【摘要】 为阜阳市设施蔬菜安全生产和土壤重金属污染监测提供参考依据,通过野外采样和实验室分析,对阜阳市设施菜地中Zn、Cu、Pb、Cd、Cr和Ni等6种重金属的含量特征进行研究,并利用单因子污染指数法、地累积指数法和潜在生态风险指数法对各种重金属的生态风险进行评价。结果表明:与温室蔬菜产地环境质量评价标准的限定值相比,Zn、Cu、Cd和Cr平均含量均没有超过限定值,部分区域Pb、Ni含量超过限定值。单因子污染指数法评价,阜阳市颖州区和颖泉区设施菜地表层土壤Pb和Ni有一定程度污染,其他区域属于清洁水平;地累积指数法评价,研究区域有不同程度的Ni、Zn及Pb的污染,未受到Cu、Cd和Cr的污染;潜在生态风险指数法评价,6种重金属均未对采样点生态系统造成风险,整个研究区域土壤综合潜在生态风险程度属于轻微水平。更多还原

【Abstract】 In order to provide references for the safe production of vegetables and soil heavy metal pollution monitoring in greenhouse vegetable soils in Fuyang City,through field sampling and laboratory analysis,the content characteristics of six heavy metals such as Zn,Cu,Pb,Cd,Cr and Ni in greenhouse vegetable soils of Fuyang City were determined. The single factor pollution index method,geoaccumulation index and the potential ecological risk index method were used to evaluate the ecological risk of various heavy metals.Results:The average content of Zn,Cu,Cd and Cr did not exceed the limit value compared with the limit value of environmental quality evaluation criteria for greenhouse vegetable production areas,and in some areas Pb and Ni content exceeded the limitation.The single factor pollution index evaluation showed that the surface soil Pb and Ni in the vegetable field in Yingzhou District and Yingquan District of Fuyang City had a certain degree of pollution,and other areas were at the clean level.The geoaccumulation index evaluation showed that varying degrees of Ni,Zn and Pb pollution existed in the study area and the soil was not contamined by Cu,Cd and Cr.The potential ecological risk evaluation showed that none of the six heavy metals posed a risk to the sampling point ecosystem.The overall potential ecological risk of the soil in the entire study area was at slight level.更多还原