台湾海峡南部海域浮游植物的研究

中国科学院南海海洋研究所调查船“实验”号,於1979年6—7月,在台湾海峡南部海域设有七个测站,进行浮游植物采集(图1)。本航次所采用的网具为国际20号筛绢制成的浮游生物采集网,口径37公分,长度270公分。水深小於90米的测站,从底层到表层(底—0米)作垂直拖网;水深大於90米的测站,用带有闭锁器作垂直分层(一般分为75—0米,150—75米和250—150米三层)拖网采集,共获得样品17号。     

A NUMERICAL MODEL OF PHYTOPLANKTON BIOMASS IN THE CENTRAL WATERS OF SOUTH CHINA SEA

The present study is based on the materials collected from the middle waters of the South China Sea between 12°-15°N and 111°-118°E during May to July in 1978.The biomass of the phytoplankton (Y, dependent variable) is established to give the biomass of each Species and the environmental factors (i. e. water temperature, salinity, oxygen, silicate and phosphate contents), X1,X2...,X139tt are independent variables that are used to stepwisc regression analysis. Accordicg to the mathematical tests and the practical experience by which a lot of species are deleted and added to the equation, the authors consider that the 4th equation as shown below is optimal one for the model of the biomass on the phytoplankton from this waters.The optimal equation refers to text.     

南海中部海域浮游植物生物量的数学模型

近年来对南海中部海域以及西沙、中沙群岛周围海域的浮游植物进行了多次调查[1,2]。浮游植物是海洋中的生产者,是直接吸收和转换能量的,是生态系中关键的一员,尤其是浮游植物的生物量的多少,是决定次级和三级甚至层次更高的生物量的,只有摸清了浮游植物的生物量,才能估算其它层次的生物量,所以,若要构作海洋生态系的模型,第一步就必需作出浮游植物的亚模型。