柴达木盆地环境演变研究进展

Progresses in environmental changes in Qaidam Basin after late 1980＇s have been comprehensively discussed. The highlights emphasized in the paper the location of environmental records and the history of environmental evolvement in Qaidam Basin. And the character of environmental evolvement are illustrated: from the late Pliocene，the climate became colder and drier. The generally evolutionary trend was well in accordance with global climate change. 11cold-warm paleoclimatic cycles have been recognized since the mid-Pleistocene,　comparing it with the loess-paleosol from Luochuan well. However, because of the uplift of Tibetan Plateau, the regional character was obvious that the climate of the late glacier age became sharply colder and drier, but the lake levels were much higher about 30 Ka BP The especial surrounding of Qaidam Basin decide that it will have significant meaning in the aspect of global change research. Because the historical conditions limited the advancement of paleoclimate change research on Qaidam Basin, the achievements obtained by the formers was rather promiscuous. So we have to make more progress for rebuilding the evolutionary story of Qaidam Basin, then compare it with ice-core record, loess-paleosol sequence and marine isotope stage.