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利用核分析技术研究土壤侵蚀是近30多年来发展起来的新兴技术,它能对土壤侵蚀时空变化两个方面进行定量监测,与传统研究方法相比,具有很多的优越性。本文对几种天然放射性或大气沉降的核素及稀土元素示踪在土壤侵蚀研究中的应用及研究现状进行了综述;总结了利用137Cs、210Pb、7Be、226Ra、232Th,以及稀土元素(REE)研究土壤侵蚀及沉积速率的一些数学模型;探讨了它们的优势与不足,并就核分析技术的发展趋势进行了论述。
The study of soil erosion using nuclear analysis is an emerging technology developed over the past 30 years. It can quantitatively monitor two aspects of the temporal and spatial variations of soil erosion. Compared with traditional research methods, soil erosion has many advantages. In this paper, the application of several natural radioactive or atmospheric sedimentation radionuclide and rare earth elements tracing in the research of soil erosion are summarized. The current status of research on the application of 137Cs, 210Pb, 7Be, 226Ra, 232Th and REE, Study some mathematical models of soil erosion and deposition rate, discuss their advantages and disadvantages, and discuss the development trend of nuclear analysis technology.