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采集漳浦、泉州、莆田等地同一生物气候带和相近的地貌类型部位的赤红壤,其母岩分别为玄武岩、辉长岩、花岗岩、凝灰熔岩残积物的8个代表性剖面,进行20项指标对比研究.用聚类分析和主组元分析方法分析结果表明,土壤母岩分为酸性岩和基性岩两大类,第一主组元对表达11项指标信息量的贡献率达69.14%,粘粒游离铁、表观代换量、土壤色调对其有较强的正向负荷,而土壤色值、砂/粘比值、粘粒全钾和粘粒SiO_2/R_2O_3则有较强的逆向负荷.反映了赤红壤形成特征上的主要差异在于差铁程度和粘粒形成作用上.
The collected red latosas of the same bioclimatic zone and similar landform types in Zhangpu, Quanzhou and Putian, and their parent rocks were 8 representative sections of basalt, gabbro, granite and tuff lava, respectively. The results of cluster analysis and principal component analysis show that the soil parent rock is divided into two types: acidic rocks and basic rocks, and the contribution of the first principal component to the information amount of 11 indicators 69.14%, clay free iron, apparent substitution, soil color tone had a strong positive load on it, while soil color value, sand / clay ratio, total clay and clay of SiO_2 / R_2O_3 Of the reverse load reflects the formation of latosolic soil characteristics of the main differences in the degree of poor iron and the formation of cosmids.