巴丹吉林沙漠形成演变的若干问题

Formation and Evolution of Badain Jirin Sandy Desert,China

巴丹吉林沙漠是我国第二大沙漠,面积为49200km^2,其产生至少始于中更新世早期,受冰期和间冰期气候变化的影响,呈波动形式,经历发展与固定的变化过程;高大沙山则是在这一过程中经过风的长期作用而形成;与沙山相间分布的湖泊之成因和演变主要受沙山形成和现状的影响。

Badain Jirin sandy desert is the second largest sand desert in China,it covers 49,200 Sq. km. It formed at least as early as middle-Pleistocene and underwent changed processes of development and fixation with the influence of climate changed during glacial and interglacial epoch. The megadunes were formed by winds during the long changed processes and it was also the main factor for the cause of formation and evolution of the salt lakes which inter-distributed between the megadunes.