气候变化领域集成服务门户(CCPortal): A Holocene history of the Indian monsoon from Qilu Lake; southwestern China

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DOI	10.1016/j.quascirev.2019.106051
	A Holocene history of the Indian monsoon from Qilu Lake; southwestern China
	Hillman A.L.; O'Quinn R.F.; Abbott M.B.; Bain D.J.
发表日期	2020
ISSN	0277-3791
卷号	227
英文摘要	Understanding the magnitude, nature, and forcing mechanisms of past abrupt changes in Indian Summer Monsoon (ISM) strength is central to characterizing future manifestations in the face of global climate change, particularly at centennial time scales. Here we summarize a 6200 year record of oxygen isotopes from Lake Qilu in Yunnan Province, China. The lake is sensitive to changes in precipitation-evaporation balance and precipitates calcite, potentially providing insight into past hydroclimate through oxygen isotope analysis. Beginning at 5200 cal years BP, oxygen isotopes shift to higher values, indicative of a period of aridity and lower lake levels which persist until 3600 cal years BP. Thereafter, lake levels are extraordinarily stable until 1500 cal years BP. At 1500 cal years BP, measurable anthropogenic impacts occur, resulting in the delivery of red, iron-rich catchment soil to the lake and higher oxygen isotope values. These changes are likely the result of land clearance for the expansion of agricultural activities. The Qilu record is remarkably consistent with the record from Xingyun Lake, 10 km to the north, strongly suggesting that regional climate drivers are responsible for the changes after 5200 cal years BP and then the stability from 3600 to 1500 cal years BP. Comparison of both these records with Dongge Cave illustrate the importance of evaporative enrichment in driving higher oxygen isotope values from 5200 to 3600 cal years BP. © 2019 Elsevier Ltd
英文关键词	China; Holocene; Indian Summer Monsoon; Paleoclimatology; Stable isotopes
语种	英语
scopus关键词	Atmospheric thermodynamics; Calcite; Catchments; Isotopes; Lakes; Oxygen; China; Holocenes; Indian summer monsoon; Paleoclimatology; Stable isotopes; Climate change; aridity; catchment; climate change; global climate; Holocene; monsoon; paleoclimate; precipitation (climatology); regional climate; stable isotope; summer; China; Dongge Cave; Guizhou; Qilu Lake; Qilu Lake; Xingyun Lake; Yunnan
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151659
作者单位	Department of Environmental Science, School of Geosciences, University of Louisiana at Lafayette, 611 McKinley St, Lafayette, LA 70504, United States; Department of Geology and Environmental Science, University of Pittsburgh, 4107 O'Hara St, Pittsburgh, PA 15260, United States
推荐引用方式 GB/T 7714	Hillman A.L.,O'Quinn R.F.,Abbott M.B.,et al. A Holocene history of the Indian monsoon from Qilu Lake; southwestern China[J],2020,227.
APA	Hillman A.L.,O'Quinn R.F.,Abbott M.B.,&Bain D.J..(2020).A Holocene history of the Indian monsoon from Qilu Lake; southwestern China.Quaternary Science Reviews,227.
MLA	Hillman A.L.,et al."A Holocene history of the Indian monsoon from Qilu Lake; southwestern China".Quaternary Science Reviews 227(2020).