【摘要】 通过1999年在大亚湾海水增养殖区现场的调查资料,分析了上覆水、表层沉积物、柱状样品中的TN、TP含量。结果表明:(1)沉积物中营养物质对水体的贡献或交换,主要来自于表层沉积物。(2)TN的溶出率比TP高,沉积界面N的平衡体系易受破坏,沉积物中N对水体作出的贡献比P大。(3)沉积物对水体中的P有吸附现象,经一系列的地球化学过程后,沉积物中的P释放较难。(4)增养殖区上覆水TP的含量较高,超标现象较多。基于以上研究结果,建议以沉积物中TN的含量作为赤潮监测的因子。更多还原

【Abstract】 Based on the field investigation in the cultural water of Daya Bay, 1999, the contents of total nitrogen and phosphorus in water, surface sediment and core samples were analyzed. At last the article concluded that ⑴the impact of nutrient in the sediment on water was due to surface sediment; ⑵the solubility rate of total nitrogen was higher than of total phosphorus in the sediment,and the balance system of nitrogen near the sediment interface was easy destroyed; ⑶phosphorus inwater was absorbed by the sediment and it was hardly released from the sediment; ⑷the content of total phosphorus in overlying waters was high.Based on those conclusions,it is article suggested that the content of total nitrogen in the sediment was taken for monitoring factor of red tide.更多还原