Acta Geographica Sinica ›› 2010, Vol. 65 ›› Issue (1): 65-72.doi: 10.11821/xb201001007

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Three Expansions of Prehistoric Humans towards Northeast Margin of Qinghai-Tibet Plateau and Environmental Change

HOU Guang-liang1; XU Chang-jun2; FAN Qi-shun3   

  1. 1.School of Life and Geographic Science; Qinghai Normal University; Xining 810008; China; 
    2.Basic Geography Information Center of Qinghai Province; Xining 810001; China; 
    3.Qinghai Institute of Salt Lakes; CAS; Xining 810008; China
  • Received:2009-09-19 Revised:2009-11-16 Online:2010-01-25 Published:2010-01-25
  • Supported by:

    National Natural Science Foundation of China, No.40771211

Abstract:

Prehistoric human had moved forward northeast margin of Tibetan Plateau three times since Late Pleistocene,these activities are closely related to environmental evolution.The first expansion took place in 40-30 kaBP under warm-humid climate background;later,owing to the hard natural environment of Last Glacial Maximum,human activities have greatly shrunk at the plateau,and the cultural gap emerged.The rapid improvement of the natural environment driven the second expansion moved forward to the northeast margin of the Tibetan Plateau in the last deglaciation,then,persistent warm-humid climate is the guarantee of human survival and diffusion at the plateau.Majiayao culture at the east neighbourhood in 6-4 kaBP,under Holocene megathermal period background,came into the northeast of the Tibetan Plateau again,promoted the residents living on the Plateau before the end of Paleolithic and entered Neolithic Age,the social nature generated a huge progress.

Key words: prehistoric human, Qinghai-Tibet Plateau, environmental change

CLC Number: 

  • Q981