不同类型农田的重金属分布研究

Study on Distribution of Heavy Metals in Different Types of Farmland

为了探讨矿区农田不同土地利用类型和土层深度对土壤重金属分布的影响,对潼关金矿区5种类型农用地不同土层的土壤重金属进行了研究。结果表明:土地利用类型和土层之间,不同土地利用类型对土壤重金属的分布影响更大。5种类型农用地中,重金属Ni、Cu、Zn、Cd之间均存在正相关性,可能来自同一污染源,但均不存在重金属污染风险。

In order to investigate the effects of different land use types and soil depths on the distribution of heavy metals in soils in mining areas,heavy metals in different soil layers of five types of agricul-tural land in Tongguan gold mining area were studied.The results show that different land use types have a greater impact on the distribution of heavy metals in soils between land use types and soil layers.Among the five types of agricultural land,there is a positive correlation between heavy metals Ni,Cu,Zn and Cd,which may come from the same pollution source,but there is no risk of heavy metal pollution.