太湖水质时空相关性分析

利用2001年太湖12个月25个监测点的实测水质资料，结合太湖监测点的空间地理位置，基于相关系数法，对太湖水质时空相关性及时空分布规律进行了研究，并利用动态聚类分析法将太湖所有监测点进行了聚类分析．结果表明，太湖水质存在很强的时空相关性，月份之间的相关性变化比较明显，可能与太湖水位、水体的流动情况以及入湖排污口污染物排放量有关；动态聚类分析的结果可以直观地了解太湖水质的时空变化规律．

Temporal-spatial correlation analysis of water quality for Taihu Lake

Based on the monthly data of water quality of the Taihu Lake obtained from 25 monitoring points in 2001 and the spatial distribution of the monitoring points, a study was made on the water quality distribution and its temporalspatial correlation for the Taihu Lake by use of the correlation coefficient matrix, accompanied with a dynamic cluster analysis of all the monitoring points. The results show that water quality of the Taihu Lake is of high temporal-spatial correlation, and that the evident variation of the correlation of monthly water quality distribution might be related to the water level, water flow and quantity of pollutants discharged into the lake. The result from dynamic cluster analysis can provide abundant and visualized information for domain partition of aquatic environment and for studying mechanism of eutrophication in the Taihu Lake.