通过对科尔沁沙地奈曼旗普通风砂土中粘土矿物的研究，结果表明这类土壤中的粘土矿物主要是伊利石，其次为高岭石、绿泥石、伊利石－蒙脱石混层矿物；它们主要来源于母质，其次来自成土过程，降尘输入量极有限。随成土过程不断进行，粘土矿物主要遵循铝硅酸盐矿物→绿泥石→绿泥石－蒙脱石→蒙脱石顺序演变。由于母质本身贫乏、成土过程较弱以及比重差异使蒙脱石有独特的搬运与沉降行为，共同造成土壤中缺乏蒙脱石。 Through the study of clay minerals in common wind sand of Naimanqi in Horqin sandy land, the results show that the clay minerals in these soils are mainly illite, followed by kaolinite, chlorite and illite-smectite Minerals; they mainly come from the parent material, followed by the process of soil formation, with a very limited amount of dustfall input. As the process of soil formation continues, the clay minerals follow the sequence of aluminosilicate → chlorite → chlorite-montmorillonite → montmorillonite. Due to the poor parent material itself, the weak soil formation process and the differences in specific gravities make the montmorillonite unique handling and sedimentation, resulting in the absence of montmorillonite in the soil.