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本文介绍一种利用核素示踪技术研究黄土高原不同地形部位土壤侵蚀量的监测新方法。试验结果表明，与中子活化分析技术相结合的ＲＥＥ示踪法可以定量地测定坡面不同地形部位的相对侵蚀量，且有较高的精确度及灵敏度，同时也可揭示侵蚀过程中相对侵蚀量沿坡面的变化趋势；还可反映野外全坡长小区土壤侵蚀的分布模式。室内外试验证明，该方法为土壤侵蚀的量化研究开辟了新的途径。
In this paper, a new method of monitoring soil erosion on different topographical parts of the Loess Plateau by using radionuclide tracer technique is introduced. The experimental results show that the REE tracer method combined with neutron activation analysis can quantitatively measure the relative erosion of different topographic parts of the slope and has higher accuracy and sensitivity. Meanwhile, it can also reveal the relative erosion during erosion Volume along the slope of the trend; can also reflect all the long slope of the field distribution of soil erosion patterns. Indoor and outdoor experiments show that this method opens up a new way for the quantitative study of soil erosion.