›› 1987, Vol. 7 ›› Issue (3): 228-233.

• 论文 • 上一篇    下一篇

主成分分析和模糊数学综合评判在水质评价中的联合应用

李小彬   

  1. 广州地理研究所
  • 出版日期:1987-07-30 发布日期:1987-07-30

UNITED APPLICATION OF PRINCIPAL COMPONENT ANALYSIS AND FUZZY MATHEMATICAL SYNTHESIS JUDGEMENT TO WATER QUALITY ASSESSMENT

Li Xiaobin   

  1. Guangzhou Institute of Geography
  • Online:1987-07-30 Published:1987-07-30

摘要: 随着建设事业的迅速发展,污水排放日益增多,水系水质正在发生着许多变化.因此,对水质的研究也显得越来越重要.水质评价是通过对水中污染物含量的分析,并与水质标准进行比较,从而对水质污染程度作出定性分等结论.它为水的适用性提供了可靠的依据.由于水中污染参数甚多,含量不一,致使水质综合评价不容易准确.本文试图用主成分分析和模糊数学综合评判联合方法对水质评价进行一次方法论的尝试.

Abstract: Both of principal component analysis and fuay mathematical synthesis are applied to water quality assessment.It is a try to studying of methodology.Principal component analysis can be used to get a comprehensive index or prlucipal component with maximum characteristic value.which reflects efficiently the difference of samples and contrasts the pollution degrees of samples.On the other hand.the pollution types could be determlnd by means of selecUng major parameters with greater contribution and deleting the less important ones in the comprehensive index.But this method can not successfully select proper standard for water quality graduation.when a parameter of each sample is almost equally high value It will be missed out of the covariance matrix analysis.This is the second disadvantage which hinders the method for water quality graduation.fuzzy mathematical synthesis judgement can be used efficiently and objectively in water quality grades assessment.but does not have the advantages of principal component analysla.United application can improve the deficiency of each method and make better water quality assessment.