长江口区全新世古环境变化及其对黑潮变动的响应

将长江口区古环境变化的历史资料与冲绳海槽黑潮演变的沉积记录进行直接对比，确定了全新世百、千年尺度的气候波动和短期事件与长江口区生存环境变化的时间序列，发现人类社会的历史进程与自然的发展（气候波动）具有一定的对应关系，如黑潮增强、气候温暖时期适宜农业发展和社会稳定，而黑潮减弱、气候变冷时期容易发生人类迁徒和社会动荡。这不仅对于揭示全球气候演变机制，特别是短期气候事件至关重要，而且对于了解人类生存环境的变化趋势也具有相当重要的意义。

HOLOCENE PALEOENVIRONMENTAL CHANGES IN THE YANGTZE RIVER MOUTH AND THEIR RESPONSES TO THE VARIATIONS IN THE KUROSHIO CURRENT

The sedimentological records of the evolution of the Kuroshio Current have been compared directly with the historical and archaeological data of the paleoenvironmental changes in the Yangtze River Mouth in this study. Based on the sequence of the Holocene climatic fluctuation and short term events on centennial and millennial scales, and the changes in living environments of the Yangtze River Mouth, we know from the four proxy indices that the Kuroshio Current weakened evidently at 0 6,1 7,3 3,4 6,5 9,8 1,and 9 4 kaBP,with a change period of about 1 5 ka,indicating that the Current has experienced a series of fast changes since 10 kaBP in Holocene,and at the same time,it was found that the course of history was related to the development of nature (climatic fluctuation). For instance, the strengthened Kuroshio Current and warm climate were favorable to the development and stability of the agricultural society, while the weakened Kuroshio Current and cold climate easily led to human migration and instability of the society. This is very important not only for revealing the mechanism of global climate changes, particularly of the short term climatic events, but also for understanding the trend of the changes in living environments of human society.