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Oxygen isotopic composition of bulk carbonates in recent sediments from Lake Kuhai (NW China) and implications for hydroclimatic changes in headwater areas of the Yellow River on the northeastern Tibetan Plateau
Li, Xiangzhong1; Zhou, Xin2; Liu, Weiguo1,3; Fan, Guoqing4; Cheng, Peng1; Xu, Liming5
2017-02-01
发表期刊JOURNAL OF ASIAN EARTH SCIENCES
卷号134期号:2017页码:150-159
文章类型Article
摘要The water resource issue is one of the most significant problems in the Yellow River basin, and has received much attention from the public and government because of the dramatically decreased Yellow River streamflow in the last several years. In this study, oxygen isotopic compositions of bulk carbonates from Lake Kuhai in the headwaters of the Yellow River were evaluated as an indirect proxy of past Yellow River streamflow in order to place the recent flow reduction in a long-term context. The results indicated that delta 18O values of bulk carbonates from core KHC14-1 generally vary with changes in the Yellow River streamflows related to the precipitation/evaporation (temperature) ratio above the Tangnaihai hydrological station over the past 50 years. In general, the Yellow River streamflow in the headwaters area continued to decrease from the early 1980s to the late 1990s because of decreased precipitation and increased temperature. Then, the streamflow increased with enhancing precipitation over the last two decades. In addition, delta O-18 values of bulk carbonates in the Lake Kuhai core roughly correlate with the streamflows of the upper reaches of the Yellow River recorded by tree ring width over the past 800 years. The enriched delta O-18(BC) values showed that the precipitation/evaporation (P/E) ratio or streamflow was very low and the climate might be very dry in the middle of the 1400s CE in the headwaters of the Yellow River over the past 800 years. Our results suggested that changes in the P/E ratio or streamflow of the upper reaches of the Yellow River were dominated by variations in Indian Summer Monsoon precipitation over a long time scale, consistent with other records from the northeastern Tibetan Plateau. (C) 2016 Elsevier Ltd. All rights reserved.
关键词Oxygen Isotope Bulk Carbonates Streamflows Yellow River Tibetan Plateau
WOS标题词Science & Technology ; Physical Sciences
DOI10.1016/j.jseaes.2016.11.001
关键词[WOS]TEMPERATURE-CHANGES ; STABLE-ISOTOPES ; SUMMER MONSOON ; ORGANIC-MATTER ; DONGGI CONA ; QINGHAI ; MOISTURE ; VARIABILITY ; RECORD ; PRECIPITATION
收录类别SCI
语种英语
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000392767200013
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5480
专题加速器质谱中心
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China
3.Xi An Jiao Tong Univ, Sch Human Settlement & Civil Engn, Xian 710049, Peoples R China
4.Hydrol Bur Yellow River Conservancy Commiss, Zhengzhou 450003, Peoples R China
5.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
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Li, Xiangzhong,Zhou, Xin,Liu, Weiguo,et al. Oxygen isotopic composition of bulk carbonates in recent sediments from Lake Kuhai (NW China) and implications for hydroclimatic changes in headwater areas of the Yellow River on the northeastern Tibetan Plateau[J]. JOURNAL OF ASIAN EARTH SCIENCES,2017,134(2017):150-159.
APA Li, Xiangzhong,Zhou, Xin,Liu, Weiguo,Fan, Guoqing,Cheng, Peng,&Xu, Liming.(2017).Oxygen isotopic composition of bulk carbonates in recent sediments from Lake Kuhai (NW China) and implications for hydroclimatic changes in headwater areas of the Yellow River on the northeastern Tibetan Plateau.JOURNAL OF ASIAN EARTH SCIENCES,134(2017),150-159.
MLA Li, Xiangzhong,et al."Oxygen isotopic composition of bulk carbonates in recent sediments from Lake Kuhai (NW China) and implications for hydroclimatic changes in headwater areas of the Yellow River on the northeastern Tibetan Plateau".JOURNAL OF ASIAN EARTH SCIENCES 134.2017(2017):150-159.
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