Palynological and stable isotopic study of palaeoenvironmental changes on the northeastern Tibetan plateau in the last 30,000 years

doi:10.1016/S0031-0182(99)00064-4

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（1985-2004）

	Palynological and stable isotopic study of palaeoenvironmental changes on the northeastern Tibetan plateau in the last 30,000 years
	Yan, G; Wang, FB; Shi, GR; Li, SF
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	1999-09-15
卷号	153 期号:1-4 页码:147-159
关键词	late Quaternary palynology carbon isotope Tibetan Plateau China
DOI	10.1016/S0031-0182(99)00064-4
文献子类	Article
英文摘要	The Tibetan Plateau is important in influencing the atmospheric circulation of the Northern Hemisphere. However, only a few continuous palaeoclimate records are available. Here, we present a 30,000 year pollen and carbon stable-isotope record of two lacustrine sections from the Zoige Plateau on the northeastern Tibetan Plateau. The pollen spectra show that the territorial palaeovegetational evolution experienced 7 stages in the following order: (1) 30.0 (?)-26.0 kyr B.P., alpine desert and desert-grassland vegetation; (2) 26.0-18.0 kyr B.P., grassland and alpine meadow vegetation; (3) 18.0-14.2 kyr B.P., alpine desert; (4) 14.2-10.0 kyr B.P., grasslands and meadows with islet forests; (5) 10.0-9.4 kyr B.P., marsh and meadow vegetation; (6) 9.4-4.0 kyr B.P., dark conifer islet and marsh; and finally (7) 4.0 kyr B.P.-present, marsh and subalpine meadows with scattered islets of dark conifer. The palaeoclimate was inferred from these variations in palaeovegetation, and in particular, the variation in the last 12,000 years was confirmed by the delta(13)C curve of the No. 2 pit section. Major post-glacial climatic events are clearly identified in the two study sequences, including the Late Glacial series of Bolling, Allerod, Old Dryas and Younger Dryas, and the Holocene Optimum. The climate records in the two sequences also indicate a long-term trend towards aridity in the study area. (C) 1999 Elsevier Science B.V. All rights reserved.
学科主题	Physical Geography ; Geology ; Paleontology
WOS关键词	BASIN WESTERN TIBET ; HOLOCENE ENVIRONMENTAL-CHANGES ; SUMXI CO ; QINGHAI ; CHINA
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000082598100009
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/11904]
专题	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Yan, G,Wang, FB,Shi, GR,et al. Palynological and stable isotopic study of palaeoenvironmental changes on the northeastern Tibetan plateau in the last 30,000 years[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,1999,153(1-4):147-159.
APA	Yan, G,Wang, FB,Shi, GR,&Li, SF.(1999).Palynological and stable isotopic study of palaeoenvironmental changes on the northeastern Tibetan plateau in the last 30,000 years.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,153(1-4),147-159.
MLA	Yan, G,et al."Palynological and stable isotopic study of palaeoenvironmental changes on the northeastern Tibetan plateau in the last 30,000 years".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 153.1-4(1999):147-159.