【摘要】 <正> 南黄海和东海位于中国东部的陆架上,这个区域受江河迳流、大陆沿岸流、黄海冷水和黑潮水的影响,明显地反映出其水文、化学要素、浮游生物的分布都比较复杂。如果仅从浮游生物组成看,有暖温带的近海种,有半咸水河口种,有沿岸低盐种;也有外海热带种。它们构成了浮游生物各自的群落分布区,在群落之间由于水团的水平和垂直方向不同程度的混合,存在着一个群落交汇区。群落及其交汇区具有相对的稳定性,但随季节而有变化。 本文根据1960年和1971年对南黄海和东海(东经127°以西、北纬27°—34°)进行渔场环境调查时,所获得浮游生物的样品,经分析后提出以下的初步探讨。更多还原

【Abstract】 This paper is based on materials collected from the c,oastal waters of Jiangsu and Zhejiang provinces and west to 127°E between 27° N to 34° N during the period of 1960 and 1971 through 1975. The distrubution of the plankton of these two sea regions is identified into three communities, each with its characteristics, and dominant species and each occupying a definite water body. The biotope of the first community which is distributed in the central area of southern Yellow Sea expands southward in autumn and winter seasons. These species are known as temperate.That of the second communnity is restricted along the Jiangsu and Zhejiang provinces. Here, the water is characterized by lower saline and eurthermy. These species belong to neritic.That of the third community is inhabited chiefly in the off shore area of the south-eastern East China Sea. These species are typical tropical and subtropical. Here water is characterized by warm and highly haline.Among the regions of these communities is found a trasnsitional zone. The habitants in this zone are a mixture of these three communities. The temperate species dominate in winter and spring. While in Smmer and Autumn, the tropical and subtropical species predominate.更多还原