在大量调查、观测、试验、测试的基础上，运用主成分分析和聚类分析方法对沙珠玉地区风沙土的８个典型剖面进行了数值分类，得到了满意的结果。正确地区分了风沙土和当地地带性土壤栗钙土，划分出风沙土类石灰性风沙土亚类的三个土属，即流动石灰性风沙土、半固定石灰性风沙土和固定石灰性风沙土，与传统分类和系统分类的结果一致。 On the basis of a large number of surveys, observations, experiments and tests, the principal component analysis and cluster analysis were used to classify the eight typical sections of aeolian sandy soil in Shazhuyu area, and satisfactory results were obtained. Correctly distinguishes the wind-blown soil and the local soil chestnut soil, divides the three soils belonging to the sub-group of the wind-blown and calcareous aeolian sandy soil, that is, the flowable calcareous aeolian soil, the semi-fixed calcareous aeolian soil and the fixed calcareous sand Soil, consistent with the results of traditional classification and systematic classification.