| 胶州湾李村河河口区沉积物有机碳、酸可挥发硫化物及重金属元素的环境响应 |
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| 引用本文： | 于雯泉,钟少军,蒲晓强,刘飞.胶州湾李村河河口区沉积物有机碳、酸可挥发硫化物及重金属元素的环境响应[J].古地理学报,2009,11(3):338-347. |
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| 作者姓名： | 于雯泉 钟少军 蒲晓强 刘飞 |
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| 作者单位： | 1.中国石油大学（华东）地球资源与信息学院，山东东营257061;2.中国科学院海洋研究所，山东青岛266071;3.广东海洋大学，广东湛江524088;4.中国国家海洋局北海分局， 山东青岛266033 |
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| 基金项目： | 国家自然科学基金，中国科学院知识创新工程重要方向性项目，山东省博士后科学创新基金 |
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| 摘 要： | 通过多种仪器分析，测定了胶州湾李村河河口区4个沉积物柱状样品的有机碳（TOC）、酸可挥发硫化物(AVS)及重金属元素活性部分（活性金属）的含量，并系统讨论了其环境响应特征。研究发现，胶州湾李村河河口区三角洲沉积物中的有机碳、AVS和活性金属元素的分布受与河口的距离及沉积相带分布的影响。近河口细粒物质沉积区域的有机质受陆源控制，有机碳含量较高，AVS和活性金属元素含量高，活性铁的含量是AVS形成的主控因素，同时AVS也是多数活性金属元素在沉积物中的主要赋存形态。而离河口较远区域，有机碳含量受海、陆双向物源控制，AVS含量主要受控于有机质含量，两者含量均相对较低，活性金属元素含量也较低，多数金属元素（Cd、Cr、Cu、Mn、Pb、Zn等）主要以依附于铁的形态存在。根据上述沉积特点，将胶州湾李村河河口区沉积环境划分为3类区域5种类型，分别是一类区域中的水下分流河道和分流间湾，二类区域中的水下分流河道和分流间湾及三类区域中的前缘席状砂。
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| 关 键 词： | 胶州湾 有机碳 酸可挥发硫化物 重金属元素 环境响应 |
Environmental responses of total organic carbon(TOC),acid volatile sulfide(AVS)and heavy metal elements in sediments of Licun Estuary in Jiaozhou Bay |
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| Yu Wenquan,Zhong Shaojun,Pu Xiaoqiang,Liu Fei.Environmental responses of total organic carbon(TOC),acid volatile sulfide(AVS)and heavy metal elements in sediments of Licun Estuary in Jiaozhou Bay[J].Journal of Palaeogeography,2009,11(3):338-347. |
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| Authors: | Yu Wenquan Zhong Shaojun Pu Xiaoqiang Liu Fei |
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| Institution: | 1.College of Earth Resources and Information， China University of Petroleum(East China)， Dongying257061， Shandong;2.Institute of Oceanology， Chinese Academy of Sciences， Qingdao266071， Shandong;3.Guangdong Ocean University， Zhanjiang524088， Guangdong;4.North China Sea Branch of the State Oceanic Administration， Qingdao266033， Shandong |
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| Abstract: | The total organic carbon(TOC)， acid volatile sulfide(AVS)， and heavy metal elements
content for four sediment cores, which were collected from the Licun Estuary of Jiaozhou Bay near Qingdao， Shandong Province were measured by instruments. Their environmental responses were discussed. It was found that the distribution of TOC，AVS and heavy metal elements was controlled by the distance away from the estuary and facies distribution. Near the entrance of the river， TOC content was relatively high and was controlled by terrestrial input. The AVS and heavy metal elements content were relatively high. The quantity of active Fe controlled the formation of AVS， and most reactive metals relied on AVS. A short distance away from the entrance of the river， sediments were coarser and its TOC content was lower than those near the entrance， and it was controlled by both marine and terrestrial sources. The AVS and heavy metal content were relatively low. The quantity of TOC controlled AVS production， and most reactive metals relied on the Fe form. Based on the sedimentary characteristics， the environmental responses of these elements were separated into three areas and five types， ie. the subaqueous distributary channel and distributary bay in type 1 area， the subaqueous distributary channel and distributary bay in type 2 area， and the delta front sandbodies in type 3 area. |
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