| Arid Central Asia saw mid-Holocene drought | |
| Xu, H (Xu, Hai)1,2; Zhou, KE (Zhou, Kang'en)2,3; Lan, JH (Lan, Jianghu)2; Zhang, GL (Zhang, Guilin)1; Zhou, XY (Zhou, Xinying)4 | |
| 通讯作者 | Xu, Hai(xuhai@tju.edu.cn) |
| 2019-03 | |
| 发表期刊 | GEOLOGY
 |
| ISSN | 0091-7613 |
| 卷号 | 47期号:3页码:255-258 |
| 产权排序 | 2 |
| 摘要 | The mid-Holocene hydroclimates and the forcing mechanisms over arid Central Asia (ACA) are hotly debated in the context of global climate change. It is widely assumed that ACA Holocene precipitation broadly followed and/or was out-of-phase with Northern Hemisphere solar insolation. However, here we show a broadly antiphase relationship between Holocene boreal solar insolation and ACA hydroclimatic trend revealed from a well-dated peat core (at the Big Black peatland; BBP) in northwestern China, southern Altai Mountains. Multiple-proxies, including peat development rate, pollen assemblages, and peat cellulose isotopic records, show wet conditions during the early and late Holocene, but drought condition during the midHolocene. This hydroclimatic pattern is similar to those extracted from other peatlands nearby and those inferred from sedimentary records in lakes in adjacent regions. The trend of delta O-18 in BBP peat cellulose is similar to that of a stalagmite in northern Xinjiang, both of which record the Holocene atmospheric precipitation delta O-18 trend over ACA areas and possibly suggest a changing proportion of glacier meltwater supply. We speculate that the mid-Holocene drought over ACA could be ascribed to: (1) the northward movement of the westerlies, such that when the westerlies moved northward under warm conditions, less water vapor was transported to ACA, and vice versa, and (2) increased evaporation under mid-Holocene warm conditions. The data from this study and the potential mechanisms suggest that drier conditions are expected over ACA areas under a continuous global warming expectation. |
| DOI | 10.1130/G45686.1 |
| 关键词[WOS] | HOLOCENE MOISTURE EVOLUTION ; NORTHERN XINJIANG ; TIEN-SHAN ; LAKE ; PRECIPITATION ; RECORD ; CHINA |
| 收录类别 | SCI ; SCIE |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China (NSFC)[41761144070] ; National Natural Science Foundation of China (NSFC)[41672169] ; External Cooperation Program of the Bureau of International Cooperation, Chinese Academy of Sciences[132B61KYSB20130003] |
| WOS研究方向 | Geology |
| 项目资助者 | National Natural Science Foundation of China (NSFC) ; External Cooperation Program of the Bureau of International Cooperation, Chinese Academy of Sciences |
| WOS类目 | Geology |
| WOS记录号 | WOS:000459755700020 |
| 出版者 | GEOLOGICAL SOC AMER, INC |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/10960 |
| 专题 | 现代环境研究室 |
| 通讯作者 | Xu, H (Xu, Hai) |
| 作者单位 | 1.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China; 2.Chinese Acad Sci, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Lab Human Evolut & Archeol Sci, Beijing 100044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, H ,Zhou, KE ,Lan, JH ,et al. Arid Central Asia saw mid-Holocene drought[J]. GEOLOGY,2019,47(3):255-258. |
| APA | Xu, H ,Zhou, KE ,Lan, JH ,Zhang, GL ,&Zhou, XY .(2019).Arid Central Asia saw mid-Holocene drought.GEOLOGY,47(3),255-258. |
| MLA | Xu, H ,et al."Arid Central Asia saw mid-Holocene drought".GEOLOGY 47.3(2019):255-258. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Arid Central Asia sa（522KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
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。
修改评论