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以放射性核素7Be为研究手段,对内蒙古阴山北麓开垦草原区春季土壤中的放射性核素7Be含量的连续性动态变化规律及土壤剖面中7Be含量的垂直变化特征进行了尝试性研究.由于7Be主要随降雨到达地表,而研究区春季(3~6月)降水很少,使得该时间段的7Be沉降量很小,在土壤表层没有形成明显的分布规律,因此,7Be不能作为估算开垦草原土壤风蚀量的示踪剂.
With the radionuclide 7Be as the research method, the continuous dynamic variation of 7Be content in the spring soil and the vertical variation of 7Be content in the soil profile were studied in the open grassland area of North Yinshan, Inner Mongolia.Because 7Be The main rainfall in the study area reached the ground surface in the spring (March to June), so the 7Be settlement in this period was very small and no obvious distribution was found on the soil surface. Therefore, 7Be could not be used as an index to estimate the soil Wind erosion amount of tracers.