Study on Nitrogen, Phosphor and Chemical Oxygen Demand of Differnt Categories of Aquaculture Lakes by Means of Principal Component Analysis, Factor Analysis and Cluster Analysis

Abstract:

The author measured TN, NH₄⁺-N, NO₂^--N, NO₃^--N, TP, PO₄^3--P and COD_Mn of the five aquaculture lakes that is, Liangzi Lake, Futou Lake, Chaipo Lake, Nanhu Lake and Yezhi Lake, in Wuhan in 2007, and had analyzed the results by means of Principal Component Analysis (PCA), Factor Analysis (FA) and Cluster Analysis (CA). The PCA result showed that the two principal components were nutrient factor (including TN, NO₂^--N, NO₃^--N, TP, PO₄^3--P and COD_Mn) and ammonium absorption factor (NH₄⁺-N), with their function expression integrated. The results of FA and PCA were in conformity, with their factor score function expression integrated. R-mode cluster result indicated that the seven hydrochemical indexes could be divided into four categories, i.e. NO₃ - -N, TP, TN and NO₂^--N make up of one category, and another three categories were PO₄^3--P, NH₄⁺-N and COD_Mn, respectively. Q-mode cluster result showed that the five lakes can be divided into two categories, Futou Lake and Liangzi Lake is one category, and Chaipo Lake, Yezhi Lake and Nanhu Lake is the other, which has been caused by urban waste water, domestic sewage and aquaculture production.

• Periodical: Advanced Materials Research (Volume 340)
• Pages: 369-377
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.340.369
• Online since: September 2011
• Authors: Luo Jun Gong, Xue Fen Yang, Bang Xi Xiong, Gui Ping Li, Xian Li Chen
• Keywords: Categories of Aquaculture Lakes, Chemical Oxygen Demand (COD), Cluster Analysis, Factor Analysis (FA), Nitrogen, Phosphor

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