农用地土壤重金属的生态风险评价及来源探析

Ecological risk assessment and source analysis of heavy metals in agricultural soil

在人类活动和工业生产的共同影响下,部分农用地土壤中含有大量重金属元素,对农作物的生长产生严重的负面影响。为了对农用地土壤重金属生态风险进行评价,本文首先对农用地土壤重金属污染的危害及来源进行了分析,采用潜在生态危害指数法对某地土壤中重金属元素含量及生态风险进行评价。结果表明,该地区农用地土壤中重金属含量及生态危害指数均处于轻微范围内。重金属元素不仅破坏土壤环境,还会间接危害到人类的身体健康,因此需要对农用地土壤重金属污染风险进行评价,确定其危害程度,为下一步农用地土壤重金属元素治理和修复提供理论数据,以恢复农用地土壤的健康状态。

Under the joint influence of human activities and industrial production,some agricultural soils contain a large amount of heavy metal elements,which have a serious negative impact on the growth of crops.In order to evaluate the ecological risk of heavy metal pollution in agricultural soil,this paper first analyzes the hazards and sources of heavy metal pollution in agricultural soil,and uses the potential ecological hazard index method to evaluate the content of heavy metal elements and ecological risk in a certain soil.The results indicate that the heavy metal content and ecological hazard index in the soil of agricultural land in the region are within a slight range.Heavy metal elements not only damage the soil environment,but also indirectly endanger human health.Therefore,it is necessary to evaluate the risk of heavy metal pollution in agricultural soil to determine the extent of its harm,providing theoretical data for the governance and restoration of heavy metal elements in agricultural soil and restoring the healthy state of agricultural soil.