中文摘要：

对取自冲绳海槽北部的DOC024岩心进行了浮游有孔虫氧同位素和统计分析，依据浮游有孔虫群落组合和Neogloboquadrina dutertrei δ^18O的记录以及表层海水温度、温跃层深度的变化揭示了近7300 aBP以来日本九州西南海区上升流的演化过程。7300～7000 aBP期间，较轻的δ^18O值、较高的年平均表层海水温度以及典型上升流种Globigerina bulloides的低含量和较大的温跃层深度指示这一时期该海区上升流尚不发育，其环境主要受黑潮暖流的控制；7000～4800 aBP期间，区域环境略有变化，上升流开始出现，但发育程度不高；在4800～4200 aBP期间，各环境参数的变化都说明该时期为上升流的迅速发育期，并逐渐取代黑潮成为该区环境的主要控制因素。1900～1200 aBP期间上升流发育程度有所减弱，1200～400 aBP之间上升流的发育又逐渐增强，到约400aBP以后，N．dutertrei δ^18O的明显加重、年平均表层海水温度的显著下降、Globigerina bulloides含量的快速增加和温跃层的明显变浅指示近400 aBP以来是区域上升流发育程度最强的时期。

英文摘要：

Cores DOC024, retrieved from the northern Okinawa Trough in the East China Sea, are used to reconstruct the upwelling evolution over the last 7 300 years based on a multi-proxy approach including the combination of planktonic foraminifer fauna, Neogloboquadrina dutertrei δ^18 O, sea surface temperature （SST） and depth of thermocline. At about 7 300～47 000 aBP, light δ^18O, high SST, low Globigerina bulloides % and deep thermocline show that the region was controlled by the warm Kuroshio current and there was no upwelling; 7 000～44 800 aBP, the environment kept stable, but the upwelling began to develop; during 4 800～44 200 aBP, all proxies changed quickly,which indicates that the upwelling developed rapidly and gradually and controlled the environment; from 1 900 to 1 200 aBP, the upwelling declined slightly; around 1 2004400 aBP,the upwelling gradually increased; since 400 aBP, δ^18O of N. dutertrei increased quickly, SST declined rapidly, Globigerina bulloides% increased fast and depth of thermocline declined obviously, all varieties of proxies point out that the upwelling developed strongly.