Diatom-inferred salinity changes from the Yushe paleolake indicate an aridification during the Pliocene-Pleistocene transition in north China

doi:10.1016/j.palaeo.2014.10.019

	Diatom-inferred salinity changes from the Yushe paleolake indicate an aridification during the Pliocene-Pleistocene transition in north China
	Li, Ya-Meng ; Ferguson, David K.; Zhao, Qi 1; Wang, Yu-Fei; Wang, Rui-Xia ; Li, Cheng-Sen
	2015
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	417 页码:544-553
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.
关键词	Diatoms Aridification Paleolimnology Pliocene-Pleistocene transition Zhangcun North China
学科领域	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
DOI	10.1016/j.palaeo.2014.10.019
收录类别	SCI
语种	英语
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)
WOS记录号	WOS:000347862400040
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1872-616X
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]
作者邮箱	liyameng@gmail.com ; wangyf@ibcas.ac.cn
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25842
专题	系统与进化植物学国家重点实验室
作者单位	1.[Li, Ya-Meng 2.Linyi Univ, Inst Geol & Paleontol, Linyi 276000, Shandong, Peoples R China 3.Wang, Yu-Fei 4.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 5.Capital Normal Univ, Coll Life Sci, Beijing 100048, Peoples R China 6.[Ferguson, David K.] Univ Vienna, Inst Palaeontol, A-1049 Vienna, Austria
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.

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
Diatom_inferred_sali（2708KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文