通过对喀斯特地区的形态学、水文地质学、水文学和脉冲试验方法，将研究程度较为详细的贵州普定后寨地下河流域作为样本区进行试验研究。可以划分成八个空间结构类型，它们都具有各自的地表、地下结构特征，在形态、水文地质、水文过程、水化学和脉冲波上均有各自的反响，并且从中得出该流域的喀斯特地貌主要是正向演化过程，但在西部形成反向演化过程。

A further karstlogical research including morphology, hydrogeology, hydrology and pulse test is done in an experimental area the Houzhai underground river basin, Puding county, Guizhou Province. Eight types of spatial structures are obtained by cluster analysis. These are Fenglin basin, Fenglin clay platform, revived, Fenglin doline depression, oldfenglin doling depression, Fenglin (or fengcony) valley and Fenglin depression. They have their own surface and underground structral features, so their characteristics of morphology, hydrogeology, hydrological process, hydrochemistry and pulse waves are different. By analysing these characteristics on the basis of observations it can be seen that different hydrology process curves and the respons curves of puls test may reflect distinct underground structral features. Further, it is believed that the Karst landform evolution in the basin is mainly a positive evolutionary process from Fenglin doline to Fenglin basin accoding to the study on the spatial structure. But reverse evolutionary process from fenglin basin to Fenglin doline has been formed in the western region.