土壤侵蚀示踪方法研究综述  

Summary of Tracer Method on Studies of Soil Erosion

作　　者：马琨[1] 王兆骞[1] 陈欣[1] 

机构地区：[1]浙江大学农业生态研究所,杭州310029

出　　处：《水土保持研究》2002年第4期90-95,共6页Research of Soil and Water Conservation

基　　金：国家自然科学基金项目 (编号 3 0 0 3 0 0 3 0 )资助

摘　　要：土壤侵蚀已成为极为严峻的环境问题之一 ,由于降雨、坡面层流引起的土壤侵蚀被认为是涉及到坡面土壤的分散、沉积和转移同时发生的过程。分别介绍了放射性核素 1 37Cs示踪 ,稳定性稀土元素示踪 ,磁性示踪剂在土壤侵蚀、沉积、分布和泥沙来源研究领域中的进展情况。旨在借鉴国内外研究方法上的经验。对于准确评价侵蚀泥沙在坡面空间、时间尺度上的分布、转运、沉积 ,了解土壤侵蚀过程和评价基于坡面。Soil erosion has already become one of the most serious environmental problems,soil erosion by water is considered a process involving the detachment, transport and deposition of soil materials by the erosive forces of rainfall and surface flow of water. The development of radionuclide 137 Cs tracer, stability rare earth element tracer and magnetism tracer were used to study soil erosion,deposition,sediment distribution and the source of sediment, which were separately presented.The object was to use for reference the experience of study method. It is important that accurate evaluations of the processes of detachment , transport and deposition from hillslopes are important to better understand the process of soil erosion and evaluate physically based on hillslope or watershed scale erosion models.

关 键 词：示踪方法 磁性示踪剂 土壤侵蚀 核素示踪法 稳定性同位素中子活化技术 

分 类 号：S157.1[农业科学—土壤学]