To verify the classification of heavy metals pollution , the fisher 's discriminance were applied to establish a fisher model for assessment on soil pollution of heavy metal in urban area of nanchong city .

针对南充市区土壤重金属污染片区的分类结果，为了判断其有效性，应用多类fisher判别法，建立了南充市区土壤重金属污染评价的fisher模型。