气候变化领域集成服务门户(CCPortal): Seasonal rainfall patterns in stable carbon isotopes in the Mu Us Desert, northern China during the early and middle Holocene

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DOI	10.1007/s00382-020-05504-y
	Seasonal rainfall patterns in stable carbon isotopes in the Mu Us Desert, northern China during the early and middle Holocene
	Shu P.; Wang H.; Zhou W.; Ao H.; Niu D.; Wen X.; Li B.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-03-04
英文摘要	Intense Asian summer monsoon rainfall responds to high boreal summer insolation and environmental feedbacks in the early and middle Holocene. However, it is unclear what role of the Asian summer monsoon strength might have played for the heterogeneous wetness pattern in northern China. Here, we report two wet periods in the early and middle Holocene by paleosol, lacustrine, and peat stratigraphies in the southeast Mu Us Desert, and that early-Holocene wetness records are common and seen in valleys and missing from valley walls while mid-Holocene wetness records are found everywhere in the region. The preliminary analysis of the stable carbon isotopic composition (δ13C) of soil carbonate and organic carbon from a riverine dune–paleosol sequence in a river valley reveals that wet springs/falls with dry summers frequently prevailed in the early Holocene, while wet summers with dry springs/falls became predominant in the middle Holocene. Strong-wind and low-temperature springs and falls on valley walls and uplands cause eolian sedimentation faster than soil formation but weak-wind and warmer-soil temperature in valleys facilitate vegetation metabolism and thus soil formation. Warm summer rainfall with no strong northwesterly wind causes paleosol, lacustrine and peat formation either in valleys or on uplands. The early-Holocene heterogeneous and middle-Holocene uniform wetness records are indeed controlled by seasonal hydroclimate conditions but not a single factor of summer monsoon rainfall strength in the southeast Mu Us Desert. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Holocene wetness patterns; Northern China; Seasonal monsoon rainfall changes; Stable carbon isotopes; The southeast Mu Us Desert
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183406
作者单位	State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences (IEECAS), Xi’an, 710061, China; Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi’an, 710061, China; Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Xi’an AMS Center of IEECAS, Xi’an, 71061, China; Interdisciplinary Research Center of Earth Science Frontier, Beijing Normal University, Beijing, 100875, China; Xi’an Jiaotong University, Xi’an, 710049, China; School of Geography, Lingnan Normal University, Zhanjiang, 524048, China; School of Geography, South China Normal University, Guangzhou, 510631, China
推荐引用方式 GB/T 7714	Shu P.,Wang H.,Zhou W.,et al. Seasonal rainfall patterns in stable carbon isotopes in the Mu Us Desert, northern China during the early and middle Holocene[J],2021,56(2021-03-04).
APA	Shu P..,Wang H..,Zhou W..,Ao H..,Niu D..,...&Li B..(2021).Seasonal rainfall patterns in stable carbon isotopes in the Mu Us Desert, northern China during the early and middle Holocene.Climate Dynamics,56(2021-03-04).
MLA	Shu P.,et al."Seasonal rainfall patterns in stable carbon isotopes in the Mu Us Desert, northern China during the early and middle Holocene".Climate Dynamics 56.2021-03-04(2021).