摘要
密切值法在水环境评价中有一定的应用。改进密切值法引入目标差值率对初始矩阵进行规范化处理,并应用层次分析法,对各评价指标的贡献程度加以确定。将改进的密切值法应用到乌梁素海的富营养化评价中,从中总结了此方法在富营养化评价中存在的优点及不足。该方法物理概念明确,计算简单,可处理的数据量大,计算结果直观、可靠。但是,在使用层次分析法确定各评价指标的权重时,由于各指标之间的定量关系不清楚,所以在构造判断矩阵时存在一定的主观性。根据各观测点密切值的变化情况,发现乌梁素海对污水具有一定的净化作用。
Osculating Method is used to evaluate water quality in certain application. Modified osculating value method introduces the initial matrix standardization and applys hierachy process method to determine the contribution of each evaluation index. Modified Osculating Value Method is applied into the eutrophication evaluation of Wuliangsuhai Lake and summed up the advantages and disadvantages in this method. The result shows that this method has clear physical conception, simple calculation, very large amount of treatment datas and intuitionistic and credible results. But, owing to the quantificational relations between various targets are not clear when using the analytic hierarchy process method to determine the weights of the targets, therefore structuring judgement matrix has a certain subjectivity. According to the change situation of various observation points＇ osculating values, Wuliangsuhai Lake has a certain purification to the sewage.
出处
《水资源与水工程学报》
2008年第4期20-23,共4页
Journal of Water Resources and Water Engineering
基金
国家自然科学基金资助项目(50269000150569000250669004)
关键词
改进密切值法
湖泊富营养化
乌梁素海
modified osculation value method
lake eutrophication
Wuliangsuhai Lake
