Environmental significance of biogenic elements in surface sediments of the Changjiang Estuary and its adjacent areas
文献类型：期刊论文
| 作者 | Yu, Yu1,2; Song, Jinming1 ; Li, Xuegang1; Yuan, Huamao1; Li, Ning1; Duan, Liqin1; Song, JM
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| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2013-11-01 |
| 卷号 | 25期号:11页码:2185-2195 |
| 关键词 | biogenic elements phosphorus fractions sediment source grain size effect Changjiang Estuary and adjacent waters |
| ISSN号 | 1001-0742 |
| 通讯作者 | Song, JM |
| 中文摘要 | Biogenic elements and six phosphorus (P) fractions in surface sediments from the Changjiang Estuary and adjacent waters were determined to investigate the governing factors of these elements, and further to discuss their potential uses as paleo-environment proxies and risks of P release from sediment. Total organic carbon (TOC) and leachable organic P (Lea-OP) showed high concentrations in the estuary, Zhejiang coast and offshore upwelling area. They came from both the Changjiang River and marine biological input. Biogenic silicon (BSi) exhibited a high concentration band between 123 and 124 degrees E. BSi mainly came from diatom production and its concentration in the inshore area was diluted by river sediment. Total nitrogen (TN) was primarily of marine biogenic origin. Seaward decreasing trends of Fe-bound P and Al-bound P revealed their terrestrial origins. Influenced by old Huanghe sediment delivered by the Jiangsu coastal current, the maximum concentration of detrital P (Det-P) was observed in the area north of the estuary. Similar high concentrations of carbonate fluorapatite (CFA-P) and CaCO(3)in the southern study area suggested marine calcium-organism sources of CFA-P. TOC, TN and non-apatite P were enriched in fine sediment, and Det-P partially exhibited coarse-grain enrichment, but BSi had no correlation with sediment grain size. Different sources and governing factors made biogenic elements and P species have distinct potential uses in indicating environmental conditions. Transferable P accounted for 14%-46% of total P. In an aerobic environment, there was low risk of P release from sediment, attributed to excess Fe oxides in sediments. |
| 英文摘要 | Biogenic elements and six phosphorus (P) fractions in surface sediments from the Changjiang Estuary and adjacent waters were determined to investigate the governing factors of these elements, and further to discuss their potential uses as paleo-environment proxies and risks of P release from sediment. Total organic carbon (TOC) and leachable organic P (Lea-OP) showed high concentrations in the estuary, Zhejiang coast and offshore upwelling area. They came from both the Changjiang River and marine biological input. Biogenic silicon (BSi) exhibited a high concentration band between 123 and 124 degrees E. BSi mainly came from diatom production and its concentration in the inshore area was diluted by river sediment. Total nitrogen (TN) was primarily of marine biogenic origin. Seaward decreasing trends of Fe-bound P and Al-bound P revealed their terrestrial origins. Influenced by old Huanghe sediment delivered by the Jiangsu coastal current, the maximum concentration of detrital P (Det-P) was observed in the area north of the estuary. Similar high concentrations of carbonate fluorapatite (CFA-P) and CaCO(3)in the southern study area suggested marine calcium-organism sources of CFA-P. TOC, TN and non-apatite P were enriched in fine sediment, and Det-P partially exhibited coarse-grain enrichment, but BSi had no correlation with sediment grain size. Different sources and governing factors made biogenic elements and P species have distinct potential uses in indicating environmental conditions. Transferable P accounted for 14%-46% of total P. In an aerobic environment, there was low risk of P release from sediment, attributed to excess Fe oxides in sediments. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Environmental Sciences & Ecology |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | EAST CHINA SEA ; YANGTZE-RIVER ; ORGANIC-CARBON ; MARINE-SEDIMENTS ; PHOSPHORUS TRANSPORT ; DIATOM ASSEMBLAGES ; CONTINENTAL-SHELF ; OXYGEN DEPLETION ; NATURAL WATERS ; LAKE-ONTARIO |
| 收录类别 | SCI |
| 原文出处 | 10.1016/S1001-0742(l2)60302-7 |
| 语种 | 英语 |
| WOS记录号 | WOS:000326994200003 |
| 公开日期 | 2014-07-17 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/16472]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 通讯作者 | Song, JM |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Qingdao Agr Univ, Marine Sci & Engn Coll, Qingdao 266109, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Yu,Song, Jinming,Li, Xuegang,et al. Environmental significance of biogenic elements in surface sediments of the Changjiang Estuary and its adjacent areas[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2013,25(11):2185-2195. |
| APA | Yu, Yu.,Song, Jinming.,Li, Xuegang.,Yuan, Huamao.,Li, Ning.,...&Song, JM.(2013).Environmental significance of biogenic elements in surface sediments of the Changjiang Estuary and its adjacent areas.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,25(11),2185-2195. |
| MLA | Yu, Yu,et al."Environmental significance of biogenic elements in surface sediments of the Changjiang Estuary and its adjacent areas".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 25.11(2013):2185-2195. |
入库方式： OAI收割
来源：海洋研究所
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