干旱区生态环境知识资源中心(Arid): Early Pleistocene (Olduvai Subchron) vegetation and climate change based on palynological records from the Yinchuan Basin of northwestern China

Arid

DOI	10.1016/j.palaeo.2020.109893
	Early Pleistocene (Olduvai Subchron) vegetation and climate change based on palynological records from the Yinchuan Basin of northwestern China
	Tian, Yanyan; Andreev, Andrei A.; Zhou, Zhu; Wei, Mingjian; Wang, Junping; Lu, Lu; Chi, Changting
通讯作者	Wei, MJ
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
EISSN	1872-616X
出版年	2020
卷号	556
英文摘要	Many recent studies focus on the relatively cold and humid interval during the Early Pleistocene Olduvai Subchron (1.95-1.77 Ma), but detailed environmental records for this interval are still rare. Here we present a high-resolution pollen record from the PL02 core (38 degrees 55'26.62 '' N, 106 degrees 36'3.82 '' E) from the Yinchuan Basin of northwestern China to reconstruct vegetation and infer climatic changes. Vegetation was dominated by desert steppe from 1.95 to 1.89 Ma suggesting a cold and dry climate. High percentages of Picea and Abies pollen indicate cold and humid conditions between 1.89 and 1.87 Ma while pollen percentages of broadleaved taxa increased rapidly between 1.87 and 1.84 Ma reflecting relatively warm and humid conditions. Palynological assemblages from 1.84 to 1.82 Ma reflect a colder and drier climate with an increase in xerophytic taxa and a decrease in conifers. Further increases of xerophytic taxa suggest a relatively cold and dry climate prevailed after 1.80 Ma. The new high-resolution palynological record suggests that environmental changes in the Yinchuan Basin are synchronous with global fluctuations. The inferred climate fluctuations show 20-kyr cycles during the Olduvai Subchron, supporting the view that climate changes in the study region were mainly controlled by orbital factors.
英文关键词	Pollen Climate changes Olduvai Subchron Yinchuan Basin
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000561370700025
WOS关键词	SPOROPOLLEN RECORD ; MODERN POLLEN ; TRANSPORT ; BOREHOLE ; PLIOCENE ; PLATEAU ; DESERT ; ASIA ; PL02
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向	Physical Geography ; Geology ; Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325742
作者单位	[Tian, Yanyan; Zhou, Zhu; Wei, Mingjian; Wang, Junping; Lu, Lu; Chi, Changting] Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China; [Andreev, Andrei A.] Alfred Wegener Inst, Res Unit Potsdam, Telegrafenberg A43, D-14473 Potsdam, Germany; [Andreev, Andrei A.] Kazan Fed Univ, Inst Geol & Petr Technol, Kremlyovskaya 18, Kazan 420008, Russia
推荐引用方式 GB/T 7714	Tian, Yanyan,Andreev, Andrei A.,Zhou, Zhu,et al. Early Pleistocene (Olduvai Subchron) vegetation and climate change based on palynological records from the Yinchuan Basin of northwestern China[J],2020,556.
APA	Tian, Yanyan.,Andreev, Andrei A..,Zhou, Zhu.,Wei, Mingjian.,Wang, Junping.,...&Chi, Changting.(2020).Early Pleistocene (Olduvai Subchron) vegetation and climate change based on palynological records from the Yinchuan Basin of northwestern China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,556.
MLA	Tian, Yanyan,et al."Early Pleistocene (Olduvai Subchron) vegetation and climate change based on palynological records from the Yinchuan Basin of northwestern China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 556(2020).