本文测定了2006年7月~8月北部湾海域水样和表层沉积物中各种形态磷的含量，研究了水体和沉积物中各种形态磷的分布变化特征及其与环境因子的相关性，探讨了磷的来源、迁移与转化规律。取得如下主要的研究结果：（1）水体无机磷（DIP），溶解有机磷（DOP）、颗粒磷（PP）和总磷（TP）平均含量分别为0.32μmol/L，0.86μmol/L、0.53μmol/L和1.74μmol/L。DIP、DOP和PP分别占TP的（23％±4％），（31％±16％）和（46％±23％）。DIP和PP可互相转化，且PP可转化为DOP。（2）水体DIP在真光层（水深﹤10m）主要受陆源输入影响，真光层以下（水深﹥10m...Based on the environmental investigation during July ～ August, 2006 in Tonkin Gulf, the speciation of phosphorus in the waters and in the surface sediment were determinated. By analyzing the distribution of different speciation of phosphorus and relationship between environmental factors and different speciation of phosphorus in the waters and in the surface sediment, the source of phosphorus, and...学位：理学硕士院系专业：海洋与环境学院海洋学系_海洋化学学号：2005130216
