采用自行设计的试验装置,通过室内淋洗模拟试验分析雨水中7Be质量活度、土壤吸附7Be质量活度及渗漏液中^7Be质量活度,对^7Be示踪坡面土壤侵蚀的可行性进行研究.试验结果表明雨水中的^7Be有73.3%被土壤吸附,只有17.3%进入渗漏液.因此,通过降雨到达地表的^7Be主要被土壤吸附,可以用于示踪土壤侵蚀研究.
The soil absorbing ^7Be capability from natural rainfall was analyzed by simulation experiment indoor using a self-designed test device in order to explore the feasibility of 7Be tracing slope soil erosion.The experimental results show that soil absorbing ^7Be capability from natural rainfall accounts for 73.3% and ^7Be capability of run-off accounts for 17.3%,restectively.Therefore,7Be can be taken as a tracer to study soil erosion.