【作者】 谢贵德； 张金婷； 孙华；

【Author】 XIE Gui-de;SUN Hua;Department of Resource Environment and Urban Planning, Nanjing Agricultural University;

【机构】 南京农业大学资源环境与城乡规划系；

【摘要】 土壤母质地质异常是导致部分区域耕层土壤重金属富集的原因之一,但目前对这种特殊区域的相关研究较少。现有的土壤重金属污染评价方法中应用效果较好的是模糊综合评价法,但传统的模糊综合评价方法在选取权重方法存在缺陷。本文对传统模糊综合评价法进行改进,利用层次分析法和熵权法的组合赋权法替代超标倍数赋值法,并将改进后的方法应用于土壤重金属综合评价中。评价结果显示研究区土壤环境质量状况总体较好,在所采样点中没有出现污染情况,均处于Ⅰ级与Ⅱ级之间,其中有9个样本点的评价结果偏向Ⅱ级,其余采样点均偏向Ⅰ级且各个样点的综合评价结果值波动明显。更多还原

【Abstract】 Geological anomalies in soil parent material is one of the reasons cause heavy metals enriched in the topsoil, but the research on this particular area is less. Existing soil heavy metal pollution evaluation method which better application is fuzzy comprehensive evaluation method, but traditional fuzzy comprehensive evaluation method existing flawed in selecting weights. This paper improved the traditional fuzzy comprehensive evaluation method by using AHP and Entropy Law combination weighting method alternative exceeded multiple assignment method, and the improved method is applied in comprehensive evaluation of soil heavy metal. Evaluation results showed that soil environmental quality of the study area generally good. All of the samples have no pollution, are in between Class Ⅰ and Class Ⅱ, which has nine sample points tend Ⅱ level, remaining sampling points are biased Class Ⅰ and each sample results of the comprehensive evaluation value fluctuates significantly.更多还原