摘要
介绍了稀土元素(REE)示踪和中子活化分析(NAA)方法在土壤侵蚀研究方面的原理和方法,并用该方法对细沟侵蚀过程进行了初步研究。结果表明,REE示踪法不仅可定量测定不同坡位的侵蚀量,还可以揭示冲刷过程中各坡位相对侵蚀量的变化规律;该方法误差大多小于20%,其精确度完全能够满足土壤侵蚀研究的要求,为研究细沟侵蚀动态变化过程提供了一种可靠而有效的新方法。
Based on the principle and method of rare earth elements (REE) tracer and NAA for the study of soil erosion, the changeable process of rill erosion on loess sloping surface was researched in runoff scouring experiments. The results showed that the REE tracer and NAA method can be used not only quantitatively to determine soil erosion amounts on different slope sections, but also to reveal the changeable trend of relative erosion amounts. The relative errors are mostly less than 20% for the tracing elements, which is considered satisfactory in the soil erosion studies.
出处
《核技术》
CAS
CSCD
北大核心
2003年第6期425-428,共4页
Nuclear Techniques
基金
黄土高原土壤侵蚀与旱地农业国家重点实验室基金(10501-63)
中国科学院知识创新工程项目(KZCX1-10-04)资助
