Effects of Qinghai-Tibet Plateau Uplift on Climate and Eco-Environment During the Quaternary:A Case Analysis for the Central Section of Gangdise,Tibet

The uplift of the Qinghai-Tibet Plateau has led to changes on the surface of the natural environment and closely related sedimentary records.This article focuses on Quaternary lacustrine terraces and profiles in central section of the Gangdise.A large number of pollen and U-Series dating and the ESR age data have been collected.By analyzing the Quaternary sedimentary environment of the middle Gangdese,we study the effects of the Qinghai-Tibet Plateau uplift on the Quaternary climatic and ecological environment.The uplift of the plateau not only led to several periods of glaciation that occurred in mountainous areas,but also resulted in the formation of Loess Plateau,the Asian inland Gobi and large deserts.It has caused the retreation of highland lakes,dropping of lake surface and the evolution toward salty lakes.Some drainages also changed into inland water systems,forming a corresponding variety of ecological systems,as well as a unique plateau climate.As a result,the climatic effects of plateau uplift extend to the whole world,leading to the global environment change with a sensitive response to and a strong influence on the global environment.