In the thesis, we study a peat profile with the length of about 200cm sampled from Baoxiu Basin in Yunnan province by application with some relative alkanes distributions and compounds-specific stable carbon/hydrogen isotope to discuss the changes of paleoclimate and paleoenvironment from 27kaB.

Travertine layer is the comprehensive and systematical paleoclimatic environment information carrier of the karstification record and plays an important role in the reconstruction of paleoclimatic environment and hydrogeology condition.

The Huanglashi landslide is a large-scale landslide in the Three Gorges reservoir area The main evolution periods of the landslide are closely related with the thermals of the ancient environmental climate The result is important for knowing the evolution history of the landslide and predicting and protecting against and reducing the landslide hazar