土壤侵蚀示踪的^137Cs技术研究进展  

Research progress in ^137Cs technique to trace soil erosion

作　　者：王勇 伍佐 苏正安 周涛 王俊杰 刘翊涵 王晓艺 WANG Yong;WU Zuo;SU Zheng'an;ZHOU Tao;WANG Junjie;LIU Yihan;WANG Xiaoyi(College of Water Conservancy and Hydropower Engineering,Sichuan Agricultural University,Ya'an 625014,China;Key Laboratory of Mountain Hazards and Earth Surface Processes,Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Geography and Resources Science,Sichuan Normal University,Chengdu 610101,China)

机构地区：[1]四川农业大学水利水电学院,雅安625014 [2]中国科学院·水利部成都山地灾害与环境研究所中国科学院山地灾害与地表过程重点实验室,成都610041 [3]中国科学院大学,北京100049 [4]四川师范大学地理与资源科学学院,成都610101

出　　处：《核技术》2021年第1期64-76,共13页Nuclear Techniques

基　　金：第二次青藏高原综合科学考察研究项目(No.2019QZKK0307);水体污染控制与治理科技重大专项(No.2017ZX07101-001);四川省科技计划(No.2018JY0034、No.2018SZDZX0034);国家自然科学基金(No.41701324);中国博士后科学基金(No.2020M683368)资助。

摘　　要：^137Cs示踪技术具有快速、简单、准确等优点,已广泛应用于土壤侵蚀研究中。为更加科学地认识以及应用^137Cs示踪土壤侵蚀速率,通过对已发表^137Cs示踪技术的文献进行科学计量和分析,提出了^137Cs示踪土壤侵蚀存在的主要问题以及未来的发展趋势。目前,^137Cs法示踪土壤侵蚀研究主要集中在背景值确定、侵蚀转化模型的构建与修正等方面,同时高精度、高分辨率的^137Cs背景值预报模型(适用于不同情景模式)和全球性的^137Cs背景值数据库亟待建立。未来,由于^137Cs半衰期为30.2 a,土壤中^137Cs的含量逐渐减少,亟需进一步开展多核素示踪和多方法的联合研究,同时进一步验证和修正^137Cs侵蚀转化模型。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 multimethod in the future,and simultaneously revise the^137Cs erosion model to fit for estimation of soil erosion rate.

关 键 词：^137CS 土壤侵蚀 背景值 侵蚀转化模型 

分 类 号：S157.1[农业科学—土壤学]