干旱区生态环境知识资源中心(Arid): Holocene Moisture Variation Recorded by Aeolian Sand- Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai-Tibetan Plateau, China

Arid

	Holocene Moisture Variation Recorded by Aeolian Sand- Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai-Tibetan Plateau, China
	Liu Bing; Zhao Hui; Jin Heling; Chen Fahu
来源期刊	Acta Geologica Sinica
ISSN	1000-9515
出版年	2020
卷号	94 期号:3 页码:668-681
英文摘要	The northeastern Qinghai-Tibetan Plateau (QTP) of China is located at the triple junction of the Asian winter and summer monsoons and the westerlies, where paleoclimatic evolution has an important scientific significance for recognizing the spatial-temporal pattern of Asian monsoons in the past and predicting environmental change in the future. Nevertheless, the framework of the Holocene moisture variation and related mechanisms remain controversial, owing to complex hydroclimatic conditions triggered by the landform of the large mountain-arid basin. Here, we employed geochemical proxies from typical aeolian sand-palaeosol sequences in the Gonghe Basin, northeastern QTP, together with Optically Stimulated Luminescence (OSL) dating, to reconstruct the pattern of effective moisture variation and associated mechanisms in this region. Our results indicate that the regional effective moisture was at its lowest until 9-8 ka, and approached a maximum during 8-4/3 ka of the middle Holocene. Afterwards, the climate became relatively dry in general, but with a transient humid interval around 2-1 ka. Our geochemical evidence indicates that the dry early Holocene probably can be attributed to a strong winter monsoon forced by remnant ice sheet, combined with the high evaporation caused by solar insolation. Also, shifts of humid-dry are closely linked to the Asian summer monsoonal strength and therefore the balance of evaporation-precipitation in the middle and late Holocene. Thus, the pattern of the Holocene effective moisture variation is characterized as the monsoon model' in a closed intermontane arid and semi-arid basin near the western Asian monsoonal limit.
英文关键词	effective moisture geochemical analysis aeolian deposits Holocene Gonghe Basin
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:6748289
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336300
作者单位	Liu Bing, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Science;;Key Laboratory of Western China's Environmental Systems,Ministry of Education, Key Laboratory of Desert and Desertification,Chinese Academy of Sciences;;Key Laboratory of Western China's Environmental Systems,Ministry of Education, Lanzhou;;Lanzhou, ;; 730000;;730000.; Zhao Hui, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Science, Key Laboratory of Desert and Desertification,Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Jin Heling, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Science, Key Laboratory of Desert and Desertification,Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Chen Fahu, Key Laboratory of Western China's Environmental Systems,Ministry of Education;;Institute of Tibetan Plateau Research,Chinese Academy of Sciences, Key Laboratory of Western China's Environmental Systems,Ministry of Education;;Key Laboratory of Alpine Ecol...
推荐引用方式 GB/T 7714	Liu Bing,Zhao Hui,Jin Heling,et al. Holocene Moisture Variation Recorded by Aeolian Sand- Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai-Tibetan Plateau, China[J],2020,94(3):668-681.
APA	Liu Bing,Zhao Hui,Jin Heling,&Chen Fahu.(2020).Holocene Moisture Variation Recorded by Aeolian Sand- Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai-Tibetan Plateau, China.Acta Geologica Sinica,94(3),668-681.
MLA	Liu Bing,et al."Holocene Moisture Variation Recorded by Aeolian Sand- Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai-Tibetan Plateau, China".Acta Geologica Sinica 94.3(2020):668-681.