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为识别天津港富营养化发生的主要环境因子,将聚类分析与因子分析相结合,对天津港海域的水质进行综合评价.结合近期天津港南部海域的生态和水质监测数据,利用SAS统计分析软件,首先以富营养化海域的生态群落指标作为聚类指标,对各监测点进行聚类分析,按照生态群落效应将各监测点分为三类;然后分别对三类监测点水质进行因子分析,识别导致各类水质富氧化的主要环境因子,并确定污染的来源与贡献.
In order to identify the main environmental factors affecting the eutrophication of Tianjin Port, the cluster analysis and factor analysis were combined to evaluate the water quality of Tianjin Port.Combined with the recent ecological and water quality monitoring data in the southern part of Tianjin Port, SAS statistical analysis Software, firstly taking the index of ecological community in eutrophic waters as the clustering index, carrying out cluster analysis on each monitoring point, dividing each monitoring point into three categories according to the ecological community effect; and then performing factor analysis on the water quality of the three types of monitoring points , Identify the major environmental factors that lead to various types of water-rich oxygen and determine the sources and contributions of pollution.