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对江苏张家港黄泗浦遗址地层进行微体古生物、孢粉、Rb/Sr、Ti及磁化率代用指标的综合研究,发现唐代早期地层中有海相硅藻、有孔虫、鱼类骨骼化石、水蕨孢子等存在,结合岩性特征,判断其应属与海相通的河流低能或静水沉积环境。孢粉、Rb/Sr、Ti分析结合相关历史文献资料表明该区唐代气候整体温和湿润,至宋代逐渐变为温凉。孢粉和磁化率代用指标指示遗址区自唐代以来受人类活动的干扰程度不断加强。气候环境变迁和人类活动的共同作用导致了遗址区向海通道——古河道G13的淤塞,以致填平。南宋以后张家港北部迅速成陆,长江岸线不断东移及入海通道被阻隔,使古黄泗浦丧失了沿江航运的天然条件,最终导致古黄泗浦港的衰败。
A comprehensive study of the paleontological, sporopollen, Rb / Sr, Ti and magnetic susceptibility indices of the strata of the Huangsipu site in Zhangjiagang City, Jiangsu Province shows that there are marine diatom, foraminifera, fossil bones in the early Tang Dynasty, Fern spores and other existent, combined with lithological characteristics, to determine its should be connected with the sea of rivers low energy or hydrostatic deposition environment. Sporopollen, Rb / Sr, Ti analysis combined with relevant historical documents show that the overall climate of the Tang Dynasty mild and humid, to the Song Dynasty gradually become warm and cool. The indicators of sporopollen and magnetic susceptibility indicate that the disturbance of human activities in the site area has been strengthened since the Tang Dynasty. The combined effects of climate change and human activities led to the siltation of the G13, a sea channel along the ancient channel, which resulted in the leveling of the site. After the Southern Song Dynasty, the rapid expansion of Zhangjiagang into the north, the continuous eastward movement of the Yangtze River and the passage into the sea were blocked, leaving the ancient Huangsipu the natural conditions of shipping along the river and eventually leading to the decline of the ancient Huangpu Port.