中文摘要：

对渤海莱州湾海域240个站位表层沉积物中底栖有孔虫群落进行了分析,共鉴定常见的底栖有孔虫42种。结果表明,莱州湾表层沉积物中底栖有孔虫主要以玻璃质壳为主（平均丰度达70.9%）,瓷质壳含量次之,胶结壳含量最低;玻璃质壳占有孔虫全群的百分含量,随水深的增加而增加;从黄河口向外海方向,有孔虫分异度和丰度都逐渐增大。该海域底栖有孔虫平面分布的主要控制因素为盐度和底质沉积物类型,大体可分为两个组合分区,I区为Ammonia beccarii-Quinqueloculina spp.组合,代表盐度较低的近岸海陆过渡浅水环境;II区为Cribrononionsub-incertum-Protelphidium tuberculatum组合,代表盐度较高的远岸内陆架环境。

英文摘要：

A total of 240 samples from surface sediments of the Laizhou Bay,Bohai Sea were quantitatively analyzed for benthic foraminifera. There are 42 common benthic foraminifera species found in these samples. The benthic foraminiferal fauna is dominated by hyaline group with an average abundance of 70.9%. The porcellaneous group is the second and arenaceous group is the least. Both abundance and diversity of benthic foraminifera show an increasing trend from the Yellow River mouth to the open sea. Water salinity and sediment type are found to be the major factors controlling the distribution of benthic foraminifera. According to the distribution of dominant benthic foraminifera,two assemblages have been recognized：the Ammonia beccarii -Quinqueloculina spp. assemblage is distributed in the coastal transitional area with lower salinity,and the Cribrononion subincertum-Protelphidium tuberculatum assemblage is located in the offshore shallow sea with higher salinity.