A multi-proxy study of sedimentary humic substances in the salt marsh of the Changjiang Estuary, China
文献类型：期刊论文
| 作者 | Zhang, Yaoling1,2 ; Du, Jinzhou1; Zhao, Xin3; Wu, Wangsuo4; Peng, Bo3; Zhang, Jing1
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| 刊名 | ESTUARINE COASTAL AND SHELF SCIENCE
 |
| 出版日期 | 2014-12-05 |
| 卷号 | 151页码:295-301 |
| 关键词 | Fulvic Acids Humic Acids Sediments Salt Marshes Changjiang Estuary |
| 文献子类 | Article |
| 英文摘要 | To better understand the origin, composition, and reactivity of sedimentary humic substances (HSs) in salt marshes in the Changjiang Estuary, HS samples were isolated from a sediment core that was collected from the Eastern Chongming salt marsh. Chemical and spectroscopic methods were used to analyze the features of these HSs. The results indicate that the studied HSs in the salt marsh sediments are mainly terrestrial-derived and that the sedimentary organic matter (SUM) in the top layer may contain more organic matter from marine sources and/or autochthonous materials due to the dramatic decreasing of the sediment supply as a result of damming. The degradation of labile carbohydrates and proteins and the preservation of refractory lignin components dominate the early diagenetic reactions of SUM in the salt marsh area. The average contents of the carboxylic groups in FAs and HAs are 11.64 +/- 1.08 and 7.13 +/- 0.16 meq/gC, and those of phenolic groups are 1.95 +/- 0.13 and 2.40 +/- 0.44 meq/gC, respectively. The content of carboxylic groups increased with increasing depth, while there were no obvious changes in the content of phenolic groups. The average concentration of total proton-binding sites is approximately 12.5 mu mol/g sediment for the studied HSs. These values may provide insight into the migration and fate of HS-bound contaminants in sediments and the overlying sea water in the salt marsh areas of the Changjiang Estuary. (C) 2014 Elsevier Ltd. All rights reserved. |
| WOS关键词 | DISSOLVED ORGANIC-MATTER ; STABLE CARBON-ISOTOPE ; ACID PROPERTIES ; HAINAN ISLAND ; SOIL DEPTH ; C-13 ; INDICATORS ; RESONANCE ; NITROGEN ; KEROGEN |
| WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000347768800029 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/5658]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 青海盐湖研究所_盐湖资源综合利用工程技术中心 中国科学院青海盐湖研究所 |
| 作者单位 | 1.E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 3.E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China 4.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yaoling,Du, Jinzhou,Zhao, Xin,et al. A multi-proxy study of sedimentary humic substances in the salt marsh of the Changjiang Estuary, China[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2014,151:295-301. |
| APA | Zhang, Yaoling,Du, Jinzhou,Zhao, Xin,Wu, Wangsuo,Peng, Bo,&Zhang, Jing.(2014).A multi-proxy study of sedimentary humic substances in the salt marsh of the Changjiang Estuary, China.ESTUARINE COASTAL AND SHELF SCIENCE,151,295-301. |
| MLA | Zhang, Yaoling,et al."A multi-proxy study of sedimentary humic substances in the salt marsh of the Changjiang Estuary, China".ESTUARINE COASTAL AND SHELF SCIENCE 151(2014):295-301. |
入库方式： OAI收割
来源：青海盐湖研究所
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