THE APPLICATION OF THE SYSTEMATIC CLUSTER ANALYSIS METHOD TO EVALUATE THE WATER QUALITY OF BEIJIANG RIVER SYSTEM OF PEARL RIVER VALLEY
应用系统聚类分析的方法评价珠江流域北江水系的水质状况

The diatoms are regarded as good indicators for water environment. By systematic cluster analysis method, the epithytic diatoms combined with the physical and chemical factors of water bodies are used to evaluate the water quality of the eight tributaries of Beijiang River system of pearl River valley. It shows that the situation of the water quality of these rivers is still fine.