Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2012.10.019 |
Profiles of geochemical and isotopic signatures from the Helan Mountains to the eastern Tengger Desert, northwestern China | |
Ding, Z.1,2,3; Ma, J.2; Zhao, W.2; Jiang, Y.3; Love, A.4 | |
通讯作者 | Ma, J. |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2013 |
卷号 | 90页码:77-87 |
英文摘要 | We used environmental tracers to provide insights into groundwater evolution and flow processes on the eastern margin of China’s Tengger Desert and determine recharge sources and recharge timing along the flow paths. The chemical composition was generally Na+ enriched, with no dominant anions. The chemistry is strongly influenced by evaporation and subsequent dissolution of minerals during recharge in the rainy season. Other processes, including cation exchange and weathering, also contribute to the water composition. The median groundwater delta O-18 value was around -9.1 parts per thousand, and most groundwater in the basin was depleted in heavy isotopes. delta C-13 in deep groundwater ranged from -4.73 to -9.56 parts per thousand, indicating that carbonate mixing is common but that isolated carbonate still exists. Radiocarbon values in groundwater ranged from 5.4 to 63.5 pmc. We estimated a residence time of 17.9 and 19.6 kyr at two desert sites, revealing that some replenishment of desert aquifers occurred in the late Pleistocene and early Holocene, when some of the upper reaches of rivers were characterized as modern water. (C) 2012 Elsevier Ltd. All rights reserved. |
英文关键词 | Environmental tracers Groundwater recharge Radiocarbon Residence time |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000314485600010 |
WOS关键词 | SHIYANG RIVER ; GROUNDWATER RECHARGE ; EVOLUTION ; BASIN |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 兰州大学 ; 北京师范大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/178020 |
作者单位 | 1.Chinese Acad Environm Planning, State Environm Protect Adm, Water Environm Inst, Beijing 100012, Peoples R China; 2.Lanzhou Univ, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China; 3.Beijing Normal Univ, Coll Resources Sci & Technol, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; 4.Flinders Univ S Australia, Sch Environm, Adelaide, SA 5001, Australia |
推荐引用方式 GB/T 7714 | Ding, Z.,Ma, J.,Zhao, W.,et al. Profiles of geochemical and isotopic signatures from the Helan Mountains to the eastern Tengger Desert, northwestern China[J]. 兰州大学, 北京师范大学,2013,90:77-87. |
APA | Ding, Z.,Ma, J.,Zhao, W.,Jiang, Y.,&Love, A..(2013).Profiles of geochemical and isotopic signatures from the Helan Mountains to the eastern Tengger Desert, northwestern China.JOURNAL OF ARID ENVIRONMENTS,90,77-87. |
MLA | Ding, Z.,et al."Profiles of geochemical and isotopic signatures from the Helan Mountains to the eastern Tengger Desert, northwestern China".JOURNAL OF ARID ENVIRONMENTS 90(2013):77-87. |
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