| 黄东海表层沉积物中磷的分布特征 |
| 摘要点击 1920 全文点击 1239 投稿时间：2013-03-23 修订日期：2013-07-09 |
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| 中文关键词 总磷 无机磷 有机磷 埋藏通量 沉积物 黄东海 |
| 英文关键词 total phosphorus inorganic phosphorus organic phosphorus burial flux sediments the Yellow Sea and the East China Sea |
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| 中文摘要 |
| 于2011年3~6月分两个航次在黄东海采集了表层沉积物样品，测定了其中总磷（TP）、无机磷（IP）和有机磷（OP）的含量. 结果表明，TP的变化范围为10.50~24.10 μmol·g-1，IP的变化范围为7.14~17.10 μmol·g-1，IP是TP的主要赋存形态，平均占TP的70%以上；黄东海大部分站位IP与TP的百分比在50%~90%之间，有4个站位的百分比高于90%，都分布在东海. 沉积物中磷的含量和平面分布特征受到人类活动、物质来源、沉积物的粒度、沉积环境和水文条件等多种因素的影响. 黄东海沉积物中总磷的埋藏通量呈现出区域性的差异，埋藏通量主要受沉积速率、沉积物的孔隙度和底层水含氧量等多种因素的影响，其中沉积物中总磷的含量和沉积速率是决定埋藏通量大小的关键因素. |
| 英文摘要 |
| Different phosphorus compositions (TP, IP and OP) were determined in surface sediments of the Yellow Sea (YS) and the East China Sea (ECS),sampled from two cruises between March and June, 2011.The results showed that, contents of TP were from 10.50 μmol·g-1 to 24.10 μmol·g-1,IP ranged from 7.14 μmol·g-1 to 17.10 μmol·g-1 was the major phosphorus speciation accounting for more than 70% in TP. The percent of IP in TP at most stations was between 50% and 90%, only four stations which lied in the East China Sea with the percent was over 90%. The dominant factors affecting the phosphorus concentration and distribution in surface sediments were anthropogenic activities, sources of input materials, grain size, depositional environments and hydrological conditions. TP burial flux (TPBF) that appeared regional differences was affected by sedimentation rates, porosity and oxygen in bottom water, but TP content and sedimentation rates were crucial factors for TPBF. |
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