Occurrence of red clay horizon in soil profiles of the Yellow River Delta: Implications for accumulation of heavy metals
文献类型：期刊论文
| 作者 | Li, Yuan1,2 ; Zhang, Haibo1,2; Tu, Chen1; Song, Fang1,2; Luo, Yongming1,2
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| 刊名 | JOURNAL OF GEOCHEMICAL EXPLORATION
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| 出版日期 | 2017-05-01 |
| 卷号 | 176期号:SI页码:120-127 |
| 关键词 | Yellow River Delta Soil profile Red clay horizon Heavy metals Geochemical accumulation |
| ISSN号 | 0375-6742 |
| 产权排序 | [Li, Yuan; Zhang, Haibo; Tu, Chen; Song, Fang; Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; [Li, Yuan; Zhang, Haibo; Song, Fang; Luo, Yongming] Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 通讯作者 | Luo, YM (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China. ymluo@yic.ac.cn |
| 英文摘要 | The source-area weathering and pedogenesis processes in the alluvial soil profiles might affect depth distribution of heavy metals. Red clay horizon (RCH) with a thickness of 5-50 cm in a 1 m soil profile has been found ubiquitously in the Yellow River Delta (YRD). The occurrence of this RCH was supposed to be related with the frequent shifting of the Yellow River tail channel in the Yellow River Delta (YRD). The geochemical features of the RCH were distinct from its upper or lower yellow silt horizon (YSH). The average median grain size of the RCH (10.5 pm) was almost three times lower than that of the YSH (29.9 mu m). Meanwhile, the RCH was characterized of higher chemical index of alteration (CIA), magnetic susceptibility (chi(lf)) and frequency-dependent magnetic susceptibility (chi(fd)) values than the YSH, which implied a stronger source-area weathering and pedogenesis intensity of the RCH. Besides the distinctive characteristics of the RCH, it also accumulated significantly (p < 0.05) higher mean contents of Cu, Zn, Pb, Cr, Ni and Co, and maximum content of Cd in the RCH than that in the YSH. The principal component analysis (PCA) suggested that distribution of the heavy metals in the YRD soil profiles was significantly related to the content of aluminosilicates, oxides, clay fraction, chi(lf) and chi(fd), however, such a correlation was not found except for Pb in the YSH. In addition, result of BCR sequential extraction indicated that a higher percentage of Fe-Mn oxides associated fraction was in the RCH than in the YSH for the heavy metals of Pb and Co. Cadmium was observed at higher percentage of exchangeable fraction in the RCH than in the YSH, implying a higher environmental risk of the Cd in the RCH. (C) 2015 Elsevier B.V. All rights reserved. |
| 学科主题 | Geochemistry & Geophysics |
| 研究领域[WOS] | Geochemistry & Geophysics |
| 关键词[WOS] | SEQUENTIAL EXTRACTION PROCEDURE ; CHINESE LOESS PLATEAU ; TRACE-METALS ; PALEOCLIMATIC IMPLICATIONS ; WEATHERING INTENSITY ; WASTE-WATER ; BOHAI SEA ; SEDIMENT ; FRACTIONATION ; SPECIATION |
| 收录类别 | SCI |
| 原文出处 | 10.1016/j.gexplo.2015.11.006 |
| 语种 | 英语 |
| WOS记录号 | WOS:000395955500016 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/22051]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 烟台海岸带研究所_近岸生态与环境实验室 烟台海岸带研究所_污染过程与控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yuan,Zhang, Haibo,Tu, Chen,et al. Occurrence of red clay horizon in soil profiles of the Yellow River Delta: Implications for accumulation of heavy metals[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2017,176(SI):120-127. |
| APA | Li, Yuan,Zhang, Haibo,Tu, Chen,Song, Fang,&Luo, Yongming.(2017).Occurrence of red clay horizon in soil profiles of the Yellow River Delta: Implications for accumulation of heavy metals.JOURNAL OF GEOCHEMICAL EXPLORATION,176(SI),120-127. |
| MLA | Li, Yuan,et al."Occurrence of red clay horizon in soil profiles of the Yellow River Delta: Implications for accumulation of heavy metals".JOURNAL OF GEOCHEMICAL EXPLORATION 176.SI(2017):120-127. |
入库方式： OAI收割
来源：烟台海岸带研究所
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