通过对南海东北部、吕宋岛西北岸外 1792 8柱状样中浮游、底栖有孔虫丰度及其与生产力有关的属种含量变化的研究 ,发现该柱状样在末次冰期 (氧同位素 2～ 4期 )和氧同位素 6期时 ,浮游、底栖有孔虫丰度增高 ,高生产力的有孔虫含量也在这两个时期出现高值 ,说明此时该区具有较高的生产力水平 ,这种现象可能与冰期时陆源营养盐输入量增加、东亚冬季风增强并在此形成上升流有关。 Based on the study of planktonic, benthic macro-foraminiferal abundance and productivity-related species variations in the 1792-8 columnar in the northeastern South China Sea and the northwestern Luzon Island, it was found that the columnar samples changed in the last glacial (oxygen isotope 2 ~ 4 phases) and oxygen isotope 6, the abundance of planktonic and benthic foraminifera increased, and the high productive foraminifera also showed high values ​​in both periods, indicating that this area had a higher productivity level This phenomenon may be related to the increase of input of terrigenous nutrient in glacial period and the increase of East Asian winter monsoon and upwelling in this area.