干旱区生态环境知识资源中心(Arid): Holocene aeolian activity triggered by climate change and endorheic-exorheic drainage transition in the Headwater Region of the Yellow River, Tibetan Plateau

Arid

DOI	10.1016/j.geomorph.2023.108890
	Holocene aeolian activity triggered by climate change and endorheic-exorheic drainage transition in the Headwater Region of the Yellow River, Tibetan Plateau
	Hu, Guangyin; Hu, Jingjing; Yu, Lupeng; Yang, Linhai; Liu, Xiangjun; Xiao, Fengjun; Dong, Zhibao
通讯作者	Hu, GY
来源期刊	GEOMORPHOLOGY
ISSN	0169-555X
EISSN	1872-695X
出版年	2023
卷号	441
英文摘要	The Headwater Region of the Yellow River (HRYR) is located in the northeastern Tibetan Plateau at an altitude higher than 4000 m above sea level. Modern aeolian sandy land is widely distributed in the HRYR, and the reactivation of paleo aeolian sediments under the disturbance of climate change and human activities has become a hot issue since the past decades. However, the chronology of paleo aeolian sediments in this region remains poorly understood. In this study, 22 samples of aeolian sediments were collected from six sections and dated using optical stimulated luminescence (OSL). Combining the OSL data with 15 previously published OSL ages from three sections in the HRYR, the following results were obtained. The oldest aeolian sand sediments in the HRYR are dated at 7.12 +/- 0.39 ka. The remaining aeolian sediments were deposited in the late Holocene, ranging between 3.29 +/- 0.42 ka and 0.18 +/- 0.01 ka. In the late Holocene, phases of intensifying aeolian activities were recorded by clusters of OSL ages at 2.12-1.81 ka, 1.30-1.26 ka, and the Little Ice Age. In our dataset (37 OSL ages), 27 ages correspond to the past millennium and the aeolian activity phases mainly occurred in the Little Ice Age. The relatively scarce aeolian sand deposits in the early Holocene is likely due to the existence of Maduo Paleolake, which maintained a high water stand, inhibiting the availability of sediments for wind erosion. The absence of mid-Holocene aeolian sediments in this region is attributed to the optimum climate during this period although the HRYR had opened around 7.0 ka BP. Coupled with the drier and cooler climate, the exposure of lacustrine sediments during the endorheic-exorheic drainage transition (EEDT) of the HRYR ultimately triggered enhanced aeolian activities in the late Holocene.
英文关键词	Aeolian desertification OSL dating Hydrological geomorphology Maduo Paleolake
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001106690700001
WOS关键词	QINGHAI LAKE ; FLUVIAL INCISION ; MOJAVE DESERT ; GONGHE BASIN ; QAIDAM BASIN ; ZOIGE BASIN ; DESERTIFICATION ; SEDIMENTS ; LUMINESCENCE ; LOESS
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396725
推荐引用方式 GB/T 7714	Hu, Guangyin,Hu, Jingjing,Yu, Lupeng,et al. Holocene aeolian activity triggered by climate change and endorheic-exorheic drainage transition in the Headwater Region of the Yellow River, Tibetan Plateau[J],2023,441.
APA	Hu, Guangyin.,Hu, Jingjing.,Yu, Lupeng.,Yang, Linhai.,Liu, Xiangjun.,...&Dong, Zhibao.(2023).Holocene aeolian activity triggered by climate change and endorheic-exorheic drainage transition in the Headwater Region of the Yellow River, Tibetan Plateau.GEOMORPHOLOGY,441.
MLA	Hu, Guangyin,et al."Holocene aeolian activity triggered by climate change and endorheic-exorheic drainage transition in the Headwater Region of the Yellow River, Tibetan Plateau".GEOMORPHOLOGY 441(2023).