中文摘要：

文中研究台湾海峡中北部大陆架区表层沉积的近代沟鞭藻囊孢组合特征及其与海区环境的关系。沟鞭藻囊孢组合由膝沟藻类和多甲藻类的12属19种和裸沟藻类的一个未定囊孢属种组成，还包含丰富或较丰富的微体有孔虫壳体内膜。该组合代表一种适应温暖内浅海环境的沟鞭藻生物群落。文中还对首次在我国发表的沟鞭藻囊孢种进行了描述。

英文摘要：

A recent dinoflagellate cyst assemblage in surface sediments from the north-central Continental Shelf of the Taiwan Straits consists of 7 genera 12 species of peridinioids and 5 genera 7 species of gonyaulacoids, as well as cysts of extant species Polykrikos Schwartzii of gymnodinioids. Microforaminiferal test linings are also abundant in thisassemblage. The dinocyst assemblage is characterized by. 1） the dominance of chorate cysts belonging to the genera Operculodinium, Spini ferites, Lingulodinium and Ackomospkaera etc. ; 2） the relative abundant and diverse congruentidiaceans; 3） the richer cysts of extant species polykrikos sckwartzii, and 4） the absence of such outer neritic species as Irnpagidinium aculeatum and Nematospkaeropsis labyrithus.The assemblage represents a depositional envi ronment of warm inner neritic waters. But this re gion is relatively abundant in heterotrophic congruentidiaceans, it may be primarily related to the high nutrient concentrations in an upwelling current of the working region.