| 长江口外缺氧区沉积物中氧化还原敏感性元素的"粒控效应" |
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| 引用本文： | 张晓东,翟世奎,许淑梅,张爱滨,卢海建.长江口外缺氧区沉积物中氧化还原敏感性元素的"粒控效应"[J].中国海洋大学学报(自然科学版),2005,35(5):868-874. |
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| 作者姓名： | 张晓东 翟世奎 许淑梅 张爱滨 卢海建 |
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| 作者单位： | 中国海洋大学海洋地球科学学院,山东,青岛,266003 |
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| 基金项目： | 国家重点基础研究发展规划项目计划（2002CB412409）资助;致谢：沉积物粒度测试过程中,冯秀丽教授和林霖老师提供了仪器设备和技术指导,2位审稿人提出了许多宝贵的建议,在此深表感谢. |
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| 摘 要： | 对长江口外缺氧区及其邻近海域表层沉积物和沉积物岩芯样品的粒度和元素（主要包括氧化还原敏感性元素简称RSE,和典型陆源碎屑元素）进行了分析,并对元素的“粒控效应”进行了深入研究.结果表明,在近岸底层水溶解氧浓度正常海区沉积物中,元素（包括典型陆源碎屑元素和RSE）的分布显示出明显的“粒控效应”,在缺氧区沉积物中,RSE与粒度之间的相关性较差,其分布不受“粒控效应”的制约,而主要受氧化还原环境的影响.另外缺氧区缺氧程度的不同会导致不同的RSE的富集.
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| 关 键 词： | 长江口 缺氧区 粒控效应 氧化还原敏感性元素 |
| 文章编号： | 1672-5174(2005)05-868-07 |
| 收稿时间： | 2005-04-18 |
| 修稿时间： | 2005-06-13 |
The "Grain Size Effect" of Redox Sensitive Elements in the Sediments in the Hypoxia Zone of the Changjiang Estuary |
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| ZHANG Xiao-Dong,ZHAI Shi-Kui,XU Shu-Mei,ZHANG Ai-Bin,LU Hai-Jian.The "Grain Size Effect" of Redox Sensitive Elements in the Sediments in the Hypoxia Zone of the Changjiang Estuary[J].Periodical of Ocean University of China,2005,35(5):868-874. |
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| Authors: | ZHANG Xiao-Dong ZHAI Shi-Kui XU Shu-Mei ZHANG Ai-Bin LU Hai-Jian |
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| Institution: | College of Marine Geoscience, Ocean University of China, Qingdao 266003, China |
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| Abstract: | The study measured the grain size and elements, including redox sensitive elements(RSE) and main terrigenous elements in the sediments in the hypoxia zone of the Changjiang Estuary and its contiguous sea area. Based on these data, the paper presents detailed studies on the"grain size effects" of RSE elements. The data shows that the elements including RSE and terrigenous elements are not affected by "grain size effects" in the zone where bottom water dissolved oxygen is normal, and in the hypoxia zone, the RSE have a poor correlation with grian size, and the distribution of RSE does not conform with "grain size effects", on the contrary, it is controlled by the reductive environment. And the extent of hypoxia may result in the enrichment of different RSE. |
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| Keywords: | Changjiang estuary hypoxia zone grain size effect redox sensitive elements |
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