芜湖城市郊区土壤重金属污染综合评价

Comprehensive Evaluation of Heavy Metal Pollution in the Soil in the Suburbs of Wuhu City

根据灰色系统基本原理和聚类分析法，提出灰色聚类法，对芜湖城市郊区土壤系统重金属元素污染进行综合评价。 此法先确定灰类白化函数，并引入修正系数对白化函数进行修正，避免分级标准值的误判，同时对污染物实测值进行合理的权重 处理，由灰色聚类结果表明：鸠江区为Ⅱ级，土壤重金属污染环境质量为尚清洁，其它三个点均为起始污染，其中西江区较好，四 山区最差。得出土壤环境综合评价结果与实际污染状况一致，说明运用模糊聚类法是一种适用于土壤污染综合评价的科学方 法。

Based on the basic principles of grey system and cluster analysis mathematical model, the method of fuzzy cluster analysis is proposed, then apply it in the comprehensive evaluation of heavy metal pollution in the soil. Affiliated function is defined and amend coefficient is introduced in order to avoid misjudging the Criterion data he proper weight is made on the actually measured data f pollution at the same time. From the result of this method and calculation, the level of pollution in soil can be distinguished. It is a feasible method suitable for evaluation of soil pollution.