摘要
分析了慈溪市蔬菜产区150个土壤样本,其重金属铅、镉、铬、铜、汞、砷平均含量分别为22,0.17,65,27,0.083,6.5 mg.kg-1。以绿色食品产地环境质量标准(NY/T 391—2000)为依据,利用单项污染指数法分析区域内蔬菜产区的重金属污染状况,结果表明,93.3%的采样点位符合绿色食品产地土壤环境质量要求,同时结果显示镉是影响我市农业生产环境的重要风险因子。利用综合污染指数法比较慈溪市东部、中部、西部的蔬菜生产环境,发现3个区域均处于安全的、未污染水平且污染指数大小表现为:西部<中部<东部。
The average concentration of Pb, Cd, Cr, Cu, As and Hg in the soils of the vegetable planting region in Cixi City （Zhejiang Province） was 22, 0. 17, 65, 27, 0. 083, 6. 5 mg·kg-1, respectively. The evaluation results of single factor index showed that the heavy metals of the soil in 93.3% region were safe and Cd was the most important risk factor for the development of Green Food. Compared with the three regions by comprehensive index, the east, middle and west regions of Cixi were safe. The accumulative pollution level of the soil in the west was the safest, fol- lowed by the middle and the east.
出处
《浙江农业学报》
CSCD
北大核心
2013年第1期152-155,共4页
Acta Agriculturae Zhejiangensis
基金
慈溪市农业局(200711)
关键词
慈溪市
蔬菜产区
土壤
重金属污染
评价
Cixi city
vegetable planting region
soil
heavy metal pollution
evaluation
