SCIENTIA GEOGRAPHICA SINICA ›› 2002, Vol. 22 ›› Issue (1): 34-38.doi: 10.13249/j.cnki.sgs.2002.01.34

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Tendency of the Quaternary Climatic Change in Qaidam Basin and Its Causal Mechanism

WANG Jian, HUANG Qiao-hua, LIU Ze-chun   

  1. College of Geographical Sciences, Nanjing Normal University, Nanjing, Jiangsu 210097
  • Received:2001-02-08 Revised:2001-06-20 Online:2002-01-20 Published:2002-01-20

Abstract: It has been long believed that the Quaternary climate in Qaidam Basin evolved towards dry. However, evidence from lithofacies, sporo pollen, and organic carbon content has revealed that the general evolutionary trend of Quaternary climate in Qaidam Basin, i.e., glacial climate became drier and interglacial climate became wetter at about 0.8-0.6 Ma B.P. This phenomenon can probably be attributed to the uplift of Tibetan Plateau. The uplift of Tibetan Plateau made both the Asian High (Siberia High) and the Asian Low (India Low) strengthened, which consequently intensified the winter and summer monsoons, giving rise to much drier and colder glacial climate and much wetter and warmer interglacial climate in the East Asian monsoon region. The Quaternary climatic evolution of Qaidam Basin is probably influenced by Asian monsoon circulation as well. However, how to relate the uplift of the Tibetan Plateau and the intensification of the monsoon with the increase of the amplitudes of the humidity variations in Qaidamu Basin leave unsolved.

CLC Number: 

  • P534.63/P532