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通过对黄土微结构的变化、化学成分的组成，以及电子显微扫描鉴定，进行综合分析对比，探溯古土壤层的生成环境．
Through the change of microstructure of the loess, the composition of the chemical composition, as well as the identification by electron microscopy, a comprehensive analysis and comparison were made to trace the formation environment of paleosol layer.