Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.quascirev.2016.07.016 |
The Holocene history of Lop Nur and its palaeoclimate implications | |
Liu, Chenglin1,2; Zhang, Jia-Fu2; Jiao, Pengcheng1; Mischke, Steffen3 | |
通讯作者 | Zhang, Jia-Fu |
来源期刊 | QUATERNARY SCIENCE REVIEWS |
ISSN | 0277-3791 |
出版年 | 2016 |
卷号 | 148页码:163-175 |
英文摘要 | The Holocene hydrological history of Lop Nur in northwestern China’s Tarim Basin and its response to climate conditions are inferred from a relatively well-dated multi-proxy record including grain-size, pollen and spores, and soluble salt data. A dated pit section (YKD0301) with a depth of 570 cm in the center of the dry Lop Nur Basin was investigated. The sediments contain a total of twenty fining-upward cycles as a result of strong discharge from the catchment to the lake during relatively wet conditions. The fluvial sediments were probably widely dispersed by wind-driven waves and currents in the large and shallow basin of Lop Nur. Higher runoff and dilution of lake waters are also indicated by lower contents of soluble salt in the sediments and recorded ostracod shells of brackish and oligohaline to freshwater species. In contrast, sediment sections with smaller mean grain size and fewer flood layers are dominated by aeolian sediments which were accumulated during drier periods. Ostracod shells are mostly lacking from these sections, suggesting a higher salinity in the lake. Lop Nur experienced six stages during the last 9 ka. Relatively wet conditions existed between 9.0-8.9, 8.7-5.1 and 2.4-1.8 ka, with periods of increased aridity in between and after 1.8 ka. The lowest salinity was recorded between 8.7 and 5.1 ka which represents the wettest phase during the last 9 ka and probably the regional Holocene Optimum. Relatively wet climate conditions between 2.4 and 1.8 ka and dry conditions afterwards possibly first fostered and later on caused the devastation of the ancient Loulan Kingdom in the region. The uppermost sediments of the section represent a massive salt crust formed during the final desiccation of the lake in the last century. The effective moisture change pattern of the Lop Nur region is roughly consistent with synthesized Holocene moisture records for western China dominated by the westerlies. (C) 2016 Elsevier Ltd. All rights reserved. |
英文关键词 | Grain size Pollen and spores Lop Nur Tarim Basin Xinjiang Arid central Asia Holocene |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; Iceland |
收录类别 | SCI-E |
WOS记录号 | WOS:000383313100012 |
WOS关键词 | TARIM RIVER-BASIN ; ARID CENTRAL-ASIA ; BOSTEN LAKE ; TIBETAN PLATEAU ; MOISTURE EVOLUTION ; EOLIAN ACTIVITY ; QAIDAM BASIN ; GRAIN-SIZE ; ENVIRONMENTAL-CHANGES ; LACUSTRINE SEDIMENTS |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
来源机构 | 北京大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/195869 |
作者单位 | 1.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, 26 Baiwanzhuang Rd, Beijing 100037, Peoples R China; 2.Peking Univ, Coll Urban & Environm Sci, Dept Geog, MOE Lab Earth Surface Proc, Beijing 100871, Peoples R China; 3.Univ Iceland, Fac Earth Sci, IS-101 Reykjavik, Iceland |
推荐引用方式 GB/T 7714 | Liu, Chenglin,Zhang, Jia-Fu,Jiao, Pengcheng,et al. The Holocene history of Lop Nur and its palaeoclimate implications[J]. 北京大学,2016,148:163-175. |
APA | Liu, Chenglin,Zhang, Jia-Fu,Jiao, Pengcheng,&Mischke, Steffen.(2016).The Holocene history of Lop Nur and its palaeoclimate implications.QUATERNARY SCIENCE REVIEWS,148,163-175. |
MLA | Liu, Chenglin,et al."The Holocene history of Lop Nur and its palaeoclimate implications".QUATERNARY SCIENCE REVIEWS 148(2016):163-175. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。