采用现代微观测试技术手段，对特征精细结构的典型粘土矿物在风化过程中的蚀变演化、及其过渡结构状态等开展深入系统的研究，揭示风化蚀变过程中元素的淋滤与结构演化；研究土壤剖面中发现的非典型过渡阶段结构状态粘土矿物的晶体结构、化学组成、结晶形态、及其成因，探究沉积型土壤剖面中非典型过渡阶段结构状态粘土矿物的形成转化、及其环境介质条件。结合量子化学与成因矿物学的理论方法，弄清粘土矿物晶体化学对风化过程中过渡阶段结构状态粘土矿物形成的约束，建立过渡状态结构与原生粘土矿物母质、及其发育演化的气候环境条件之间的联系。

To obtain better understanding of the leaching of chemical components and the structure evolution of clay minerals during the weathering process, alteration and their transition structure of clay minerals with typical fine structure are investigated using modern microscopic methods. In addition, study is also undertaken to understand the crystal chemistry, crystal structure, morphology, and formation of no-typical transition clay species in the soil profile,alteration and environmental conditions of no-typical transition clay species in sedimentary soil profiles will be deeply investigated. The contraction of crystal chemistry of pre-existing clay minerals on the formation of transition structure of clay species is deciphered based on genetic mineralogy and quantum chemistry, and the relation is definied between transition structure and parent clay minerals as well as the climate and environmental conditions.