摘要
综合水质标识指数法能够表达丰富的水质信息,但其评价过程忽略了现实水环境中不同评价指标的重要性差异,且评价结果不够直观明了。针对这一问题,对综合水质标识指数法进行改进,用污染贡献率法设定初定权数,结合加权主成分分析,对不同评价指标进行赋权,并将评价结果转换成百分制。与单因子评价法、传统综合水质标识指数法相比,改进后的综合水质标识指数法评价结果更加客观合理,简单直观,便于量化水质。
The comprehensive water quality identification index method can express abundant water quality information, but it ignores the importance difference of different evaluation index and the evaluation result is not obvious enough. To solve this problem, the comprehensive water quality identification index method is improved, in which, the initial weight is determined by using over-standard method and weighted Principal Component Analysis is used to give weights to each evaluation index.Besides, the evaluation result is expressed based on hundred mark system. Comparing to single factor evaluation method and traditional comprehensive water quality identification index method, the improved method is more objective and reasonable, and easy to quantify water quality.
作者
周密
马振
ZHOU Mi;MA Zhen;College of Hydrology and Water Resources Hohai University;
出处
《水力发电》
北大核心
2017年第3期1-4,共4页
Water Power
关键词
水质评价
标识指数
单因子评价
主成分分析
百分制
water quality evaluation
identification index
single factor evaluation
Principal Component Analysis
hundred mark system
