DOI: 10.1007/s10533-015-0068-5
Scopus记录号: 2-s2.0-84925517424
论文题名: Natural and anthropogenic processes contributing to metal enrichment in surface soils of central Pennsylvania
作者: Kraepiel A.M.L. ; Dere A.L. ; Herndon E.M. ; Brantley S.L.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 123, 期: 2018-01-02 起始页码: 265
结束页码: 283
语种: 英语
英文关键词: Atmospheric deposition
; Biological uplift
; Metal
; Pollution
; Soils
英文摘要: Metals in soils may positively or negatively affect plants as well as soil micro-organisms and mesofauna, depending on their abundance and bioavailability. Atmospheric deposition and biological uplift commonly result in metal enrichment in surface soils, but the relative importance of these processes is not always resolved. Here, we used an integrated approach to study the cycling of phosphorus and a suite of metals from the soil to the canopy (and back) in a temperate watershed. The behavior of elements in these surface soils fell into three categories. First, Al, Fe, V, Co, and Cr showed little to no enrichment in the top soil layers, and their concentrations were determined primarily by soil production fluxes with little influence of either atmospheric inputs or biological activity. Second, P, Cu, Zn and Cd were moderately enriched in surface soils due to a combination of atmospheric deposition and biological uplift. Among the metals we studied, Cu, Zn and Cd concentrations in surface soils were the most sensitive to changes in atmospheric deposition fluxes. Finally, Mo and Mn showed strong enrichment in the top soil layer that could not be explained strictly by either current atmospheric deposition or biological recycling processes, but may reflect both their unique chemistry and remnants of past anthropogenic fluxes. Mn has a long residence time in the soil partly due to intense biological uplift that retains Mn in the top soil layer. Mo, in spite of the high solubility of molybdate, remains in the soil because of strong binding to natural organic matter. This study demonstrates the need to consider simultaneously the vegetation and the soils to understand elemental distribution within soil profiles as well as cycling within watersheds. © 2015, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83543
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Department of Chemistry, Princeton University, Princeton, NJ, United States; Department of Geosciences and Earth and Environmental Systems Institute, Pennsylvania State University, University Park, PA, United States; Department of Geography/Geology, University of Nebraska at Omaha, Omaha, NE, United States; Department of Geology, Kent State University, Kent, OH, United States
Recommended Citation:
Kraepiel A.M.L.,Dere A.L.,Herndon E.M.,et al. Natural and anthropogenic processes contributing to metal enrichment in surface soils of central Pennsylvania[J]. Biogeochemistry,2015-01-01,123(2018-01-02)