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《Journal of Anhui Agricultural Sciences》 2011-17
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Assessment of Potential Ecological Risk of Soil Heavy Metals in Sewage Irrigated Area of Baoding Suburban

LIU Yan-ling et al(School of Resources and Environment Science,Hebei Agricultural University,Baoding,Hebei 071001)  
The ecological risks of soil heavy metals in the sewage irrigated area of Baoding suburban were discussed with the method of single and compound factor potential ecological risk index.The results showed that the soils had serious ecological risks of Cd with the single ecological risk index of six elements in sample points of irrigation area,the risk index was 77.9,and slight risks of Cu,Zn,Cr,Ni and Pb with the index were less than Cd.The risk order of heavy metals was CdPbCuZnCrNi.Among six metals,Cd was the main risk factor in the sewage irrigated area.Integrated ecological risk index of soil heavy metals of individual sample points in the sewage irrigated area was 223.2,which indicated that the soil ecological risk of the area was moderate serious.By comparing the sewage irrigated area with the contrast area,the single potential ecological risk index of six soil heavy metals in contrast area was relatively lighter than that in sewage irrigated area,which didn't achieve minor harm.The integrated ecological risks of heavy metals,except for Cd,wer relatively light in the contrast area.
【Fund】: 国家科技支撑计划子课题项目(2008BAJ08B13-07)
【CateGory Index】: X53
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