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| Regionally Spatial Variation of Soil Heavy Metals and Their Influences on Vegetable Quality: A Case Study of Baguazhou and Jiangxinzhou, Nanjing, China |
| Received:February 09, 2015 |
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| KeyWord:vegetable production bases;soil heavy metals;spatial variation;vegetable quality |
| Author Name | Affiliation | E-mail | | YUAN Run-jie | College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China | | | YU Gao-wei | College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China | | | QIU Xiao-lei | College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China | | | ZONG Liang-gang | College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China | zonglg@njau.edu.cn | | ZHENG Li-ping | State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing 210042, China | |
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| Abstract: |
| Understanding spatial variation of soil heavy metals is critical to ensuring vegetable quality. Two typical suburban vegetable production bases in Nanjing(Baguazhou and Jiangxinzhou) were selected for this study. Topsoils and corresponding vegetable samples were collected and content of heavy metals in the samples were measured to evaluate the effect of spatial variation of soil heavy metals on vegetable quality. Results showed that the accumulation of heavy metals occurred in the topsoils of Baguazhou, which was resulted from the surrounding chemical industries, the 2nd Nanjing Yangtze River Bridge Highway and the Yangtze River channel. The content of heavy metals in subsoils was similar to that of soil parent materials. Both Baguazhou and Jiangxinzhou had the same soil parent materials: Yangtze River alluvial materials. The simultaneous topsoil and vegetable sampling could improve the risk assessment of soil heavy metal pollution. Available metals in soils showed better correlations with metals in vegetables than total metals did. |
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