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对冲绳海槽南部53个表层沉积样品中大于0．154mm的浮游有孔虫进行系统鉴定和定量统计，并采用Q型因子分析，求得浮游有孔虫各属种和组合的分布特征：N．dutertei－p．obliquiloculata组合主要分布在离大陆和台湾岛较近的地方，而G．glutinata－G．ruber组合则主要分布在冲绳海槽的中央及靠琉球岛的一侧，且发现浮游有孔虫丰度、属种组合和碎壳率等的分布和变化主要受控于水深、碳酸盐溶跃层、温跃层以及水团等各类环境因子．
Phytoplankton of greater than 0.154 mm in 53 surface sediment samples in the southern Okinawa Trough was systematically identified and quantitatively analyzed. Q distribution was used to determine the distribution of planktonic foraminifer species and combinations: N . dutertei-p. The obliquiloculata assemblages are mainly located closer to the mainland and Taiwan islands, whereas G. obliquiloculata. glutinata-G. ruber assemblages are mainly distributed in the center of Okinawa Trough and on the side of Ryukyu Island, and the abundance of planktonic foraminifera, the distribution and variation of species assemblages and crushed shell rates are mainly controlled by water depth, carbonate dissolution Thermocline, thermocline and water groups and other environmental factors.