环境监测优化布点的综合因子得分法

在主成分分析的基础上提出了一种新的环境优化布点的方法——综合因子得分法。该方法先将多维环境指标矩阵投影到其主成分空间,然后将其与对应的方差贡献率进行加权求得综合因子得分,综合因子得分值越大表示该监测点综合环境质量越差,根据综合因子得分值的大小就可对监测点样本集进行合理分类。应用实例表明,该方法用于环境监测优化布点,具有计算简便、快速,计算结果稳健,分析合理,易于推广等优点。

Comprehensive Factor Score Method for Optimizing Environmental Monitoring Sites

A new method, comprehensive factor score method, is proposed on the basis of principal component analysis in this paper. This method projectes the sample matrix into the subspaee spanned by the principal components, then calculates the comprehensive factor scores by weighting the factor score matrix using their variance contribution, representatively. The larger the comprehensive factor score value is, the worse the comprehensive environmental quality is. The whole sample matrix can be appropriately classified by the comprehensive factor score values. The actual applications showes that this method can provide robust and satisfactory results rapidly and be easily applied to optimizing the actual environmental monitoring sites.