Research progress in 137Cs technique to trace soil erosion
WANG Yong,
WU Zuo,
SU Zheng'an,
ZHOU Tao,
WANG Junjie,
LIU Yihan,
WANG Xiaoyi
Affiliations
WANG Yong
College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya'an 625014, China
WU Zuo
College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya'an 625014, China
SU Zheng'an
Key Laboratory of Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
ZHOU Tao
Key Laboratory of Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
WANG Junjie
Key Laboratory of Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
LIU Yihan
Key Laboratory of Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
WANG Xiaoyi
College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya'an 625014, China
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.
