水土保持学报2012，Vol.26Issue(5)：186-189,4.
北碚区菜地表层土壤镉的环境地球化学基线与污染程度研究
The Environmental Geochemical Baseline and Polluting Level of Cadmium in Surface Layer's Soil of Vegetable Fields in Beibei District
摘要
Abstract
Through the field sampling,test in lab and mathematical statistics,the environmental geochemical baseline and polluting level of cadmium in surface layer's soil of the vegetable fields were researched in Beibei district.The results showed that:(1)The average content of cadmium of surface layer's soil was 0.212 mg/kg,standard deviation was 0.060 mg/kg,and the coefficient of variation was 28.3%,which was at the low variability;baseline values was 0.144 mg/kg.(2)Analyzed the pollution degree of cadmium in surface layer's soil,and showed that,as the standard by baseline values,56.9% of the plough layer's soil was polluted by cadmium in the studied area;as the standard by green vegetable soil environmental quality requirements,the surface layer's soil basically met the pollution-free,green vegetable production,but the presence of point source pollution in the studied area.(3)Analyzed the influence factors of the content of cadmium and the organic matter of physical and chemical properties of the plough layer's soil,the highly significant correlation between the content of cadmium and the organic matter was observed.关键词
菜地/表层土壤/镉/环境地球化学基线/污染程度/北碚区Key words
vegetable field/surface layer's soil/cadmium/environmental geochemical baseline/polluting level/Beibei district分类
资源环境引用本文复制引用
张石棋,傅瓦利,袁波,张婷,蓝家程..北碚区菜地表层土壤镉的环境地球化学基线与污染程度研究[J].水土保持学报,2012,26(5):186-189,4.基金项目
重庆市移民局课题项目 （）
