The runoff sediment has higher clay content than the surface soil, andthe splash soil has higher fine sand content. 通过对侵蚀上壤的颗粒组成分析表明,侵蚀对土壤颗粒具有选择性,径流侵蚀泥沙中粘粒含量比侵蚀表土含量高,溅蚀泥沙中细沙粒含量变高。
With the process of the sandy desertification in grassland, the contents of clay decreased. 随着草原沙漠化的加剧,土壤粘粒含量趋于减少,砂粒增多。