摘要
通过分析内梅罗指数法、地质累积指数法、富集因子法、污染负荷指数法、潜在生态风险指数法等评价方法来阐述农田重金属存在的污染风险格局,众多研究中常用的评价法均表明当前农田受到重金属的危害处于比较严重的局面。研究总结了几种常用的土壤重金属评价方法的优点与缺点,并对土壤重金属污染景观格局、土壤重金属污染空间分布格局进行综述,结果表明不同土壤重金属在全局空间上具有一定的相似;并指出农田土壤重金属污染风险格局存在的问题进行展望。
The risk model of heavy metal pollution in farmland is analyzed by using Nemerow index method, geological accumulation index method, enrichment factor method, pollution load index method and potential ecological risk index method. At present, the harms of cultivated land to heavy metals are serious. The research summarizes the advantages and disadvantages of several commonly used soil heavy metal evaluation methods and summarizes the landscape pattern of soil heavy metal pollution and the spatial distribution pattern of soil heavy metal pollution, indicating that different soil heavy metals have similarities in the global space and the spatial pattern of heavy metals. Besides, it points out the problems existing in the risk pattern of heavy metal pollution in farmland soil.
出处
《土壤科学》
2018年第4期77-84,共8页
Hans Journal of Soil Science
基金
国家自然科学基金委员会-贵州省人民政府喀斯特科学研究中心项目:喀斯特地区重金属污染过程与防控机制研究(U1612442)。
作者简介
第一作者:韦小了;通讯作者:何腾兵。
