摘要
在地下水水质评价中,尼梅罗污染指数法是一种数学过程简捷、运算方便的综合评价法。传统的尼梅罗污染指数法存在最大污染因子突出和各污染因子的权重未考虑等问题。为了避免传统方法不合理之处,采用变异系数法-熵权组合赋权法计算指标权重,此方法有效地考虑了各指标对环境的不同影响,使评价结果更客观实际。通过实例应用与传统方法对比,证明了此方法的合理性。
In groundwater quality assessment,Nemerow index method has advantage of simpler mathematical process.Traditional Nemerow index method has some disadvantages,such as the maximum contaminant factor was highlighted and weight of each index was not considered. In order to solve these unreasonable aspects,the weights of groundwater quality indexes were calculated by a comprehensive weighting method based on variation coefficient and entropy method,in which the difference of impact of each index on environment was considered for making the evaluation results more reasonable. Through a case application,compared with the traditional method,the modified evaluation method is proved to be more practical and reliable.
出处
《环境工程》
CAS
CSCD
北大核心
2017年第3期158-162,共5页
Environmental Engineering
基金
国家科技支撑计划项目(2011BAC12B00)
关键词
尼梅罗污染指数法
熵权法
变异系数法
水质评价
Nemerow index method
entropy method
variation coefficient
groundwater quality assessment
