Elemental distribution in the topsoil of the Lake Qinghai catchment, NE Tibetan Plateau, and the implications for weathering in semi-arid areas | |
Wang, Ping1,2; Cao, Junji1,2,3; Han, Yongming1,2; Jin, Zhangdong2; Wu, Feng1,2; Zhang, Fei2 | |
2015-05-01 | |
发表期刊 | JOURNAL OF GEOCHEMICAL EXPLORATION |
ISSN | 0375-6742 |
卷号 | 152页码:1-9 |
文章类型 | Article |
摘要 | An understanding of topsoil geochemistry within a watershed helps to identify the influence of natural processes and anthropogenic activities in the environment. Fifteen elements were measured in 73 topsoil samples (top 30 cm) from the Lake Qinghai catchment, NE Onghai-Tibetan Plateau (QTP) in 2009, to investigate geochemical patterns, identify possible sources and explore the implications of chemical weathering. Compared with their content in the upper continental crust (UCC), a deficit of Cu and Zn and an enrichment of Pb were identified in the study area. Enriched Ca levels were observed in alpine soil and pedocal, solonchak and aeolian sand soils, whereas there was a loss in hydromorphic and semi-hydromorphic soils. High Na in marsh solonchak indicated the possible presence of evaporites. Cluster analysis (CA) and principal component analysis (PCA) indicated the dominance of carbonate and the accumulation of P, possibly from grassland litterfall in topsoil. Some human activities have exerted an influence on virgin topsoil, as revealed by GIS mapping. The implications for chemical weathering, based on a chemical index of alteration (CIA) and an Al2O3-(CaO* + Na2O)-K2O (A-CN-K) diagram were characterised by a major carbonate control of the primary weathering stage under cold-dry climatic conditions with Ca and/or Na removal. (C) 2014 Elsevier B.V. All rights reserved. |
关键词 | Topsoil Types Chemical Index Of Alteration Gis Mapping Human Influence |
WOS标题词 | Science & Technology ; Physical Sciences |
DOI | 10.1016/j.gexplo.2014.12.008 |
关键词[WOS] | Heavy-metal Contamination ; Gis-based Approach ; Urban Soils ; Trace-elements ; Hong-kong ; Multivariate-analysis ; Agricultural Soils ; Water Chemistry ; Chemical Index ; Alteration Cia |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Geochemistry & Geophysics |
WOS类目 | Geochemistry & Geophysics |
WOS记录号 | WOS:000352170500001 |
出版者 | ELSEVIER SCIENCE BV |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9356 |
专题 | 粉尘与环境研究室 |
通讯作者 | Cao, Junji |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China 3.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Ping,Cao, Junji,Han, Yongming,et al. Elemental distribution in the topsoil of the Lake Qinghai catchment, NE Tibetan Plateau, and the implications for weathering in semi-arid areas[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2015,152:1-9. |
APA | Wang, Ping,Cao, Junji,Han, Yongming,Jin, Zhangdong,Wu, Feng,&Zhang, Fei.(2015).Elemental distribution in the topsoil of the Lake Qinghai catchment, NE Tibetan Plateau, and the implications for weathering in semi-arid areas.JOURNAL OF GEOCHEMICAL EXPLORATION,152,1-9. |
MLA | Wang, Ping,et al."Elemental distribution in the topsoil of the Lake Qinghai catchment, NE Tibetan Plateau, and the implications for weathering in semi-arid areas".JOURNAL OF GEOCHEMICAL EXPLORATION 152(2015):1-9. |
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