焉耆盆地土壤盐渍化状况的主成分分析

Principal component analysis of soil salinization in Yanqi Basin

利用主成分分析法分析了焉耆盆地内荒地和耕地的土壤盐分特征,结果表明,荒地内土壤盐分表聚强烈,基本无自然淋洗过程;而耕地内土壤盐分存在多次积盐和脱盐过程,培面中盐分分布比较均匀。第一主成分综合反映了区内土壤盐渍化程度,第二和第三主成分联合反映了土壤的碱性特征。

Based on the principal component analysis (PCA) of soil salinization fectors in Yanqi Basin, it is discovered that soil salinity in the wasteland cumulates strongly toward to the surface and there is hardly natural eluviation in it. But there are the phenomena of salinity cumulation and eluviation in the arable land, and the soil salinity is relatively even in the profile. The first principal component can denote the degree of soil salinity, and the second and third principal component can denote the degree of soil alkalinity.