| 水库现代沉积过程沉积磷的早期成岩作用模型研究 |
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| 引用本文： | 朱俊,王雨春,万国江,刘丛强.水库现代沉积过程沉积磷的早期成岩作用模型研究[J].矿物学报,2006,26(3):296-302. |
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| 作者姓名： | 朱俊 王雨春 万国江 刘丛强 |
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| 作者单位： | 1. 中国科学院,地球化学研究所,环境地球化学国家重点实验室,贵州,贵阳,550002
2. 中国水利水电科学研究院,水环境研究所,北京,100038;水利部水资源与水生态工程研究中心,北京,100038 |
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| 摘 要： | 在沉积磷形态分析、孔隙水化学、核素计年以及吸附解吸实验等的基础上,运用一维“反应-平流-扩散”模型,研究了红枫湖现代沉积过程中磷的沉积改造。结果表明:红枫湖现代沉积过程中,有机态磷的矿化分解和铁结合态磷的络合/溶解,是控制沉积物磷迁移转化动力学的主要机制。沉积物-水界面附近有机磷的快速降解,可能克服沉积界面上铁氧化物对溶解磷的吸附缓冲,而形成向水体的磷酸盐迁移通量;自生磷灰石的沉积改造相对不明显,沉积磷向稳定形态含磷矿物(钙氟磷灰石)的转化过程同样不能影响红枫湖现代沉积过程中磷转化的质量平衡。
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| 关 键 词： | 沉积磷 早期成岩作用模型 红枫湖水库 |
| 文章编号： | 1000-4734（2006）03-0296-07 |
| 收稿时间： | 2005-12-27 |
| 修稿时间： | 2005年12月27 |
EARLY DIAGENESIS MODEL OF SEDIMENTARY PHOSPHORUS IN A RESERVOIR |
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| ZHU Jun,WANG Yu-chun,WAN Guo-jiang,LIU Cong-qiang.EARLY DIAGENESIS MODEL OF SEDIMENTARY PHOSPHORUS IN A RESERVOIR[J].Acta Mineralogica Sinica,2006,26(3):296-302. |
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| Authors: | ZHU Jun WANG Yu-chun WAN Guo-jiang LIU Cong-qiang |
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| Institution: | 1. State Key Lab. of Environment Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; 2. China Institute of Water Resources and Hydroelectric Power Research, Beijing 100038, China |
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| Abstract: | To shed more quantitative insight into the redistribution of sedimentary P with depth,based on the data from pore water analysis,solid phase P analysis,sedimentary nuclide chronology and sorption experiment,a mathematical model describing the sedimentary P cycle was applied.The result of this study indicated that the mineralization of organic P and the dissolution of Fe-bound P are the major mechanisms by which the sedimentary P dynamics was controlled during the burial processes of sediments in Hongfeng Lake.The model calculation also showed that the amount of dissolved phosphate provided by organic P mineralization in the surface sediment zone was larger than that absorbed by ferriferous oxide,as a result,there is a potential upward flux of phosphate from sediments to overlying waters.Meanwhile,the result of the model calculation suggested that the processes of authigenic P formation and carbonate fluorapatite are of no significance in mass balance of sedimentary P during the early diagenesis of sediments in Hongfeng Lake. |
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| Keywords: | sedimentary phosphorus early diagenetic mathematical model reservoir |
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