| GDGTs-based quantitative reconstruction of water level changes and precipitation at Daye Lake, Qinling Mountains (central-east China), over the past 2000 years | |
| Chen, Lin1; Huang, Zhendong1; Niu, Lili1; Dong, Weimiao2,3; Xiao, Shun4; Chen, Shengqian1; Zhao, Jiaju5; Wu, Duo1; Zhou, Aifeng1 | |
| Corresponding Author | Dong, Weimiao(dongwm@fudan.edu.cn) ; Zhou, Aifeng(zhouaf@lzu.edu.cn) |
| 2021-09-01 | |
| Source Publication | QUATERNARY SCIENCE REVIEWS
 |
| ISSN | 0277-3791 |
| Volume | 267Pages:9 |
| Abstract | Alpine lakes are natural rain gauges, and reconstructing changes in their water level is a key to understanding the regional hydrological environment, climate change and vegetation evolution. Precipitation in the northern and the southern parts of the eastern monsoon region of China exhibits a centennial scale inverse relationship over the past 2000 years; however, there is substantial uncertainty regarding the temporal range of this dipolar pattern. In order to better understand this north-south pattern of precipitation variation and its driving mechanism, we analyzed isoGDGTs biomarker compounds in a sediment core from alpine Daye Lake, in the Qinling Mountains, in the north-south climatic transition zone of eastern China. Measurements of %Cren were used to reconstruct changes in lake level over the past 2000 years. The results show that, from 240 to 1300 CE, prior to the Little Ice Age, the lake level changes were consistent with the precipitation record for the northern part of eastern China, with the lake reaching its highest level of 25 +/- 7.17 mat 555 CE; subsequently, the lake fell to its lowest level of 12 +/- 7.17 m at 1030 CE. During the Little Ice Age, the water level maintained an increasing trend, especially during the last three centuries, when it remained above 20 +/- 7.17 m, which is consistent with the precipitation record from southern China. The results indicate that the climatically transitional Qinling region has a complex history of climate change. During the early part of the record (240-130 0 CE), the level of Daye Lake and the East Asian summer monsoon precipitation were in phase, controlled mainly by the strength of the East Asian summer monsoon. In contrast, since the Little Ice Age (1300 CE to the present), under the influence of ENSO, the westward extension and southward retreat of the West Pacific Subtropical High caused the rain belt to shift southward, decreasing the water vapor supply to the Qinling Mountains. The ascent of moisture-bearing air over the Qinling Mountains resulted in orographic rainfall, while the weakening of evaporation during the Little Ice Age reduced the evaporation of water vapor and also contributed to the continued rise of the level of Daye Lake. The abundant precipitation in the Qinling region during the Little Ice Age provided water resources to sustain human activities in the downstream Weihe Plain, but was also a major cause of flooding. (C) 2021 Elsevier Ltd. All rights reserved. |
| Keyword | Daye lake Water depth reconstruction Precipitation pattern Little ice age %Cren |
| DOI | 10.1016/j.quascirev.2021.107099 |
| WOS Keyword | DIALKYL GLYCEROL TETRAETHERS ; TIBETAN PLATEAU IMPLICATIONS ; ENVIRONMENTAL CONTROLS ; LIPID DISTRIBUTIONS ; MEMBRANE-LIPIDS ; ASIAN MONSOON ; QINGHAI ; HOLOCENE ; SOILS ; CLIMATE |
| Indexed By | SCI ; SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41771208] ; National Natural Science Foundation of China[41790421] |
| WOS Research Area | Physical Geography ; Geology |
| Funding Organization | National Natural Science Foundation of China |
| WOS Subject | Geography, Physical ; Geosciences, Multidisciplinary |
| WOS ID | WOS:000689256400007 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ieecas.cn/handle/361006/16943 |
| Collection | 古环境研究室 |
| Corresponding Author | Dong, Weimiao; Zhou, Aifeng |
| Affiliation | 1.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China 2.Fudan Univ, Dept Cultural Heritage & Museol, Shanghai 200433, Peoples R China 3.Fudan Univ, Inst Archaeol Sci, Shanghai 200433, Peoples R China 4.Shaanxi Normal Univ, Dept Environm Sci, Xian 710119, Peoples R China 5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Lin,Huang, Zhendong,Niu, Lili,et al. GDGTs-based quantitative reconstruction of water level changes and precipitation at Daye Lake, Qinling Mountains (central-east China), over the past 2000 years[J]. QUATERNARY SCIENCE REVIEWS,2021,267:9. |
| APA | Chen, Lin.,Huang, Zhendong.,Niu, Lili.,Dong, Weimiao.,Xiao, Shun.,...&Zhou, Aifeng.(2021).GDGTs-based quantitative reconstruction of water level changes and precipitation at Daye Lake, Qinling Mountains (central-east China), over the past 2000 years.QUATERNARY SCIENCE REVIEWS,267,9. |
| MLA | Chen, Lin,et al."GDGTs-based quantitative reconstruction of water level changes and precipitation at Daye Lake, Qinling Mountains (central-east China), over the past 2000 years".QUATERNARY SCIENCE REVIEWS 267(2021):9. |
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