喀斯特地区农田土壤重金属污染及其对人体健康的危害

Heavy Metal Pollution in Agricultural Soils of the Karst Areas and Its Harm to Human Health

农田土壤重金属污染事件在全国各地频频发生。贵州等喀斯特地区因其特殊的地貌形态、脆弱的生态环境以及不合理的人类活动导致土壤重金属污染严重。本文综述了喀斯特地区农田土壤重金属污染现状,分析了重金属污染对人体健康造成的危害,提出加强立法和执法,强化对各类工矿企业的清洁生产审核力度,以避免和减少污染发生;对重金属污染严重土壤采用生物修复技术等手段来逐步恢复。

Incidents of heavy metal pollution in farmland soil occur frequently throughout the country.Special topography,fragile ecological environment and unreasonable human activities lead to serious heavy metal pollution in soil of the karst areas.This paper reviews the current situation of heavy metal pollution in agricultural soil of the karst region,analyzes it’s risk to human health,proposes to strengthen legislation and law enforcement,and strengthens cleaner production audit for industrial and mining enterprises to prevent and reduce contamination.Several soil bioremediation methods are suggested for heavy metal polluted soils for the recover.