【摘要】 1998年5月10日和11日分别在大亚湾的大鹏澳和澳头养殖水域现场调查，分析了底层海水、上覆水、沉积物间隙水中营养盐的含量和磷的化学形态。结果表明：大亚湾养殖水域NH，HPO和H4SiO4含量从大至小为：间隙水，上覆水，底层海水；NO和NO含量变化不大。估算了沉积物一海水界面营养盐扩散通量，NH，NO，NO，HPO，H4SiO4平均通量分别为302．0，－0．06，－1．82，2．53，47．96μmol·（m2·d）－1。水体和沉积物中磷的主要化学形态分别为DOP（占TP的54％）和无机态（占总态的60％）。大亚湾养殖水域浮游生物生长由磷控制。沉积物间隙水中NO，NO，HPO，H4SiO4的浓度垂直分布变化不大，而NH的浓度垂直分布呈指数下降特征。更多还原

【Abstract】 Contents of nutrients and chemical forms of phosphorus in bottom seawater, overlying water and sediment interstitial water are analyzed based on the in situ investigation at the Dapeng ao and the Aotou of the Daya Bay on May 10-11, 1998. The results show that the contents of NH,HPO, H4SiO4 are from high to low in the order of interstitial water, overlying water and bottom water. The contents of NO and NO have little changes. The diffusive fluxes of nutrients across sediment-seawaer interface are calculated. The average fluxes of NH, NO3, NO, HPO, H4SiO4 are separately 302.0, - 0.06, - 1. 82, 2.53 and 47.96 μmolo· (m2·d) -1. The main chemical forms of phosphorus in the seawater and sediment are respectively DoP (accounting for 54% of TP) and inorganic phosphorus (accounting for 60% of total phosphorus). The plankton growth in the cultural area of the Daya Bay is controlled by phosphorus content. The vertical distributions of contents of NO,NO2, HPO, H4SiO4 in the interstitial water of sediment have little chanpes, and that of NH shows characterisitics of minus exponential function, with transferring kinetic model as follows: C = α exp(β x) + C (α,β is constants)更多还原