通过对黄土-古土壤全样及分离的石英样的粒度分析, 发现经历了不同程度风化成土和成壤作用的黄土-古土壤全样的粒度总体变细, 并且不同粒级组分的含量变化不尽相同. 从全样中分离出的石英颗粒, 由于基本剔除了后期成壤作用的产物, 可能较好地指示了原始粉尘的粒度组成, 其粒度参数应是东亚冬季风强度的一个较好的替代性指标. Through the analysis of the whole loess-paleosol samples and the quartz-like particle size analysis, it was found that the particle size of loess-paleosol samples that weathered into loamy and pedogenesis to varying degrees became generally finer, and the content of different fractions The quartz particles isolated from the whole sample may indicate the particle size and composition of the original dust because of the substantial removal of late-onset soil-forming products, and the grain size parameters should be one of the intensities of East Asian winter monsoon Good alternative indicator.