2005•Unpublished venueRequires access

Principal Component Analysis of Water High Eutrophication Evaluation in Taihu Lake

Huanmei Yao

Abstract

The principal component analysis is applicd to lake pollution evaluation of the water high entrophication in Taihu Lake.It can obviously simplify data structure for original multidimensional comprehensive variable and minimize the loss of original data information.The total contributing rate of the comprehensive pollution principal component, which is made up of the first principal component and the second principal component,will be 95%. Using MATLAB in VB, computer can accomplish the whole process. High eutrophication states supervised in the ten different places of Tai lake in 1987 and in 1994 are separately qualitative evaluated. At the same time, water qualities of Taihu Lake in different places and at different times are compared. This kind of quantitative evaluation is convenient and can be widely applied.

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Key concepts: Principal component analysis, Eutrophication, Pollution, Environmental science, Component (thermodynamics), Principal (computer security), Water pollution, Hydrology (agriculture)