南昌市土壤环境质量评价

选取As、Cd、Cr、Cu、Hg、Ni、Pb、Zn、F、Se、Cl、P、S 13种元素作为评价因子,采用尼梅罗综合污染指数法,参照国家土壤环境质量标准和土壤背景值,用四种评价标准分别对南昌市规划区进行土壤环境质量评价,划分为安全、警戒、轻度污染、中度污染和重度污染五个等级.由于浅层背景值人为活动作用较大,以浅层背景值为评价标准,评价结果以警戒和轻度污染为主;而深层背景值受人为活动干扰较小,以深层背景值为评价标准,则评价结果表现为轻度和中度污染为主.

Appraisal for the Soil Environmental Quality in Nanchang City

In this paper 13 kinds of elements, i. e. As, Cd, Cr, Cu, Hg, Ni, Pb, Zn, F, Se, CI, P and S, are chose as evaluation factors, Nemerow Synthetical Pollution Index is adopted, four criterions are used to assess the soil environmental quality in referring to national standard on the soil environmental quality and soil background values in the city, whereas is divided into five ranks of safety, alertness, slight pollution, medium pollution and serious pollution. Due to the human activities, the evaluating result of shallow back- ground value is mainly of alertness and slight pollution; however, the human impact on deep background value is less than on the shallow, thus the evaluating effect of deep background value is chiefly of slight pollution and middling pollution.