中文摘要：

利用在东海舟山北部海域获取的我国目前最深的全取心钻孔DZS2孔240.1m深沉积物岩心进行孢粉分析鉴定,通过对松散地层的孢粉研究自下而上划分出了9个孢粉组合带、12个气候期,由孢粉组合带变化反映出的该区第四纪早更新世以来的温干-偏冷干-转暖转湿润-温凉偏干-温凉干旱-转暖转湿润-温凉湿润-转暖湿润-温暖偏干-温和偏干-温暖湿润的气候特点与区域性的气候变化比较符合。借助AMS 14 C、OSL测年和古地磁测试结果,分析了上新世以来舟山北部海域上新世以来的气候与环境演化特征,进一步丰富了该海区的新生界的孢粉学资料,为该海区第四纪地层划分和对比提供了证据。

英文摘要：

9 palynological assemblages and 12 climatic stages are recognized based on the spore-pollen re- cords of the coring hole DZS2 （240.1 meter-long） in the offshore area to the north Zhoushan Islands, East China Sea. It is up to date the deepest whole coring hole in that part of China. Quaternary climatic stages are established in a succession as follows： temperate-dry, a little cold-dry, warm and moist, temperate- cold and a little dry, temperate-cold and dry, warm and moist, temperate-cold and moist, warm and moist, warm and a little dry, temperate and a little dry, warm and moist. The local fluctuations of climate coincide with regional climate changes. Combined with dating data of AMS 14C, OSL and palaeomag netism, the Pliocene evolution of climate and environment in the area off the north Zhoushan Islands are discussed. The palynological data has laid solid basis for Pliocene stratigraphie classification and correlation in the offshore North Zhoushan area.