气候变化领域集成服务门户(CCPortal): Late Cenozoic continuous aridification in the western Qaidam Basin: evidence from sporopollen records

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DOI	10.5194/cp-9-1863-2013
	Late Cenozoic continuous aridification in the western Qaidam Basin: evidence from sporopollen records
	Miao, Y. F.; Fang, X. M.; Wu, F. L.; Cai, M. T.; Song, C. H.; Meng, Q. Q.; Xu, L.
通讯作者	Fang, XM (通讯作者)
发表日期	2013
ISSN	1814-9324
EISSN	1814-9332
起始页码	1863
结束页码	1877
卷号	9 期号:4
英文摘要	Cenozoic climate changes in inner Asia provide a basis for understanding linkages between global cooling, the Tibetan Plateau uplift, and possibly the development of the East Asian monsoon. Based on a compilation of palynological results from the western Qaidam Basin, this study reconstructed a 15-million-year (Ma) record of changing vegetation and paleoclimates spanning the middle Miocene to present (comprising two series: similar to 18-5 Ma and similar to 3.1-0 Ma, respectively). The thermophilic percentages were highest between 18 and 14 Ma, and decreased after 14 Ma, closely corresponding to the Middle Miocene Climatic Optimum (MMCO) between 18 and 14Ma and the following global climatic cooling between 14 and 5 Ma. At the same time, decreases in the xerophytic and coniferous taxa percentages, and the increasing logarithmic ratio of non-arboreal pollen to arboreal pollen (ln (NAP/AP)), reveal the continuous aridification across both the basin and surrounding mountains. Between similar to 3.1 and 0 Ma, the percentages of the thermophilic, xerophytic and coniferous pollen as well as the ln (NAP/AP) imply further cooling and drying in this region since 3.1 Ma. We argue that these vegetation and climate patterns during the late Cenozoic western Qaidam Basin are primarily a result of the global cooling, with the Tibetan Plateau uplift and East Asian summer monsoon having contributions of lesser importance.
关键词	NE TIBETAN PLATEAU RESOLUTION MAGNETO STRATIGRAPHY SUMMER MONSOON EVOLUTION TIAN-SHAN RANGE ASIAN MONSOON TARIM BASIN TECTONIC UPLIFT CLIMATE-CHANGE ISOTOPIC CONSTRAINTS GEOCHEMICAL RECORDS
语种	英语
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000323412600031
来源期刊	CLIMATE OF THE PAST
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258170
推荐引用方式 GB/T 7714	Miao, Y. F.,Fang, X. M.,Wu, F. L.,et al. Late Cenozoic continuous aridification in the western Qaidam Basin: evidence from sporopollen records[J]. 中国科学院青藏高原研究所,2013,9(4).
APA	Miao, Y. F..,Fang, X. M..,Wu, F. L..,Cai, M. T..,Song, C. H..,...&Xu, L..(2013).Late Cenozoic continuous aridification in the western Qaidam Basin: evidence from sporopollen records.CLIMATE OF THE PAST,9(4).
MLA	Miao, Y. F.,et al."Late Cenozoic continuous aridification in the western Qaidam Basin: evidence from sporopollen records".CLIMATE OF THE PAST 9.4(2013).