论文部分内容阅读
选用活性酸、代换酸、水解酸、活性铝、阳离子代换量和盐基饱和度共6个因子作为模糊聚类的指标,对20个黄棕壤、黄褐土土样的测定结果进行模糊聚类分析,其结果20个土样能被很好的分为黄棕壤与黄褐土两类,与传统的剖面研究法所得结果是一致的.对20个土样的分析结果进行t检验,六个指标的t值均达显著或极显著水平.结果表明,模糊聚类分析可以用于土壤分类,并能使分类更客观,有利于分类的定量化和标准化;选用的6个指标可以作为区分黄棕壤、黄褐土的诊断特征;由于诊断性质的明显差异,又能用模糊聚类法分为两类,说明黄棕壤与黄褐土作为两个土类是正确的.
A total of six factors, active acid, substitutional acid, hydrolytic acid, active aluminum, cation substitution and base saturation, were selected as indexes of fuzzy clustering. The determination results of 20 yellow-brown soil and yellow-brown soil samples Fuzzy clustering analysis, the results of 20 soil samples can be well divided into yellow brown soil and yellow cinnamon soil, and the results obtained by the traditional section method is consistent with the analysis of 20 soil samples for t The results showed that the fuzzy clustering analysis can be applied to soil classification and can make the classification more objective and conducive to the quantification and standardization of classification. The six indicators It can be used as a diagnostic feature to distinguish yellow-brown soil and yellow-brown soil. Due to the obvious difference in diagnostic properties, it can be divided into two types by fuzzy clustering method, which shows that yellow-brown soil and yellow-cinnamon soil are correct as two soil types.