Which Factors Determine Metal Accumulation in Agricultural Soils in the Severely Human-Coupled Ecosystem?
文献类型: 外文期刊
作者: Xu, Li 1 ; Cao, Shanshan 1 ; Wang, Jihua 1 ; Lu, Anxiang 1 ;
作者机构: 1.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Agr Stand & Testing, Beijing 100097, Peoples R China
2.Beijing Municipal Key Lab Agr Environm Monitoring, Beijing 100097, Peoples R China
关键词: heavy metal;land use;soil type;urbanization;interaction
期刊名称:INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH ( 影响因子:3.39; 五年影响因子:3.789 )
ISSN: 1660-4601
年卷期: 2016 年 13 卷 5 期
页码:
收录情况: SCI
摘要: 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.
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