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题名: Climatic and hydrological variations during the past 8000 years in northern Xinjiang of China and the associated mechanisms
作者: Ran, M; Zhang, CJ(张成君); Feng, ZD
收录类别: SCIE
出版日期: 2015-02-09
刊名: QUATERNARY INTERNATIONAL
卷号: 358, 页码:21-34
出版者: ELSEVIER
出版地: OXFORD
英文摘要: This paper reviews the published literature regarding the climatic and hydrological variations of the past 8000 years in the northern Xinjiang of China in hope that some of the controversies surrounding the Holocene climate history can be reconciled. Based on the well-tested premise that the overall relationship between the A/C ratios and the bioclimates in arid and semi-arid areas of China still holds, we compared the A/C ratio-based SMI (Standardized Moisture Index) of five selected lacustrine sequences. Our comparison shows that the regional average SMI had a general rising trend, and the rising trend was reasonably corroborated by other pollen proxies. The rising trend can be explained by invoking its climatic linkage with the North Atlantic Ocean, and a possible linkage with ENSO is an additional or an alternative mechanism for explaining the rising trend. The nearly parallel rising trends of seven delta O-18-indicated SSI curves (Standardized Salinity Index) mean that the lake-water salinity has been rising since similar to 8.0 cal. ka BP. The rising trend can be explained by invoking the Holocene variations in the areal extent of ice covers in the Tianshan Mountains and the Altay Mountains. That is, the persistent shrinking of the ice extent in the mountains generated less and less melting water supplies to the lakes and thus resulted in saltier and saltier waters in the lakes. The contradiction between the increasing trend of the basin-wide moisture and the increasing trend of the lake-water salinity can be reconciled as follows: the increasing trend of the precipitation accompanied by the lowering tend of the temperature might have increasingly enhanced the effective soil moisture in northern Xinjiang, but the increase in the basin-wide moisture was not enough to compensate for the decrease in the lake inflowing water resulted from the shrinkage of ice-covered areas in the mountains. (C) 2014 Elsevier Ltd and INQUA. All rights reserved.
关键词: Northern Xinjiang ; A/C ratio ; delta O-18 data ; Holocene moisture change ; Holocene salinity change
作者部门: [Ran, Min] Southwest Univ, Sch Geog Sci, Chongqing 400715, Peoples R China ; [Zhang, Chengjun] Lanzhou Univ, Coll Geol Sci & Mineral Resources, Lanzhou 730000, Peoples R China ; [Feng, Zhaodong] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
通讯作者: Feng, ZD (reprint author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, 818 Beijing Rd South, Urumqi 830011, Peoples R China.
学科分类: Physical Geography; Geology
文章类型: Article
所属项目编号: Chinese Nature Science Foundation [U1203821L08, 40671190] ; U.S. National Science Foundation [NSF-BCS-06-52304]
所属项目名称: 国家自然科学基金项目 ; 美国国家科学基金会项目
项目资助者: NSFC ; US NSF
语种: 英语
DOI: 10.1016/j.quaint.2014.07.056
ISSN号: 1040-6182
WOS记录号: WOS:000349629300004
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/120669
Appears in Collections:地质科学与矿产资源学院_期刊论文

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Recommended Citation:
Ran, M,Zhang, CJ,Feng, ZD. Climatic and hydrological variations during the past 8000 years in northern Xinjiang of China and the associated mechanisms[J]. QUATERNARY INTERNATIONAL,2015,358:21-34.
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