广西北海半岛近岸水域活性磷酸盐与叶绿素a含量的关系

本文根据1992～1999年6个航次的调查资料，分析研究了广西北海半岛近岸水域活性磷酸盐(PO4—P)含量的分布特征及其与叶绿素a(Chl—a)含量的关系．结果表明：该水域PO4—P含量的分布具有随着其补充量与浮游植物的消耗量的不同而明显不同的特征．相关分析结果显示，秋、冬季该水体PO4—P与Chl-a含量之间以负相关趋势较为明显，春季则以正相关趋势较为明显．该水域中氮的供应运比磷的充裕，除个别航次外，N／P均值都高于39．11，远高于Redfield比值(16)。PO4—P含量可能是该水域浮游植物生长的主要限制图于，也可能是1995年3月该水域发生赤潮的重要影响因素。

Relationship between active phosphate and chlorophyl-a in near-shore water of Beihai Peninsula,Guangxi

Based on the investigation materials in seven voyages from 1992 to 1999, the distribution characteristics of active phosphate and its relation with Chl a in the near shore waters of Beihai Peninsula were studied. The results showed that the change characteristics of active phosphate contents differed obviously with various supplementing and consuming speeds. The correlation analysis indicated that in winter there are negative correlation tendencies between the active phosphate and Chl a, and in spring positive correlation tendencies between them. The supplement resource of nitrogen is far richer than that of phosphorus. Most of the N/P ratios are higher than 39.11 except that in very few voyages, which are far higher than the Redfield ratio 16. Active phosphate is the major factor influencing the phytoplankton, and the important factor inducing the red tide, too.