红土(主要指第三纪红土母质上发育的红色黄土,以及第四纪红色粘土的泥积物,群众概称为“红土”。)在青海分布面积广,特别是湟水南岸、黄河沿岸分布尤为广泛。此类地区水土流失严重,覆盖在红土坡面上的黄土被大量剥蚀,造成大面积的红土裸露,形成黄土“帽子”、红土“衣裙”的自然景观。加之该地区雨量集中,暴雨严 Laterite (mainly refers to the red loess developed on the parent material of the Tertiary laterite and the sediment of the Quaternary red clay, which the masses generally refer to as “laterite.”) In Qinghai, it is widely distributed, especially on the south bank of Huangshui River and along the Yellow River Especially extensive. Soil and water loss in such areas is serious, the loess covered on the red soil slopes is greatly eroded, exposing a large area of ​​red soil to form a natural landscape of loess “hat” and laterite “dress”. Coupled with the concentration of rainfall in the region, stormy