摘要
依据模糊集理论,运用二级模糊综合评价模型对长江马鞍山段水质进行了初次评价,并在此结果的基础上,引入灰色系统理论中的关联度分析法,对其水质进一步评价,结论与实际情况基本相符,长江马鞍山段水质较好。文章提出了环境质量分级与评价的模糊综合——灰色分析复合模型,它既克服了一级模糊评价时,因素过多、权重难以反映因素间的不同层次,导致权重分配困难的问题,又避免了二级模糊评价时,对于最大隶属度同为一个级别的样点,其间的环境质量优劣难以判断的缺点。
On the basis of fuzzy theory, the second grade fuzzy overall assessment model was applied to assessing the water quality in Maanshan reach of Yangtze River, then based on this theory, the relational analysis of grey theory was introduced for further assessment. The conclusion mostly consisted with the actual situation, the water quality of Maanshan reach of Yangtze River was rather good. Classification and assessment of environmental quality models-fuzzy overall and grey analysis were proposed, which would overcome the difficulties not only in the first grade fuzzy overall assessment, which could not reflect the various levels of different factors and weighing, but also in the second grade fuzzy overall assessment, which could not distinguish whether the environmental qualities are good or bad when their most subordinative degrees are in the same grade.
出处
《上海环境科学》
CAS
CSCD
1996年第6期10-13,共4页
Shanghai Environmental Sciences
关键词
河流
环境质量评价
模糊数学
水质评价
River environmental quality assessment Fuzzy mathematics Yangtze River Maanshan
