气候变化领域集成服务门户(CCPortal): Vegetation History and Precipitation Changes in the NE Qinghai-Tibet Plateau: A 7,900-years Pollen Record From Caodalian Lake

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DOI	10.1029/2020PA004126
	Vegetation History and Precipitation Changes in the NE Qinghai-Tibet Plateau: A 7,900-years Pollen Record From Caodalian Lake
	Lv, Feiya; Chen, Jianhui; Zhou, Aifeng; Cao, Xianyong; Zhang, Xu; Wang, Zhenqian; Wu, Duo; Chen, Xuemei; Yan, Jingjing; Wang, Haipeng; Dong, Guanghui; Xu, Qinghai; Huang, Xiaozhong; Chen, Fahu
通讯作者	Chen, JH (通讯作者)，Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou, Peoples R China.
发表日期	2021
ISSN	2572-4517
EISSN	2572-4525
卷号	36 期号:4
英文摘要	The northeastern Qinghai-Tibet Plateau is strongly influenced by the East Asian summer monsoon (EASM), the Indian summer monsoon (ISM) and the westerlies. However, how these various circulation systems interacted in the region during the Holocene, and the nature of the associated environmental impacts, are unclear and even controversial. Here we present a high-resolution pollen record from Caodalian Lake since 7.9 ka (1 ka = 1,000 cal yr BP), which is used to reconstruct the regional vegetation history and climatic changes. In addition, we use a novel procedure for pollen-based quantitative paleoclimatic reconstruction to characterize the evolution of precipitation at Caodalian Lake and nearby Qinghai Lake. The results suggest that mean annual precipitation (P-ann) is the most significant factor controlling the fossil pollen record at both sites, and the P-ann reconstructions are well correlated with each other (r = 0.72, p < 0.001). A synthesis of the P-ann records from the two sites indicates that the precipitation in the region began to increase before 10 ka, reached a maximum during 10-5 ka, and gradually decreased thereafter. We propose that the pattern of precipitation evolution in the Qinghai Lake basin resulted from the combined effects of the ISM and EASM, with a precipitation maximum of 10-7 ka for the ISM and 7-5 ka for the EASM; both systems contributed to the regional precipitation maximum during 10-5 ka. Our well-dated and unambiguous P-ann record also provides the opportunity to reconcile paleoenvironmental reconstructions derived from different paleoenvironmental proxies from the Qinghai Lake basin.
关键词	ASIAN SUMMER MONSOON CLIMATE CALIBRATION-SET OXYGEN-ISOTOPE RECORD ARID CENTRAL-ASIA HOLOCENE VEGETATION GENGGAHAI LAKE QUANTITATIVE RECONSTRUCTIONS AEOLIAN DEPOSITS CARBON ISOTOPES INNER-MONGOLIA
英文关键词	Holocene; pollen; Qinghai Lake; Quantitative precipitation reconstruction; vegetation
语种	英语
WOS研究方向	Geology ; Oceanography ; Paleontology
WOS类目	Geosciences, Multidisciplinary ; Oceanography ; Paleontology
WOS记录号	WOS:000644566400025
来源期刊	PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254831
作者单位	[Lv, Feiya; Chen, Jianhui; Zhou, Aifeng; Zhang, Xu; Wang, Zhenqian; Wu, Duo; Yan, Jingjing; Dong, Guanghui; Huang, Xiaozhong; Chen, Fahu] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou, Peoples R China; [Cao, Xianyong; Chen, Fahu] Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Sci, Alpine Paleoecol & Human Adaptat Grp ALPHA, Beijing, Peoples R China; [Xu, Qinghai] Hebei Normal Univ, Coll Resources & Environm Sci, Hebei Key Lab Environm Change & Ecol Construct, Shijiazhuang, Hebei, Peoples R China; [Chen, Xuemei] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soils Engn, Lanzhou, Peoples R China; [Wang, Haipeng] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Lv, Feiya,Chen, Jianhui,Zhou, Aifeng,et al. Vegetation History and Precipitation Changes in the NE Qinghai-Tibet Plateau: A 7,900-years Pollen Record From Caodalian Lake[J]. 中国科学院西北生态环境资源研究院,2021,36(4).
APA	Lv, Feiya.,Chen, Jianhui.,Zhou, Aifeng.,Cao, Xianyong.,Zhang, Xu.,...&Chen, Fahu.(2021).Vegetation History and Precipitation Changes in the NE Qinghai-Tibet Plateau: A 7,900-years Pollen Record From Caodalian Lake.PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY,36(4).
MLA	Lv, Feiya,et al."Vegetation History and Precipitation Changes in the NE Qinghai-Tibet Plateau: A 7,900-years Pollen Record From Caodalian Lake".PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY 36.4(2021).