非线性隶属函数集对分析方法在海域水质评价中的应用

Application of set pair analysis method of nonlinear membership function into sea water quality assessment

海域水环境质量评价是不确定性系统的分析问题,具有高度的非线性关系。本文建立了非线性隶属函数的集对分析综合评价方法与系统的评价步骤,提出了针对海洋水环境质量评价相应指标的非线性联系度函数构建方式。以渤海湾某工程海域的水环境质量评价为例,检验该方法的可行性,结果表明集对评价法具有简洁、易操作和高精度等优点,非线性隶属函数能更合理的量化评价指标的等级归属程度,评价结果具有更高的可信度。

Sea water environmental quality assessment was an analysis problem of uncertainty system,which has high nonlinear relation.Based on set pair analysis theory,synthetic assessment method with nonlinear membership function and systematic procedure were proposed in this paper.A connection degree function was developed for different evaluation index of sea water quality assessment.The calibration results work well in one site of Bohai Bay.This showed the set pair analysis method has advantages of concision,easy-operation and high precision,and nonlinear membership function can improve membership degree of evaluation index,so the assessment results were credible.