摘要
利用改进的灰色关联分析法求得水质级别,再结合综合水质标识指数法确定灰色标识指数,建立了灰色-标识指数综合评价模型,并将该模型用于汾河的水质评价中。与传统灰色关联分析法的对比表明:将改进的灰色关联系数计算方法用于水质评价,能有效扩大关联度分布空间,消除关联评价趋于均匀化的问题,使评价结果更可靠;灰色-标识指数法充分体现了灰色关联分析法和综合标识指数法两种方法的优点,从灰色关联性的角度评价综合水质级别,同时又用标识指数全面反映水质的变化、超标指标个数、水域功能区达标情况;灰色-标识指数法可以科学、合理、全面地反映水质信息。
It took water quality assessment of the Fenhe River as an example,used grey correlation analysis method improved correlation coefficient expression to determine water quality level,coupled with comprehensive water quality identification index method to determine grey identification index,built grey-identification index comprehensive evaluation model. Grey-identification index method was compared with the traditional grey correlation analysis method by the degree of association. The evaluation results show that the improved the calculation method of the grey correlation coefficient of water quality assessment can effectively expand the space correlation degree distribution,eliminate the relevance evaluation towards homogenization problem,and make the evaluation results more reliable; grey-identification index method embodies the advantages of two methods of the grey correlation analysis method and index method,first from the angle of the grey relevance evaluation comprehensive category,at the same time the identification index comprehensively reflect the change of water quality,the number of indicators beyond the standard,and water function area to amount to mark. Grey-identification index method can fully reflect the water quality information as a kind of surface water quality evaluation method and is scientific and reasonable.
出处
《人民黄河》
CAS
北大核心
2017年第2期61-64,共4页
Yellow River
关键词
水质评价
灰色关联分析法
灰色-标识指数法
关联度
water quality assessment
grey correlation analysis method
grey-identification index method
degree of association
