摘要
由物元分析理论导出了水环境质量评价的新模型,将水质标准、评价指标及其特征值作为物元,通过对评价级别和实测数据归一化后,得到模型的经典域、节域、权系数及关联度,建立了水质评价的物元模型,并以某河流水环境质量为例,选取具有代表性的BOD5、CODcr、NH3-N、石油类、粪大肠菌群五项指标为待评物元,取Ⅰ至Ⅴ类水质标准对应的取值范围构造经典域物元矩阵,按照污染贡献率法确定各特征(评价因子)的权重,应用建立的水质评价物元模型计算出关联度0.14,得出该河流水环境质量属于Ⅱ级。实例研究表明,运用物元模型评价水环境质量,评价结果符合客观实际,具有较好的实用性。
A new model of water environment quality evaluation has been derived from matter - element analysis theory. Wa- ter - quality standards, evaluation indicators and their characteristic values are considered as matter - elements. This study estab- lished the water - quality evaluation matter - element model through normalizing the evaluation level and measured data. BODs , CODer, NH3 - N, petroleum, fecal coliform bacteria of a river were selected, with I to V water standard range as classical field matter - element structure matrix, eventually obtained the degree of association is 0. 14 and the river water quality are 1]. The re- sult proved that the new model is suitable to evaluate water environment quality and applicable in practice.
出处
《环境科学与管理》
CAS
2013年第3期172-175,共4页
Environmental Science and Management
基金
国家自然科学基金(No.51109019)
关键词
物元可拓集
模型
水环境质量
：matter - element analysis method
model
water environment quality
