摘要
针对引起沂河水质恶化的主因,选取沂河5个实测断面的6项评价指标,以信息熵理论和综合指数法为基础,建立了河流水质综合评价模型,并对沂河水质进行了综合评价。结果表明,沂河不同河段水质综合指数分别为:沂源段0.776,沂水段0.456,临沂段0.494,平邑段0.702,郯城段0.482;平均熵权综合指数0.582,水质中等。评价结果与实际情况基本相符。可见该方法是有效和实用的,评价结果也为沂河的科学治理提供了参考依据。
According to the main factors causing water quality deterioration of Yihe River,comprehensive assessment model of river water quality was built with six evaluation indexes of five measured sections based on information entropy theory and comprehensive index method in this paper.The results of this model applied to assess Yihe River showed comprehensive indexes of different sub-regional water quality,which Yiyuan was 0.776,Yishui 0.456,Linyi 0.494,Pingyi 0.702,and Tancheng 0.482.The average entropy weight CI of Yihe River water quality was 0.582 in moderate state.The results conform basically to reality.Therefore the method is effective and practical.The results can provide reference for the scientific governance of Yihe River.
出处
《水利科技与经济》
2013年第2期37-39,共3页
Water Conservancy Science and Technology and Economy
关键词
水质评价
综合指数
熵值法
沂河
water quality assessment
comprehensive index
entropy value method
Yihe River
