Diatom-inferred salinity changes from the Yushe paleolake indicate an aridification during the Pliocene-Pleistocene transition in north China
文献类型：期刊论文
| 作者 | Li, Ya-Meng; Ferguson, David K.; Zhao, Qi5; Wang, Yu-Fei ; Wang, Rui-Xia; Li, Cheng-Sen
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| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| 出版日期 | 2015 |
| 卷号 | 417页码:544-553 |
| 关键词 | Diatoms Aridification Paleolimnology Pliocene-Pleistocene transition Zhangcun North China |
| ISSN号 | 0031-0182 |
| DOI | 10.1016/j.palaeo.2014.10.019 |
| 文献子类 | Article |
| 英文摘要 | The global climate changed significantly during the Pliocene-Pleistocene transition, and a worldwide acidification occurred. In order to investigate the influence of the aridification during the Pliocene-Pleistocene transition in the East Asian interior, diatom assemblages from the Upper Zhangcun Formation, north China, deposited during 2.7-2.5 Ma BP were analyzed, and the lake salinity was reconstructed using diatom-environment transfer functions. A total of 74 diatom taxa were found in the sediments, belonging to 21 families and 32 genera. Four zones were established from the bottom to the top, based on the changes in the diatom assemblages over the 15.7 m sediment sequence. In Zone 1, Cyclotella iris dominated in assemblage while Caloneis westii and Staurosira construens were less presented among representative species. In Zone 2, C. iris dominated, which indicates carbonate-rich water. But in Zone 3, benthic pennate taxa such as C. westii and Anomoeoneis sphaerophora became more abundant, indicating a significant increase in water salinity, from carbonate type to sulfate type, caused by climatic change. In Zone 4, C iris became dominant again, with abundant Gomphonema intricatum and rare Pinnularia rathsbergiana and Martyana marLyi species. The salinity inferred by conductivity reconstruction increased from 1.9 ppt in Zone 2 to 4.1 pt in Zone 3. The significant changes of anion ratio (Alk / (Cl- + SO42-)) indicate an abrupt change from carbonate-rich to a sulfatic type water. The increase of salinity reflects changes in the precipitation-evaporation balance. The change from carbonate to sulfatic water inferred from the diatom assemblages could indicate a significant acidification around ca. 2.6 Ma BP on the eastern edge of the Loess Plateau. This is the most easterly record of aridification across the Eastern Asian interior and may be related with the global cooling and the development of the Northern Hemisphere glaciation. (C) 2014 Elsevier B.V. All rights reserved. |
| 学科主题 | Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 1872-616X |
| WOS关键词 | TIBETAN PLATEAU ; POLLEN RECORD ; ASIAN MONSOON ; CLIMATE ; SHANXI ; UPLIFT ; BASIN ; VEGETATION ; HISTORY ; LAKE |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000347862400040 |
| 出版者 | ELSEVIER |
| 资助机构 | China National Key Basic Research Program [2014CB954201] ; National Natural Science Foundation of China [30770148, 30990241, 41102017] ; State Key Laboratory of Systematic and Evolutionary Botany [LSEB 2012-09] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25842]  |
| 专题 | 植物研究所_系统与进化植物学研究中心_系统与进化植物学研究中心_学位论文 |
| 作者单位 | 1.Wang, Yu-Fei 2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 3.Capital Normal Univ, Coll Life Sci, Beijing 100048, Peoples R China 4.[Ferguson, David K.] Univ Vienna, Inst Palaeontol, A-1049 Vienna, Austria 5.[Li, Ya-Meng 6.Linyi Univ, Inst Geol & Paleontol, Linyi 276000, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ya-Meng,Ferguson, David K.,Zhao, Qi,et al. Diatom-inferred salinity changes from the Yushe paleolake indicate an aridification during the Pliocene-Pleistocene transition in north China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2015,417:544-553. |
| APA | Li, Ya-Meng,Ferguson, David K.,Zhao, Qi,Wang, Yu-Fei,Wang, Rui-Xia,&Li, Cheng-Sen.(2015).Diatom-inferred salinity changes from the Yushe paleolake indicate an aridification during the Pliocene-Pleistocene transition in north China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,417,544-553. |
| MLA | Li, Ya-Meng,et al."Diatom-inferred salinity changes from the Yushe paleolake indicate an aridification during the Pliocene-Pleistocene transition in north China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 417(2015):544-553. |
入库方式： OAI收割
来源：植物研究所
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