Formation of Ulan Buh desert and its environmental changes during the Holocene

被引：25

作者：

Chun X. ^{[1
]}

Chen F. ^{[2
]}

Fan Y. ^{[2
]}

Xia D. ^{[3
]}

Zhao H. ^{[3
]}

机构：

[1] Institute of Geography Sciences, Inner Mongolia Normal University

[2] National Laboratory of Western China's Environmental Systems, Lanzhou University

[3] Key Laboratory of Desert and Desertification, Environmental and Engineering Research ICAR, Chinese Academy of Sciences

来源：

Frontiers of Earth Science in China | 2008年 / 2卷 / 3期

基金：

中国国家自然科学基金;

关键词：

Aeolian deposition; Environmental evolution; Palaeolake evolution; Ulan Buh desert;

D O I：

10.1007/s11707-008-0039-4

中图分类号：

学科分类号：

摘要：

Extensive investigations and studies on topography, sedimentary and chronology show new evidence for the formation and evolution of the Ulan Buh desert during early Holocene. Evidence on clay-sand strata and plant roots under interdune lowlands, lake shorelines covered by plenty of Corbicula largillierti and large amounts of dry salt lakes in the central region of the desert prove that many megalakes existed in the hinterland of Ulan Buh desert. Several OSL samples collected from Aeolian sands overlying lacustrine sediments in profiles around Jilantai Salt Lake and interdune lowlands in the southern Ulan Buh desert suggest that the desert began around 7 ka B.P.. The formation of Ulan Buh desert may have resulted from the shrinking of Jilantai megalakes and sands blown from exposed loose sediments. © Higher Education Press and Springer-Verlag GmbH 2008.

引用

页码：327 / 332

页数：5

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