本文运用有序系统聚类、对应聚点、最优分割三种数学地质方法，参照孢粉图式将九龙江河口平原海澄ZK5孔剖面划分为8个孢粉带。结合其他钻孔有关资料，得出研究区9个综合孢极组合带，分别反映晚第四纪不同阶段的不同气候环境。通过对应分析结果表明，本区晚第四纪植被演替的决定因素中，湿度比温度更为重要。 In this paper, three mathematical geologic methods of clustering, congregation and optimal partitioning are used. According to the sporopollen pattern, the section of Haicheng ZK5 in Jiulongjiang estuary plain is divided into 8 sporopollen zones. Based on the data of other boreholes, nine integrated spore assemblages in the study area are obtained, which respectively reflect the different climatic environments in different stages of the Late Quaternary. Correspondingly, the results show that humidity is more important than temperature in determining the succession of vegetation in the late Quaternary.