南京市郊区蔬菜地土壤环境质量评价

EVALUATION OF SOIL ENVIRONMENT QUALITY OF VEGETABLE SOILS IN NANJING SUBURB

在南京市郊区选择了3片蔬菜地分布相对集中的区域,按照国家无公害蔬菜产地环境要求进行了土壤环境质量评价。评价结果显示,调查区域约40%的蔬菜地土壤符合国家无公害蔬菜产地土壤环境要求,约30%的土壤在警戒线附近,30%的土壤遭受了不同程度的污染,不符合国家无公害蔬菜产地土壤环境要求。对土壤污染的贡献率主要为Cd污染,部分地区的Hg污染也较重。

Soil samples were collected from three vegetable production bases in the suburbs of Nanjing for quality evaluation according to the national environmental requirements for hazard-free vegetable production bases (GB/T18407.1-2001). Results of the evaluation show that 40% of the soils are safe, 30% are bordering warning limit and 30% are polluted to a varying extent, mainly with Cd and Hg.