Department of Environmental Resources Management, Tajen University, Pingtung, Taiwan, China.
Water Sci Technol. 2010;61(10):2477-89. doi: 10.2166/wst.2010.840.
Canonical discriminant analysis (CDA) was applied in order to distinguish the water-quality and the sediment-quality parameters from neighboring rivers, and to recognize similarities of water and sediment properties between a lagoon and neighboring rivers. Two set of constructed discriminant functions showed a marked contribution to most of the discriminant variables. In water, the significant parameters - the total nitrogen, algae, dissolved oxygen and total phosphate - were combined as the nutrient effect factor. The recognition capacities of the two discriminant functions were 95.6 and 4.4%, respectively; the Kaoping River showed the most similarities with the water quality in Dapeng Bay; in sediment, the significant parameters porosity, Cd, Cr, Al, and Pb were combined as the heavy metal effect factor. The recognition capacities were 82.6 and 17.4%, respectively, but the sediment properties in these three rivers had no significant similarity with the Dapeng Bay.
为了区分邻接河川的水质与底质参数，并识别潟湖与邻接河川之间的水及底质特性相似性，本研究采用典范判别分析（CDA）。两组判别函数对于大多数判别变数有显著的贡献。在水中，重要的参数包括总氮、藻类、溶解氧和总磷酸盐，它们被综合为营养效应因子。这两个判别函数的识别能力分别为 95.6%和 4.4%；高屏溪与大鹏湾的水质最为相似；在底质中，重要的参数孔隙度、Cd、Cr、Al 和 Pb 被综合为重金属效应因子。这两个判别函数的识别能力分别为 82.6%和 17.4%，但这三条河川的底质特性与大鹏湾并无显著相似性。
