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Int. J. Environ. Res. Public Health 2016, 13(5), 510; doi:10.3390/ijerph13050510

Which Factors Determine Metal Accumulation in Agricultural Soils in the Severely Human-Coupled Ecosystem?

Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
Beijing Municipal Key Laboratory of Agriculture Environment Monitoring, Beijing 100097, China
Author to whom correspondence should be addressed.
Academic Editors: Yu-Pin Lin, Rao Bhamidiammarri and Kiran Tota-Maharaj
Received: 4 February 2016 / Revised: 5 April 2016 / Accepted: 25 April 2016 / Published: 17 May 2016
(This article belongs to the Special Issue Environmental Systems Engineering)
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Agricultural soil is typically an important component of urban ecosystems, contributing directly or indirectly to the general quality of human life. To understand which factors influence metal accumulation in agricultural soils in urban ecosystems is becoming increasingly important. Land use, soil type and urbanization indicators all account for considerable differences in metal accumulation in agricultural soils, and the interactions between these factors on metal concentrations were also examined. Results showed that Zn, Cu, and Cd concentrations varied significantly among different land use types. Concentrations of all metals, except for Cd, were higher in calcareous cinnamon soil than in fluvo-aquic soil. Expansion distance and road density were adopted as urbanization indicators, and distance from the urban center was significantly negatively correlated with concentrations of Hg, and negatively correlated with concentrations of Zn, and road density was positively correlated with Cd concentrations. Multivariate analysis of variance indicated that Hg concentration was significantly influenced by the four-way interaction among all factors. The results in this study provide basic data to support the management of agricultural soils and to help policy makers to plan ahead in Beijing. View Full-Text
Keywords: heavy metal; land use; soil type; urbanization; interaction heavy metal; land use; soil type; urbanization; interaction

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Xu, L.; Cao, S.; Wang, J.; Lu, A. Which Factors Determine Metal Accumulation in Agricultural Soils in the Severely Human-Coupled Ecosystem? Int. J. Environ. Res. Public Health 2016, 13, 510.

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