长江三角洲晚第四纪沉积高分辨率硅酸体及古环境研究.

At the end of 2001, we began to do the work of this project. First, we went out to do some field work about the area, and we collected samples from one culture relics and two cores (one is Shanghai Xietu Road Core 2 and the other is Chongming Core CY). Then, we analysis and identify the phytolith, pollen and diatom. According to the.pollen research of Guangfulin relics, we divided four sporopollen zones, discussed the development of living environment, culture and agriculture of the ancestors in Guangfulin. (two papers have been published in JOURNAL OF TONGJI UNIVERSITY). The phytolith research of Guangfulin relics: according to the rice phytolith, rice shell shaped phytolith, diatom fossil and the archaeology evidence, the.history of rice growing can be put to more earlier time, which is of great significance in archaelogy (two papers have been published in CHINESE SCIENCE BULLETIN). By taking high-sensity samples from Chongming Core CY, we got high-resolution sporopollen information. From the middle Atlantic Stage, we divided nine sporopollen.zones, reconstructed seven evolution stages of vegetation and climate, which provides new information for sporopollen research in Chongming area. Those information have been used by Shanghai Museum, Shanghai Seismological Bureau and so on. They all give a high praise to it.

对长江三角洲晚第四纪沉积进行高密度取样，作硅酸体研究，取得高分辨率数据，用数理统计方法处理，利用硅酸体中所含微量碳做碳元素测年，求得绝对年龄，建立晚第四纪以来三角洲相硅酸体组合序列，结合孢粉、藻类资料恢复古植被、古气候，探讨海陆变迁、海岸线变化及古环境演变的陆海相互作用地质历程，为硅酸体在三角洲沉积的应用开辟新领域。