发现3个变量的影响因素与流域面积不存在尺度效应。由此推断在赣江流域输沙量、侵蚀量和泥沙输移比实现尺度转换存在的可能性不大。这一研究结论是否成立或是否具有普遍性意义还有待于更多流域的研究成果来进一步证实。
The scale conversion of sediment transport, sediment yield and sediment transport ratio is a frontier issue in the research of erosion and sediment yield in current watershed. The aim is to transform the experimental results of slope plots to a wider area by the scale conversion theory. Based on the measured sediment concentration and the calculated erosion and sediment transport ratio in the Ganjiang River basin, the relationship between the three variables in the basin was discussed. Then the possibility of scaling the three variables was analyzed. The relationship between the three variables and drainage area The scatter diagram and related equations all reflect the fact that there is no obvious correlation between these three and drainage area, which is contrary to the inverse relationship between the three. The article also elaborates the connotation of basin area and the relationship between the influencing factors of sediment discharge, erosion and transport ratio and drainage area, and finds that there is no scale effect between the influencing factors of three variables and drainage area. It is concluded that there is little possibility of scale conversion in sediment yield, erosion and sediment transport in the Ganjiang River Basin. Whether this research conclusion is established or whether it has universal significance needs to be further confirmed by the research findings of more basins.