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

Abstract

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.

Study of potential harmful elements (arsenic, mercury and selenium) in surface sediments from Serbian rivers and artificial lakes

“…Hg pristine concentrations vary between 0.08 and 0.4 mg kg -1 (Issaro et al, 2009), indicating mercury emissions from anthropogenic sources in the studied area. Results of comparisons of the obtained results with other published results for mercury (Table 2) indicate that mercury contents in Serbian river and lakes are higher that the levels measured in topsoil in Armenia Tepanosyan et al (2016) and river sediment from Spain (Roig et al, 2011), but roughly similar to measured values in soil from China (Xu et al, 2016), river sediments from Ghana (Oppong et al, 2010), Sava river (Milačič et al 2010) and Tisa river (Sakan et al 2012). The sediments mercury contents measured in this study area, however, lower than those found in soil from sewage irrigation area of northwest China .…”

Pollution intensity-dependent metal accumulation in ground beetles: a meta-analysis

“…Partition between available and total metal concentrations, and forms of metals in soils, are decisive respecting the accumulation in beetles and also in other organisms (Ignatowicz 2017). Additionally, other soil parameters such as soil pH, loam content, and hydrological conditions also influence the migration and uptake of metals considerably (Rakesh Sharma and Raju 2013; Xu et al 2016b). In addition, ground beetle species and their specific inherent characteristics determine the accumulation pattern significantly (Avgın and Luff 2010; Butovsky 2011).…”