【摘要】 鳌山湾属营养水平较低的海域.1999年6月对鳌山湾进行化学生态调控试验,在试验前和试验后第1,2,4,5,6,45天进行跟踪调查,并对鳌山湾浮游植物数量的变化、优势种的交替和浮游植物种类组成进行了研究.结果表明,化学生态调控试验后,鳌山湾浮游植物数量呈逐渐升高的趋势.化学生态调控前甲藻门的长角角藻在海区形成优势种,优势度为37 7%;试验6d后,其优势度降至17 6%,而日本星杆藻的优势度则由试验前的7 1%升高至39 2%,成为该海域的首位优势种 45d后鳌山湾浮游植物数量与1997年同期相比提高5 15～137 32倍.更多还原

【Abstract】 There is a low nutrient level in the Aoshan Bay. In June 1999,the chemical adjustment and control experiment were engaged in the Aoshan Bay. Following tracing investigations were carried out before the experiment and on the 1st,2nd,4th,5th,6th and 45th day after the experiment. While the variance of amount of phytoplankton, the replacement of superior species and the species composition of phytoplankton were researched. The results show that the amount of phytoplankton in the Aoshan Bay rises gradually after the experiment. Ceratium macroceros Cleve of Pyrophyta was the dominant species before the experiment, its dominant index was 37.7%. 6 days after the experiment, its dominant index dropped to 17.6%. Meanwhile the dominant index of Asterionella japonics Cleve rose from 7.1% to 39.2%, it became the first dominant species. 45 d after the experiment, the amount of phytoplankton in the Aoshan Bay was 5.15 to 137.32 times more than that in 1997.更多还原