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文中提出了一种研究土壤侵蚀的新方法——稀土元素(REE)示踪法;讨论了该方法的基本原理、REE施加量计算、实验技术及应用前景。人工降雨小区的试验结果表明,该方法不但可用于精确测定不同地形部位侵蚀量,其测定结果相对误差小于15％,并可揭示降雨侵蚀过程不同地形部位侵蚀量的变化趋势。
In this paper, a new method for studying soil erosion - REE tracing method is proposed. The basic principle of the method, calculation of REE dosage, experimental techniques and application prospects are discussed. Experimental results show that this method not only can be used to accurately measure the amount of erosion in different topographic sites, but also has a relative error of less than 15%. It can also reveal the trend of erosion in different types of terrain under rainfall erosion.