干旱区生态环境知识资源中心(Arid): Palaeoclimate and palaeoenvironmental evolution during the late Pliocene (3.04-2.88 Ma) based on pollen records from the Yinchuan Basin, Northwest China

Arid

DOI	10.1016/j.quaint.2021.04.036
	Palaeoclimate and palaeoenvironmental evolution during the late Pliocene (3.04-2.88 Ma) based on pollen records from the Yinchuan Basin, Northwest China
	Chi, Changting; Tian, Yanyan; Zhou, Zhu; Lu, Lu; Wang, Junping; Wei, Mingjian
通讯作者	Wei, MJ (corresponding author), Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China.
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2021
卷号	598 页码:15-23
英文摘要	The late Pliocene is considered the key period of transition to the Quaternary glaciations. In this paper, we present pollen records from the PL02 borehole of the Yinchuan Basin, which is located in Northwest China and has a favourable sedimentary environment for the 3.04-2.88 Ma period, to explore changes in palaeovegetation and palaeoclimate. The results showed that the vegetation in the basin was dominated by typical steppe from 3.04 to 3.01 Ma, indicating that the climate was warm and humid; from 3.01 to 2.93 Ma, the vegetation was dominated by desert steppe, and the climate gradually became drier; after 2.97 Ma, the degree of drought intensified; and from 2.93 to 2.88 Ma, the vegetation was dominated by typical steppe, and the climate became relatively humid. At approximately 2.93 Ma, the percentage and concentration of pollen from broadleaved trees and the Artemisia to Chenopodiaceae (A/C) ratio increased rapidly, indicating that the climate had suddenly become humid, which may have been related to the strengthening of the East Asian summer monsoon (EASM) caused by the final closure of the Panama Seaway. At approximately 2.90 Ma, broadleaved pollen decreased rapidly, suggesting that the climate rapidly became cold, which may indicate the onset and expansion of the Northern Hemisphere ice sheets. We suggest that climate change in the Yinchuan Basin is closely related to global environmental changes and has global characteristics.
英文关键词	Late Pliocene Pollen Paleoclimate Yinchuan Basin
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000675450800002
WOS关键词	ASIAN MONSOON INTENSIFICATION ; CORDILLERAN ICE-SHEET ; SPOROPOLLEN RECORD ; TIBETAN PLATEAU ; SUMMER MONSOON ; QAIDAM BASIN ; CLIMATE ; VEGETATION ; PACIFIC ; CLOSURE
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364432
作者单位	[Chi, Changting; Tian, Yanyan; Zhou, Zhu; Lu, Lu; Wang, Junping; Wei, Mingjian] Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China; [Tian, Yanyan] Beijing Jiaotong Univ, High Sch, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Chi, Changting,Tian, Yanyan,Zhou, Zhu,et al. Palaeoclimate and palaeoenvironmental evolution during the late Pliocene (3.04-2.88 Ma) based on pollen records from the Yinchuan Basin, Northwest China[J],2021,598:15-23.
APA	Chi, Changting,Tian, Yanyan,Zhou, Zhu,Lu, Lu,Wang, Junping,&Wei, Mingjian.(2021).Palaeoclimate and palaeoenvironmental evolution during the late Pliocene (3.04-2.88 Ma) based on pollen records from the Yinchuan Basin, Northwest China.QUATERNARY INTERNATIONAL,598,15-23.
MLA	Chi, Changting,et al."Palaeoclimate and palaeoenvironmental evolution during the late Pliocene (3.04-2.88 Ma) based on pollen records from the Yinchuan Basin, Northwest China".QUATERNARY INTERNATIONAL 598(2021):15-23.