CAJ | 학술논문

崩岗侵蚀产沙是崩岗侵蚀研究的重点。本研究对典型崩岗进行采样、分析，筛选出最佳指纹因子组合，利用组合指纹法对崩岗侵蚀产沙进行研究。结果表明：不同层次崩岗土体的理化性质有显著差异，利用无参检验和多元判别分析筛选出粘粒含量、Fe、K为最佳指纹因子组合（累积判别率大于90％），说明指纹法可用于崩岗侵蚀产沙来源研究。同时利用多元混合模型得出侵蚀产沙中超过50％的泥沙来源于红土层和砂土层，这表明该崩岗还处在发展阶段。
붕강침식산사시붕강침식연구적중점。본연구대전형붕강진행채양、분석，사선출최가지문인자조합，이용조합지문법대붕강침식산사진행연구。결과표명：불동층차붕강토체적이화성질유현저차이，이용무삼검험화다원판별분석사선출점립함량、Fe、K위최가지문인자조합（루적판별솔대우90％），설명지문법가용우붕강침식산사래원연구。동시이용다원혼합모형득출침식산사중초과50％적니사래원우홍토층화사토층，저표명해붕강환처재발전계단。
Sediment yield of collapse erosion is the key point in the research of collapse erosion. Through sampling and analysis to the typical collapse mounds, it has selected the best fingerprints composition. The research was conducted to the sediment yield of the collapse erosion by using the composite fingerprints. The result shows that the physicochemical properties of the collapse soil have obvious differences at different layers. By using the parameterless examination and multiple discriminate analysis, it is selected the clay content, Fe and K as the best fingerprint factors composition （ accumulated discriminate rate is higher than 90% ）. It means that the fingerprints can be used for the research of the sediment yield of the collapse erosion. Meanwhile, through the multiple - mixed model, it is concluded that more than 50% sediment of the eroded sediment yield is from the red soil layer and sand layer, which means that the collapse is still under the developing stage.