| 南沙群岛海域表层沉积物中磷的形态分布特征 |
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| 引用本文： | 王汉奎,黄良民,陈国华.南沙群岛海域表层沉积物中磷的形态分布特征[J].热带海洋学报,2005,24(3):31-37. |
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| 作者姓名： | 王汉奎 黄良民 陈国华 |
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| 作者单位： | 1. 中国科学院南海海洋研究所热带海洋环境动力学重点实验室,广东,广州,510301;中国科学院海南热带海洋生物实验站,海南,三亚,572000
2. 中国科学院南海海洋研究所热带海洋环境动力学重点实验室,广东,广州,510301 |
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| 基金项目： | 国家重点野外台站(试点)科学研究课题，“十五”国家科技专项(2003DEA6N041) |
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| 摘 要： | 根据2002年56月南沙群岛海域调查时采集的表层沉积物样品，分析了磷的含量并把磷分为总磷(PT)、无机磷(PIN)、有机磷(POR)、非磷灰石结合态磷(PNAI)、磷灰石结合态磷(PAI)5种赋存形态。利用EPM-810Q电子探针测试沉积物的化学成分，讨论了沉积物中磷的形态和分布以及沉积物的地球化学特征与环境的意义。结果表明，调查海区表层沉积物中磷灰石结合态磷与无机磷的含量变化主要受控于生物活动，它们具有同源关系，同属可被生物利用而再次进人生物地球化学循环的磷。沉积物中的总磷和有机磷与FeO显著相关。沉积物中磷灰石结合态磷与CaO显著相关，它的来源和输入方式受控于水体中碎屑颗粒沉积作用的影响。
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| 关 键 词： | 沉积物 磷 形态 分布 南沙群岛海域 |
| 文章编号： | 1009-5470(2005)03-0031-07 |
| 修稿时间： | 2004年1月13日 |
FORMS AND DISTRIBUTIONS OF PHOSPHORUS IN SURFACE SEDIMENTS OF NANSHA ISLANDS SEA AREA |
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| WANG Han-kui,HUANG Liang-min,CHEN Guo-hua.FORMS AND DISTRIBUTIONS OF PHOSPHORUS IN SURFACE SEDIMENTS OF NANSHA ISLANDS SEA AREA[J].Journal of Tropical Oceanography,2005,24(3):31-37. |
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| Authors: | WANG Han-kui HUANG Liang-min CHEN Guo-hua |
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| Institution: | WANG Han-kui 1,2,HUANG Liang-min 1,CHEN Guo-hua 1,2 |
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| Abstract: | Samples of surface sediments in the Nansha Islands sea area were collected in May and June, 2002. The chemical components were determined with EPM-810Q electron probe. Five forms, including total phosphorus (P_ T ), inorganic phosphorus (P_ IN ), organic phosphorus (P_ OR ), non-apatite combined phosphorus (P_ NAI ) and apatite combined phosphorus (P_ AI ), were divided. The results showed that the contents of P_ AI and P_ IN , which can mostly return to the biogeochemical phosphorus cycle through biological utilization, were mainly controlled by biological action; the variations of P_ T and P_ OR contents correlated with that of FeO; P_ AI was combined with Ca and correlated with CaO; and precipitation of detrital particles influenced the process of P_ AI entering sediments. The forms and distributions of phosphorus in sediments and the environmental effect of its geochemical characteristics were also discussed. |
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| Keywords: | sediment phosphorus form distribution Nansha Islands sea area |
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