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近几十年来,土壤侵蚀日益加剧,伴随着土地质量的退化,已成为影响区域可持续发展的主要环境问题。利用放射性核素137Cs进行土壤侵蚀研究能够简便、快速、准确地获取土壤流失、沉积和空间重新分布等详细信息。从元素来源、空间分布、背景值、示踪原理、活度测定、转换模型等方面对该方法进行了详细描述,在总结其优缺点的基础上,对其未来的发展方向做出了展望。
In recent decades, soil erosion has become more and more serious. With the degradation of land quality, it has become a major environmental issue that affects the sustainable development of the region. Soil erosion studies using radionuclide 137Cs can provide detailed information on soil erosion, sedimentation and spatial redistribution easily, quickly and accurately. This method is described in detail from the aspects of element source, spatial distribution, background value, tracer principle, activity measurement, transformation model and so on. On the basis of summarizing the advantages and disadvantages of the method, the future development direction of the method is prospected.