干旱区生态环境知识资源中心(Arid): Controlling factors and the paleoenvironmental significance of chemical elements in Holocene calcareous root tubes in the Alashan Desert, Northwest China

Arid

DOI	10.1017/qua.2018.80
	Controlling factors and the paleoenvironmental significance of chemical elements in Holocene calcareous root tubes in the Alashan Desert, Northwest China
	Gao, Youhong 1; Li, Zhuolun 1,2; Wang, Nai’ang 1; Li, Ruolan 1
通讯作者	Li, Zhuolun
来源期刊	QUATERNARY RESEARCH
ISSN	0033-5894
EISSN	1096-0287
出版年	2019
卷号	91 期号:1 页码:149-162
英文摘要	In the hinterland of the desert, valuable archives of paleoenvironmental evolution are scarce. Calcareous root tubes (CRTs) have a strong potential for reconstructing paleoenvironmental conditions. It is still unclear, however, whether chemical elements in the CRTs can provide insights into paleoenvironmental conditions. In this study, the major- and trace-element composition of 32 CRT samples from the Alashan Desert were analyzed by X-ray fluorescence spectrometry. Results showed that the elemental composition and content change were controlled by the parent material and climatic conditions at the time of CRT formation. Ca, Mg, and Sr were significantly affected by climate, whereas the enrichment of P is likely related to the growth of plants. Higher (lower) Mg/Ca and Sr/Ca ratios corresponded to higher (lower) effective moisture and a higher (lower) Mg/Sr ratio indicated a higher (lower) temperature during the middle Holocene (8-5 cal ka BP). The reconstruction results for effective moisture were consistent with those in the Asian monsoon margin of northwestern China, which were caused by higher monsoon precipitation and lower evaporation. Therefore, chemical elements in the CRTs can reflect changes in paleo-effective moisture and paleotemperature at a millennial resolution in this area.
英文关键词	Rhizoliths Secondary carbonate Paleoenvironment Holocene Sand sea Arid region
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000488837500011
WOS关键词	LOESS-PALEOSOL SEQUENCE ; ULAN BUH DESERT ; ENVIRONMENTAL-CHANGES ; NORTHERN CHINA ; PARTITION-COEFFICIENTS ; WEATHERING RESPONSE ; LANDSCAPE EVOLUTION ; MOISTURE EVOLUTION ; AEOLIAN DEPOSITS ; TRACE-ELEMENTS
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218249
作者单位	1.Lanzhou Univ, Ctr Glacier & Desert Res, Coll Earth & Environm Sci, Lanzhou 730000, Gansu, Peoples R China; 2.Shandong Univ Sci & Technol, Shandong Prov Key Lab Deposit Mineralizat & Sedim, Qingdao 266590, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Gao, Youhong,Li, Zhuolun,Wang, Nai’ang,et al. Controlling factors and the paleoenvironmental significance of chemical elements in Holocene calcareous root tubes in the Alashan Desert, Northwest China[J]. 兰州大学,2019,91(1):149-162.
APA	Gao, Youhong,Li, Zhuolun,Wang, Nai’ang,&Li, Ruolan.(2019).Controlling factors and the paleoenvironmental significance of chemical elements in Holocene calcareous root tubes in the Alashan Desert, Northwest China.QUATERNARY RESEARCH,91(1),149-162.
MLA	Gao, Youhong,et al."Controlling factors and the paleoenvironmental significance of chemical elements in Holocene calcareous root tubes in the Alashan Desert, Northwest China".QUATERNARY RESEARCH 91.1(2019):149-162.