【摘要】 利用环境核素137Cs示踪技术研究土壤侵蚀被越来越多的科研人员所采用,而背景值的确定是利用该技术研究土壤侵蚀的前提和根本,直接关系到侵蚀速率计算的准确与否。本文从137Cs背景值采样点的选取方式,137Cs全球空间分布预报模型以及影响137Cs沉降因素等方面进行了总结性综述,对137Cs背景值研究应注意的问题和今后研究重点提出了建议。更多还原

【Abstract】 Radionuclide fallout（）¹³⁷Cs has been applied in soil erosion research by more and more researchers.However,confirmation of the（）¹³⁷Cs background value was the premise and foundation of whether the results of soil erosion rates were correct or not,provided by using（）¹³⁷Cs tracer technique.The current research results,including how to choose the（）¹³⁷Cs reference sites,the（）¹³⁷Cs reference inventory prediction model of global spatial distribution and the factors affecting the deposition of(（）¹³⁷Cs) were reviewed.Finally,the problems,suggestions and prospects for future development in（）¹³⁷Cs reference inventory were discussed.更多还原