The distribution of selected elements and minerals in soil of the conterminous United States

Woodruff, Laurel G.; Cannon, William F.; Smith, David B.; Solano, Federico

doi:10.1016/j.gexplo.2015.01.006

Cited by 38 publications

(31 citation statements)

References 27 publications

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“…The metalliferous sites studied here showed higher concentrations of trace elements than did the non-metalliferous site by one to five orders of magnitude. Pseudo-total concentrations of most trace elements in rooting soils were within the range of values found in 4857 soil sampling sites distributed in the contiguous United States (Smith et al 2013; Woodruff et al 2015). Concentrations in two metalliferous types of soils were mostly higher than the third quartiles of those samples, indicating metalliferous soils characterized by high concentrations.…”

Section: Discussionsupporting

confidence: 64%

“…In all case, observed values here exceeded the maximum values recorded in another survey of contaminated areas in the US (76.8 and 1700 mg kg −1 respectively, Woodruff et al 2015). Smelting activities, like those at Palmerton, represent the main source of pollution among industrial sources, with a large increase and enrichment of trace elements in the environment compared to geogenic concentrations (Nagajyoti et al 2010).…”

Section: Discussioncontrasting

confidence: 54%

“…Phytostabilization represents another way to remediate, especially in soils with high trace element concentrations like those at industrially contaminated sites The three C 4 grasses studied here are present across a range of soil types including those with high concentrations of Pb and Cd, which are considered hazardous in soil (Järup 2003). With low metal concentrations in leaves and the absence of any correlations between metal levels in soils and plants, members of the Poaceae are excellent candidates for phytoremediation of the many Pb contaminated areas found across the northern United States (Burt et al 2003; Woodruff et al 2015). The could also be used for phytostabilization of serpentine sites, areas contaminated with Ni by industrial activities, or asbestos quarries (Rodríguez-Seijo and Andrade 2015).…”

Section: Discussionmentioning

confidence: 99%

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Differential elemental uptake in three pseudo-metallophyte C4 grasses in situ in the eastern USA

et al. 2017

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Background and aims Elemental uptake in serpentine floras in eastern North America is largely unknown. The objective of this study was to determine major and trace element concentrations in soil and leaves of three native pseudo-metallophyte C4 grasses in situ at five sites with three very different soil types, including three serpentine sites, in eastern USA. Methods Pseudo-total and extractible concentrations of 15 elements were measured and correlated from the soils and leaves of three species at the five sites. Results Element concentrations in soils of pseudo-metallophytes varied up to five orders of magnitude. Soils from metalliferous sites exhibited higher concentrations of their characteristic elements than non-metalliferous. In metallicolous populations, elemental concentrations depended on the element. Concentrations of major elements (Ca, Mg, K) in leaves were lower than typical toxicity thresholds, whereas concentrations of Zn were higher. Conclusions In grasses, species can maintain relatively low metal concentrations in their leaves even when soil concentrations are richer. However, in highly Zn-contaminated soil, we found evidence of a threshold concentration above which Zn uptake increases drastically. Finally, absence of main characteristics of serpentine soil at one site indicated the importance of soil survey and restoration to maintain serpentinophytes communities and avoid soil encroachment.

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Section: Discussionsupporting

confidence: 64%

Section: Discussioncontrasting

confidence: 54%

Section: Discussionmentioning

confidence: 99%

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Differential elemental uptake in three pseudo-metallophyte C4 grasses in situ in the eastern USA

et al. 2017

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“…The primary goal of the CGB project is to provide high-quality geochemical data and element distribution maps of nearly all naturally (Reimann et al, 2009(Reimann et al, , 2011(Reimann et al, , 2012(Reimann et al, , 2014a (Smith, 2009;Smith et al, 2009Smith et al, , 2012aSmith et al, , 2013Woodruff et al, (1) To develop new, or improve existing, sampling methods suitable for China's diverse terrains, particularly for desert (including Gobi) and grassland, where well-researched sampling media, such as floodplain, overbank and stream sediments are not available.…”

Section: Objectives and Tasks Of The Cgb Projectmentioning

confidence: 99%

Reprint of “China geochemical baselines: Sampling methodology”

Wang¹

2015

Journal of Geochemical Exploration

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“…To evaluate the importance of landscape age at the regional scale, we estimated the fraction of Na in soil relative to parent material (Fr) using a regional geochemical database (Smith et al, 2013;Woodruff et al, 2015). This estimate usually entails direct characterization of parent material composition (Brimhall et al, 1992;Chadwick et al, 1990).…”

Section: Introductionmentioning

confidence: 99%

Landscape Age as a Major Control on the Geography of Soil Weathering

Slessarev

Feng

Bingham

et al. 2019

Global Biogeochemical Cycles

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Global‐scale models of rock‐derived nutrient availability often assume that physical erosion drives soils toward an approximate “steady state” over geologic timescales. By definition, steady‐state models do not represent landscape age—that is, the time elapsed since soil formation is initiated by major erosional or depositional events. We hypothesize that this steady‐state assumption has large consequences on estimates of soil fertility because landscape age can mediate the retention of mobile elements in soil, particularly in low‐relief landscapes and humid climates. We quantified the effect of landscape age on soil fertility by estimating Na retention in soils across the United States and explicitly resolving landscape age in regions that experienced significant deposition or glacial retreat after the Last Glacial Maximum (LGM). We then used a simple one‐compartment model to simulate soil formation and weathering, comparing predictions that incorporated landscape age with those based on the steady‐state assumption. We found that soils formed in LGM deposits in low‐relief, humid settings generally retain 10 times more Na than soils formed outside of LGM deposits. Furthermore, the model that accounted for landscape age outperformed a steady‐state model across the United States and increased globally averaged estimates of Na retention by 17%. These results reinforce the idea that landscape age is a major control on weathering and should not be ignored in simulations of nutrient cycling.

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The distribution of selected elements and minerals in soil of the conterminous United States

Cited by 38 publications

References 27 publications

Differential elemental uptake in three pseudo-metallophyte C4 grasses in situ in the eastern USA

Differential elemental uptake in three pseudo-metallophyte C4 grasses in situ in the eastern USA

Reprint of “China geochemical baselines: Sampling methodology”

Landscape Age as a Major Control on the Geography of Soil Weathering

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