Arid
DOI10.1016/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
ISSN0277-3791
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。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Liu, Chenglin]的文章
[Zhang, Jia-Fu]的文章
[Jiao, Pengcheng]的文章
百度学术
百度学术中相似的文章
[Liu, Chenglin]的文章
[Zhang, Jia-Fu]的文章
[Jiao, Pengcheng]的文章
必应学术
必应学术中相似的文章
[Liu, Chenglin]的文章
[Zhang, Jia-Fu]的文章
[Jiao, Pengcheng]的文章
相关权益政策
暂无数据
收藏/分享

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。