生物化石是确定古沉积环境的重要依据之一。第四纪以来的微古化石群与现代微体生物群较为相近。因此,深入开展现代近岸浅海及沿岸滨海各种环境中微体生物分布规律的研究,对于恢复我国沿海地区,第四纪以来古地理环境及研究海平面变化的历史,具有重要意义。近年来,在这方面国内不少学者作了许多工作,已取得了良好的效果。 Biological fossils are one of the important bases for determining the ancient sedimentary environment. Microfossil fossils since Quaternary and modern micro-organisms are similar. Therefore, it is of great significance to further study the distribution of micro-organisms in modern coastal shallow seas and coastal coastal environments in order to restore the history of the paleogeographic environment in our coastal areas and Quaternary and to study the changes of sea level. In recent years, many scholars in this field have done a lot of work and have achieved good results.