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本文对几种土壤的孢粉组成、石英砂表面形态及土壤的化学矿物学组成特点进行研究。结果表明，成土环境演变对土壤发育特性及化学矿物学组成有较大影响。滇１号、滇２号母质沉积于温凉气候条件，滇４号则沉积于干燥的亚热带气候条件，其后土壤一直发育于低能的化学溶蚀环境中，尚处于硅铝化与铁硅铝化之间的过渡阶段。滇４号沉积于亚热带气候条件下，发育过程中曾经历过温暖的高能化学溶蚀环境，滇５号则形成于热带气候条件下，受到过明显的第四纪红土化作用影响，故两者目前成土环境虽有差异，但均具明显铁铝特性。
In this paper, the sporopollen composition of several soils, the surface morphology of quartz sand and the characteristics of chemical and mineralogical composition of soils were studied. The results show that the evolution of soil-forming environment has a great influence on soil development characteristics and chemical mineralogy composition. Dian 1 and Dian 2 were deposited in cool climate conditions while Dian 4 was deposited in dry and subtropical climate. Later, the soil was developed in a low-energy chemical erosion environment, The transitional period between. Under the subtropical climatic conditions, the deposition of Yunnan 4 experienced a warm environment of high-energy chemical dissolution in the development process. Yunnan 5 was formed under the influence of the tropical climate, and was affected by the obvious Quaternary lateriticization, Although there are differences in soil forming conditions, but both have obvious iron and aluminum characteristics.