干旱区生态环境知识资源中心(Arid): Holocene aeolian stratigraphic sequences in the eastern portion of the desert belt (sand seas and sandy lands) in northern China and their palaeoenvironmental implications

Arid

	Holocene aeolian stratigraphic sequences in the eastern portion of the desert belt (sand seas and sandy lands) in northern China and their palaeoenvironmental implications
	Yang Xiaoping; Liang Peng; Zhang Deguo; Li Hongwei; Rioual Patrick; Wang Xulong; Xu Bing; Ma Zhibang; Liu Qianqian; Ren Xiaozong; Hu Fangen; He Yuxin; Rao Gang; Chen Ninghua
来源期刊	Science China. Earth Sciences
ISSN	1674-7313
出版年	2019
卷号	62 期号:8 页码:1302-1315
英文摘要	This paper presents the environmental history and its responses to palaeoclimatic changes since the start of the Holocene in the eastern portion of the desert belt (sand seas and sandy lands) in northern China by comparing the aeolian sandpalaeosol sequences and their palaeoclimatic proxies. The optically stimulated luminescence (OSL) ages of the aeolian sandpalaeosol sedimentary sequences and a series of palaeoenvironmental proxies show that: (1) The large-scale dune landscape currently in the Kubuqi Sand Sea was formed during the Holocene in general; and the palaeosol was generally developed during the period of 4-2 ka, indicating conditions favorable for vegetation growth, soil development, and organic carbon accumulation due to increased precipitation or effective moisture and weakened aeolian activities; the large-scale expansion of dunes in the recent 2 ka is closely linked to human activities. The variable discharge of the Yellow River with diversions for irrigation may have resulted in a more consistent supply of aeolian particles for dune field expansion. (2) The dune landscape of the Hunshandake Sandy Land was likely formed around 12 ka, and before this, the western part of the Hunshandake Sandy Land would have been covered by a single large lake; it was obviously wetter than today in the sandy land during the period of 9.6-3 ka and the palaeosols were developed at the same time. But the aeolian activities have not been completely dormant in this long-lasting wetter epoch; because the Holocene wetter period was likely time-transgressive across the region. (3) The palaeosol of the Hulunbuir Sandy Land began to develop as early as 14.5 ka, probably continuing until the last 2 ka. The palaeosol development of various dune fields in the eastern portion of the desert belt (sand seas and sandy lands) in northern China is spatially heterogeneous, and even the palaeosol development time in different locations within each sandy land is inconsistent. During the middle Holocene (especially the 7.5-3.5 ka), all the sandy lands were stabilized in general and the intensity of aeolian activities was significantly weakened. The number of palaeoenvironmental records in the eastern portion of the desert belt (sand seas and sandy lands) in northern China has increased rapidly in the past decade, but the amount of published data still does not match the vast extent of the dune fields. It does require much more in-depth palaeoenvironmental studies for a full understanding of the relationship between aeolian activities and climate change in northern China.
英文关键词	Sand sea Sandy land, Environmental evolution, Kubuqi, Hunshandake, Hulunbuir
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:6516826
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336132
作者单位	Yang Xiaoping, Department of Geography, School of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China.; Zhang Deguo, Department of Geography, School of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China.; Li Hongwei, Department of Geography, School of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China.; Liang Peng, Institute of Geology and Geophysics, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, Key Laboratory of Cenozoic Geology and Environment, Chinese Academy of Sciences;;, ;;, Beijing;;Beijing 100029;;100049.; Rioual Patrick, Institute of Geology and Geophysics, Chinese Academy of Sciences, Key Laboratory of Cenozoic Geology and Environment, Chinese Academy of Sciences, Beijing 100029, China.; Xu Bing, Institute of Geology and Geophysics, Chinese Academy of Sciences, Key Laboratory of Cenozoic Geology and Environment, Chinese Academy of Sciences, Beijing 100029, China.; Ma Zhibang, Institute of Geology and Geophysics, C...
推荐引用方式 GB/T 7714	Yang Xiaoping,Liang Peng,Zhang Deguo,et al. Holocene aeolian stratigraphic sequences in the eastern portion of the desert belt (sand seas and sandy lands) in northern China and their palaeoenvironmental implications[J],2019,62(8):1302-1315.
APA	Yang Xiaoping.,Liang Peng.,Zhang Deguo.,Li Hongwei.,Rioual Patrick.,...&Chen Ninghua.(2019).Holocene aeolian stratigraphic sequences in the eastern portion of the desert belt (sand seas and sandy lands) in northern China and their palaeoenvironmental implications.Science China. Earth Sciences,62(8),1302-1315.
MLA	Yang Xiaoping,et al."Holocene aeolian stratigraphic sequences in the eastern portion of the desert belt (sand seas and sandy lands) in northern China and their palaeoenvironmental implications".Science China. Earth Sciences 62.8(2019):1302-1315.