安徽农业科学Issue(36)：17578-17580,17675,4.
农灌区土壤重金属形态分布及潜在生态风险
Speciation Characteristics and Potential Ecological Risk of Heavy Metals in Soil in Irrigation District
摘要
Abstract
Based on the heavy metal content and chemical speciation analysis of soil column sample in typical agricultural irrigation areas of Guanzhong Basin, the potential ecological risk of the irrigation areas soil was evaluated using Hakanson potential ecological risk index. The results showed that Cd and Pb content in agricultural irrigation areas soil were more than Shaanxi Province soil background value. In the soil profile , the content of Cd, Pb and Cr show the fluctuation increasing trend, wholly. The mainly chemical speciation of Cd, Pb and Cr were residual, the secondly chemical speciation of Cd, Pb and Cr were bound to iron and manganese oxides and bound to organic matter. The content of bio-availability in different agricultural irrigation areas were Jinghuiqu irrigation district > Jiaokou irrigation district > Luohuiqu irrigation district. The potential ecological risk of heavy metals were Cd > Pb > Cr. The heavy metal potential ecological risk degree was strength in Jiaokou irrigation district and Luohuiqu irrigation district. So, the preliminary treatment and prevention about heavy metals is very necessary in agricultural irrigation areas.关键词
农灌区/重金属/分布特征/风险评价/关中盆地Key words
Irrigation district/ Heavy metal/ Distribution characteristics/ Risk assessment/ Guanzhong basin分类
农业科技引用本文复制引用
孙亚乔,段磊,徐中华,李波..农灌区土壤重金属形态分布及潜在生态风险[J].安徽农业科学,2012,(36):17578-17580,17675,4.基金项目
国家自然科学基金项目(41102150,41002086) （41102150,41002086）
中央高校科研专项基金(CHD2010JC029,CHD2010JC051). （CHD2010JC029,CHD2010JC051）
