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首页> 外文会议>International Conference on Mechanical Properties of Materials and Information Technology >Study on Nitrogen, Phosphor and Chemical Oxygen Demand of Different Categories of Aquaculture Lakes by Means of Principal Component Analysis, Factor Analysis and Cluster Analysis
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Study on Nitrogen, Phosphor and Chemical Oxygen Demand of Different Categories of Aquaculture Lakes by Means of Principal Component Analysis, Factor Analysis and Cluster Analysis

机译：基于主要成分分析，因子分析和聚类分析研究不同类别水产养殖湖泊的氮，磷和化学需氧量研究

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The author measured TN, (NH_4)~+-N, (NO_2)~--N, (NO_3)~--N, TP, (PO_4)~(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, (NO_2)~--N, (NO_3)~--N, TP, (PO_4)~(3-)-P and COD_(Mn)) and ammonium absorption factor ((NH_4)~+-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. (NO_3)~--N, TP, TN and (NO_2)~--N make up of one category, and another three categories were (PO_4)~(3-)-P, (NH_4)~+-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.
机译：作者测量TN，（NH_4）〜+ -N，（NO_2）〜 - N，（NO_3）〜 - N，TP，（PO_4）〜（3 - ） - P和COD_（MN）的五个水产养殖湖泊，即2007年在武汉湖湖，山花湖，南湖湖和义王湖，并通过主成分分析（PCA），因子分析（FA）和集群分析（CA）分析了结果。 PCA结果表明，两个主要成分是营养因子（包括TN，（NO_2）〜 - n，（no_3）〜 - n，tp，（po_4）〜（3 - ） - p和cod_（mn））和铵吸收因子（（NH_4）〜+ -N），其功能表达集成。 FA和PCA的结果符合，其因子得分函数表达式集成。 R模式群集结果表明，七个水化指标可以分为四类，即（NO_3）〜--N，TP，TN和（NO_2）〜 - 组成一个类别，另外三个类别是（ Po_4）〜（3 - ） - p，（nh_4）〜+ -n和cod_（mn）。 Q模式集群结果表明，五湖可分为两类，Futou Lake和Liangzi Lake是一个类别，而Chaipo Lake，Yeiipo Lake和南湖湖是另一个，这是由城市废水，生活污水引起的和水产养殖生产。

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