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Based on principal component analysis theory, this paper has evaluated the water quality in Ge Lake by using the characteristics of principal component analysis-the integrated treatment of dimensionality reduction. The results show that the water quality in Ge Lake has been at or inferior to the IV class, Ge Lake water body has in general reached the later period of moderate eutrophication. The main...
Principal component analysis (PCA) were applied to assess surface water quality of the Songhuajiang River basin, China. Thirteen physical-chemical parameters in 25 stations were collected monthly during the period of 2008. Three factors were extracted by PCA, which explained 83.79% of the total variance. The first factor (PCA1) was positive correlated with permanganate index, BOD5, NH3-N, CODCr, TN,...
Water quality of Gan river from 2000 to 2006 is evaluated by principal component analysis, the results show that in the past 7 years, on the whole, the water quality of Gan river is getting better, but the water quality of Gan river in middle and lower reaches is still poorer. Water quality improvement lies in the mass decrease of industrial wastewater, but life sewage and agricultural pollution are...
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