干旱区生态环境知识资源中心(Arid): Holocene Millennial-Scale Precipitation Variations in the Asian Summer Monsoon Margin of Northwest China and Their Relation to Migrations of Monsoon Northern Boundary via Oxygen Isotope Analysis of Calcareous Root Tubes in Deserts

Arid

DOI	10.1029/2021JD035815
	Holocene Millennial-Scale Precipitation Variations in the Asian Summer Monsoon Margin of Northwest China and Their Relation to Migrations of Monsoon Northern Boundary via Oxygen Isotope Analysis of Calcareous Root Tubes in Deserts
	Gao, Youhong; Li, Zhuolun; Zhu, Ruixia
通讯作者	Li, ZL
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2022
卷号	127 期号:4
英文摘要	The Asian summer monsoon (ASM) margin of northwest China is a critical region for studying Asian monsoon variability during the Holocene. However, the pattern of precipitation variations and migration of the ASM northern boundary in arid regions during the Holocene remains unclear. In this study, we analyzed oxygen isotopes of 70 calcareous root tube (CRT) samples from the desert hinterlands in the ASM margin of northwest China, including the Badain Jaran, Tengger, Ulan Buh, and Kubuqi deserts. The CRT samples were analyzed to reconstruct millennial-scale precipitation variation patterns during the Holocene and further explored the location of the ASM northwestern boundary during the middle Holocene. Our results demonstrated that the delta O-18 values of CRTs during the late Holocene (4.0-1.0 cal kyr BP) were all less negative than those during the middle Holocene (8.0-4.0 cal kyr BP), which revealed that the precipitation decreased from the middle Holocene to the late Holocene. Moreover, an increase in delta O-18 values from the southeast to northwest revealed that the precipitation decreased. We argued that the Holocene millennial-scale precipitation changes in this region were influenced by the migrations in the ASM northern boundary. During the middle Holocene, due to the strong summer solar radiation and reduced ice sheets, the ASM northern boundary in the arid region advanced by at least 250 km to the northwest, which resulted in increased precipitation. During the late Holocene, the ASM northern boundary retreated southeastward, resulting in decreased precipitation.
英文关键词	Asian monsoon Holocene rhizolith climate change desert
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000765621000020
WOS关键词	ARID CENTRAL-ASIA ; LAST GLACIAL MAXIMUM ; ENVIRONMENTAL-CHANGES ; INNER-MONGOLIA ; TENGGER DESERT ; MOISTURE EVOLUTION ; TIBETAN PLATEAU ; HIGH-RESOLUTION ; SOIL CARBONATE ; NW CHINA
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393455
推荐引用方式 GB/T 7714	Gao, Youhong,Li, Zhuolun,Zhu, Ruixia. Holocene Millennial-Scale Precipitation Variations in the Asian Summer Monsoon Margin of Northwest China and Their Relation to Migrations of Monsoon Northern Boundary via Oxygen Isotope Analysis of Calcareous Root Tubes in Deserts[J],2022,127(4).
APA	Gao, Youhong,Li, Zhuolun,&Zhu, Ruixia.(2022).Holocene Millennial-Scale Precipitation Variations in the Asian Summer Monsoon Margin of Northwest China and Their Relation to Migrations of Monsoon Northern Boundary via Oxygen Isotope Analysis of Calcareous Root Tubes in Deserts.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,127(4).
MLA	Gao, Youhong,et al."Holocene Millennial-Scale Precipitation Variations in the Asian Summer Monsoon Margin of Northwest China and Their Relation to Migrations of Monsoon Northern Boundary via Oxygen Isotope Analysis of Calcareous Root Tubes in Deserts".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 127.4(2022).