运用数理统计方法研究东海南部陆缘晚第四纪硅藻与环境的关系

RELATIONSHIP BETWEEN DIATOM ASSEMBLAGE AND PALEOENVIRONMENT OF LATE QUATERNARY IN THE SOUTH CONTINENTAL MARGIN OF THE EAST CHINA SEA ON THE BASIS OF MULTIPLE STATISTICAL METHODS

运用因子分析、对应分析、最优分割、聚类分析等多种数理统计方法,对东海南部陆缘(闽南段)6个柱状剖面的晚第四纪沉积硅藻进行了研究,以代表性的九龙江口ZK2井柱状剖面为例加以详细分析,得出了硅藻组合所反映的生态环境,恢复了该地区的古环境演替过程,即闽南九龙江口晚第四纪以来经历了河流、河口、河口内口、河口外口、河口外缘、河口外缘或海湾、河口内口等古环境演替过程。

The sedimentary diatoms of late Quaternary in six columns from the south continental margin of the East China Sea(in the south of Fujian) have been studied with the help of multiple statistical methods, such as factor analysis,corresponding analysis,and optimum cut and cluster analysis.And we selected the column of well ZK2 as a representative example to discuss the diatom assemblage division and paleoenvironmental evolution in detail,and found the evolution succession as follows: river→frith→inside frith→outside frith→outer frith edge→outer frith edge or lough→inside frith.According to the results of the statistical analysis and ecological analysis from the six columns, the evolution of the paleoenvironment would have the course of river, frith, inside frith, outside frith,outer frith edge, fjord,and inside frith.