Spatial heterogeneity of heavy metal contamination in soils and plants in Hefei, China View Full Text


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Article Info

DATE

2019-12

AUTHORS

Qianjin Zhang, Ruoyun Yu, Songling Fu, Zemin Wu, Han Y. H. Chen, Hua Liu

ABSTRACT

The contamination of soil and plants with heavy metals, which has detrimental influences on plant growth, water purification, and food safety, has emerged as a serious global issue. To better understand the spatial variations of contamination of heavy metals associated city development and land use types, we collected soil samples and Magnolia grandiflora branches to quantify lead (Pb) and cadmium (Cd) contents of the roadside, industrial, residential, and park greenbelts in Hefei City, China. We found that Pb content in soil was the highest in roadside greenbelts and the lowest in parks with industrial and residential greenbelts being intermediate, while Cd in soil was the highest in greenbelts close to city center and decreased with the distance to city center. Pb in M. grandiflora, however, did not differ among greenbelt types but decreased with distance to the city center. Cd in M. grandiflora was the highest in roadside and lowest in parks and also decreased with the distance to the city center. Across all greenbelt types and the distances to the city center, Pb and Cd contents were positively correlated in soil and plants. Our findings suggest that vehicle traffic, population density, and age of urbanization collectively contribute to soil and plant contamination of Pb and Cd. More... »

PAGES

1049

References to SciGraph publications

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    http://scigraph.springernature.com/pub.10.1038/s41598-018-36582-y

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    http://dx.doi.org/10.1038/s41598-018-36582-y

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    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/30705298


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