基于改进的灰色关联分析法在地表水环境评价中的应用

Application of Improved Grey Relational Analysis Method in Environmental Quality Assessment of Surface Water

采用改进灰色关联分析法对大连市复州河流域水环境质量进行评价。结果表明,安波七道房聂屯、七道房水库以及松树水库断面水质均满足水功能区要求的水质目标;同益大桥断面水质优于水功能区要求的Ⅲ类水标准;蔡房身大桥断面水质劣于水质目标2个级别;东风水库和复州河大桥断面水质劣于水质目标1个级别。改进的灰色关联分析法克服了传统法的不足,评价结果较为客观真实,能够为水环境保护工作提供科学依据和有效途径。

The Improved Grey Relational Analysis Method is adopted to assess water environmental quality of Fuzhouhe River Basin.The results show that the water quality of Anbo Qidaofang Nietun,Qidaofang reservoir and Songshu reservoir all meets the quality standard required by water function zone.The water quality of Tongyi bridge cross section is better thanⅢclass water standard required by water function zone.The water quality of Caifangshen bridge section is 2 grade low⁃er than the water quality target.The water quality of Dongfeng reservoir and Fuzhouhe bridge cross section is 1 grade lower than the water quality target.The Improved Grey Relational Analysis Method overcomes the deficiency of traditional meth⁃od,and the evaluation results are comparatively objective which can provide scientific basis and effective way for water en⁃vironmental protection.