Elemental mobilisation by sheet erosion affected by soil organic carbon and water fluxes along a radiotraced soil catena with two contrasting parent materials

Gaspar, Leticia; Lizaga, Iván; Izquierdo, Ana Navas

doi:10.1016/j.geomorph.2020.107387

Cited by 9 publications

(2 citation statements)

References 39 publications

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“…The physical process of soil erosion mobilizes base cations (e.g., Ca, Mg, K, Na), heavy metals (e.g., Fe) and biogenic elements (C, N, P) downslopes, where they are deposited as colluvial material (Gaspar et al 2020). However, a significant part of eroded soil material is transported from terrestrial slopes, into the kettle hole water and finally accumulates as kettle hole sediment.…”

Section: Introductionmentioning

confidence: 99%

Kettle holes reflect the biogeochemical characteristics of their catchment area and the intensity of the element-specific input

Nitzsche

Kleeberg²,

Hoffmann

et al. 2022

J Soils Sediments

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PurposeKettle holes are small inland water bodies known to be dominated by terrigenous material; however, the processes and structures that drive the enrichment and depletion of specific geochemical elements in the water column and kettle hole sediment remain unclear. We hypothesized that the mobile elements (Ca, Fe, K, P) behave different from each other in their transport, intermediate soil retention, and final accumulation in the kettle hole sediment. MethodsTopsoils from transects spanning topographic positions from erosional to depositional areas, sediment cores, shallow groundwater, and kettle hole water of two glacial kettle holes in NE Germany (Rittgarten -RG, and Kraatz -KR) were collected. The Fe, Ca, K, total P (TP) concentrations were quantified and additionally the major anions in shallow groundwater and kettle hole water. The element-specific mobilization, relocation and, finally, accumulation in the sediment was investigated by enrichment factors. Furthermore, a piper diagram was used to estimate groundwater flow directions and pond-internal processes. ResultsAt KR only, the upper 10 cm of the kettle hole sediment reflected the relative element composition of the eroded terrestrial soils. The sediment from both kettle holes was enriched in Ca, Fe, K and P compared to topsoils indicating several possible processes including the input of clay and silt sized particles enriched in these elements, fertilizer input, pond-internal processes including biogenic calcite and hydroxyapatite precipitation, Fe-P binding (KR), FeSx formation (RG) and elemental fixation and deposition via floating macrophytes (RG).High Ca concentrations in the kettle hole water indicated a high input of Ca from shallow 3 groundwater inflow, while Ca precipitation in the kettle hole water led to lower Ca concentration in groundwater outflow. ConclusionsThe considerable element losses in the surrounding soils and the inputs into the kettle holes should be addressed by comprehensive soil and water protection measures, i.e., avoiding tillage, fertilizing conservatively, and creating buffer zones.

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Section: Introductionmentioning

confidence: 99%

Kettle holes reflect the biogeochemical characteristics of their catchment area and the intensity of the element-specific input

Nitzsche

Kleeberg²,

Hoffmann

et al. 2022

J Soils Sediments

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“…Atterberg limits of soils have been studied in relation to soil stabilities and general characteristics by several researchers (Deng et al, 2017; Parmar et al, 2021; Sharmeen & Willgoose, 2006). Chemical properties and available nutrients present in the soil determine vegetation growth, which indirectly relates to erosion (Alexander, 1982; Battaglia et al, 2003; Campbell, 1997; Gaspar et al, 2020; Summa & Giannossi, 2013; Thornes, 1985).…”

Section: Introductionmentioning

confidence: 99%

Role of physico‐chemical properties of the soil in badlands forming processes around Chitrakoot, India

Singh

Jha

Tignath³

et al. 2022

Land Degrad Dev

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Eco‐restoration attempts in badlands are generally not fully successful because physical solutions such as reshaping and leveling of gullies and ravines to check erosion and soil losses prove to be temporary in nature. In this context, it leads to conceptualization that the cause of badland formation is not merely topographical but should be related to changes in the intrinsic properties of soils. There is a lack of understanding as to the formative role of physico‐chemical characteristics of soils in the formation of badlands. The objective of our study is to determine such critical physico‐chemical characteristics of soils that are responsible for the onset of a self‐aggravating erosive network of badlands by undertaking a case‐study of part of the Mandakini River watershed, Chitrakoot, India. Standard IS codes were followed in determining these properties. These soils have a silt‐loam texture with high bulk density. Depletion of clays lowered Atterberg limits which consequently rendered the soils unstable even at low values of moisture content. The overlay analysis of these properties and drainage frequency shows perfect superimposition in categorizing badlands into zones of the severity of degradation. The chemistry of these soils has low sodium, high calcium with the presence of calcretes, low organic matter, and a low amount of illites and are mostly alkaline. The outcome of the study is helpful in understanding mutual interdependence between soil characteristics and processes of badlands that led to the intensification of rills‐gullies‐channels network. The findings would be useful in land management planning.

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On the ordered nature of redistribution of technogenic elements in undisturbed elementary landscape-geochemical systems of the temperate zone on the example of the Chernobyl 137Cs fallout

Korobova

Romanov²,

Bech

et al. 2021

Environ Geochem Health

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Elemental mobilisation by sheet erosion affected by soil organic carbon and water fluxes along a radiotraced soil catena with two contrasting parent materials

Cited by 9 publications

References 39 publications

Kettle holes reflect the biogeochemical characteristics of their catchment area and the intensity of the element-specific input

Kettle holes reflect the biogeochemical characteristics of their catchment area and the intensity of the element-specific input

Role of physico‐chemical properties of the soil in badlands forming processes around Chitrakoot, India

On the ordered nature of redistribution of technogenic elements in undisturbed elementary landscape-geochemical systems of the temperate zone on the example of the Chernobyl 137Cs fallout

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