大鹏湾海水理化因子对夜光藻生长影响的因子分析

ENVIRONMENTAL INFLUENCE ON GROWTH OF Noctiluca scientillans IN DAPENG BAY,NORTH OF SOUTH CHINA SEA

本文报告了大鹏湾夜光藻种群自身增长动态的时间序列AR模型;并将环境理化因子看成对夜光藻增长的干扰变量,经逐步回归分析,以揭示环境理化因子与夜光藻生长之间的因果关系。 其模型的拟合精确度均在85％以上。其结论是:大鹏湾夜光藻生长与可溶性亚硝态氮、温度、溶解氧、叶绿素a和盐度有明显的主效应,且各环境理化因子之间对它的生长有交互作用的效应。从而深入地认识诸因子对夜光藻生长的内在联系,以便为夜光藻赤潮的预测和控制提供参考资料。

Random time series models were made to analyse population dynamics of Noctilu-ca scientillans. Combining the application of stepwise regression analysis with computer calculation, the study was mainly to reveal the relationship between the environmental physical and chemical factors and the growth of N. scientillans. Sampling was carried out every two days from March 30 to June 10,1990 in Dapeng Bay,north of the South China Sea . Six stepwise regressive models were established. Results inicated that water temperature, DIN , DO. chlorophyll a and salinity were the major factors that determined the growth of the glga. In addition, there were dual role within eight sampled environmental factors.