摘要
示踪技术在研究土地退化状况、土壤资源可持续利用、土壤侵蚀等方面具有重要的应用价值。文章介绍了放射性物质示踪、稀土元素示踪、磁性示踪等3种主要示踪技术在土壤侵蚀研究中的应用概况,重点综述放射性单核素(137Cs、210Pb、7Be)示踪技术、放射性离子示踪技术和复合核素示踪技术在土壤侵蚀研究中的应用进展,最后结合示踪技术在土壤侵蚀研究中的特点,对其今后的发展方向和应用前景作了展望,即多核素示踪技术的应用将成为土壤侵蚀研究的一大重点;3S技术与示踪技术的有机结合,将为区域水土流失快速评价提供一条有效途径。
Recently the tracer technique has been emerged out as a useful technique especially to study the sustainable utilization of soil resources and soil erosion. The present paper summarizes the applications of radioactive tracer substances, rare earth element tracers and magnetic tracers, with emphasis on mononuclear radioactivity (137Cs, 210Pbex, 7Be), radioactivity ion tracer technique and compound isotopic tracer technique. The development and prospect of tracer technique has been discussed in detail with special reference to their role in identification and evaluation of regional soil and water losses.
出处
《广西农业科学》
CSCD
2009年第8期1040-1043,共4页
Guangxi Agricultural Sciences
基金
岩溶动力学重点实验室资助项目(桂科能0842008)
关键词
核素示踪技术
土壤侵蚀
land deterioration
nuclide tracer technique
soil erosion