Research progress in 137Cs technique to trace soil erosion

Abstract

As a new method of soil erosion research, 137Cs tracer technology has been widely used in soil erosion research due to its simplicity, rapidity and accurate. After the development of germination exploration, rapid development, popularization and application, the 137Cs technical system has become more mature. In order to understand and apply 137Cs trace technology more scientifically and lay a theoretical foundation for the application of 137Cs technology. The historical process of 137Cs tracer technology was reviewed using scientific bibliometrics. Meanwhile, the main problems existing in the current research were summarized, and the future development trend is prospected. At present, the research on the application of 137Cs to trace soil erosion mainly focuses on the determination of reference inventory, the construction and modification of 137Cs erosion model. It is necessary to establish a high-precision and high-resolution 137Cs reference inventory prediction model (suitable for different scenarios) and a global 137Cs reference inventory database. Due to the short half-life of 137Cs, the concentration of 137Cs is gradually decreasing, hence it is necessary to carry out the joint research of multi-nuclide tracing and multi-method in the future, and simultaneously revise the 137Cs erosion model to fit for estimation of soil erosion rate.

Keywords

• 137cs
• soil erosion
• reference inventory
• 137cs erosion model