Classification of anthrosols with vitric/andic properties derived from lignite ash

Zikeli, Sabine; Kastler, Michael; Jahn, Reinhold

doi:10.1016/j.geoderma.2004.05.004

Cited by 28 publications

(17 citation statements)

References 14 publications

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“…As a result, a soil forms with properties which are likely to differ vastly from those of the unweathered parent ash (Zikeli et al, 2002(Zikeli et al, , 2005. This will, in turn, influence nutrient availability, soil biological activity and soil physical conditions and thus plant growth.…”

Section: Weathering Processes In Fly Ashmentioning

confidence: 99%

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Reclamation and revegetation of fly ash disposal sites – Challenges and research needs

Haynes

2009

Journal of Environmental Management

238

122

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Section: Weathering Processes In Fly Ashmentioning

confidence: 99%

“…Indeed, Zikeli et al (2005) found that soils derived from lignite ash have many soil chemical properties similar to volcanic soils although they can contain unusually large amounts of gypsum, calcium and magnesium carbonates and organic C depending on the composition of the parent coal.…”

Section: Weathering Processes In Fly Ashmentioning

confidence: 99%

Reclamation and revegetation of fly ash disposal sites – Challenges and research needs

Haynes

2009

Journal of Environmental Management

238

122

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“…3b), horizons cannot be classified as organic according to the German soil classification (Ad-hoc-AG Boden 2005; see also and Zikeli et al (2005)). We designate these horizons as mixtures of forest floor humus and anthropogenic, unconsolidated and weathered parent material (Of/Oh + ylCv).…”

Section: Discussionmentioning

confidence: 99%

Changes in soil physical properties of forest floor horizons due to long-term deposition of lignite fly ash

2009

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Background, aim, and scope From the beginning of the twentieth century until the 1990s, energy in Upper Lusatia, Saxony in Eastern Germany was produced at power plants that burnt lignite coals. As a result, alkaline fly ash and aerosols from the combustion of brown coal have accumulated in adjacent areas that are partly under forestry. We ask the question, "how have these atmospheric depositions of fly ash influenced the soil physical properties (bulk density, particle density, saturated hydraulic conductivity, pore size distribution, and water repellency) of forest floor horizons?" Materials and methods The experimental sites represented typical soil types and stands of the sylviculturally used areas in the region of Upper Lusatia. Three forest sites were located close to the emission sources, where high amounts of fly ashes accumulated, and three control sites were without fly ash enrichment. Pore size distribution, saturated hydraulic conductivity, and bulk density were examined with undisturbed samples (metal cylinder 100 cm³). Disturbed samples were used for the characterization of particle density, texture, and water repellency (Wilhelmy plate method). Additionally, the carbon content was determined. Scanning electron microscopy was used to show fly ash enrichment. Results The enrichment of mineral fly ash particles could be proven for sites close to the emission source. Using scanning electron microscopy, spherical fly ash particles could be identified. Total quantities of persistent fly ash enrichment amounted to approximately 150-280 Mg ha -1 . The enrichment of fly ash affected the soil-physical characteristics. Close to the emission source (sandy fly ashes), particle density, air capacity, and saturated hydraulic conductivity were significantly increased, whereas the plant available water was significantly reduced. With increasing distance from the emission source (silty fly ashes or no ash enrichment), air capacity and saturated hydraulic conductivity were reduced, while an increase of plant available water was observed. Furthermore, the forest floor horizons close to the emission source were characterized by significantly reduced water repellency due to the dominance of hydrophilic mineral fly ash particles. Discussion Fly ash deposition in Upper Lusatia must be considered as relevant for properties of forest soils. Mean particle density was significantly higher at sites with fly ash accumulation. This indicates the admixture of mineral particles. While bulk densities were not noticeably influenced, the increase of particle density and the dominance of sandy to coarse silty particles close to the emission sources cause an increase in total porosity, air capacity, and a relative reduction of plant available water. Hollows in spherical fly ash particles might contribute to the meso-and macropores. Due to the admixture of hydrophilic fly ash, the enriched forest floor horizons feature a distinct increase in potential wettability, which coincides with a higher pore and, hence, nutrient and contaminant ac...

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“…Zikeli et al, 2002;Grünewald et al, 2007). As a result of leaching, soluble compounds can precipitate in deeper layers (e.g., secondary calcite in cracks: Huot et al, 2014a) and lead to the formation of calcic (e.g., Howard et al, 2013), gypsic (e.g., Zikeli et al, 2002Zikeli et al, , 2005 or sodic (e.g., Santini and Fey, 2015) horizons.…”

Section: Similar Processes Of Soil Formation From Technogenic and Natmentioning

confidence: 99%

Pedogenetic Trends in Soils Formed in Technogenic Parent Materials

2015

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Soils formed in technogenic parent materials are proliferating and their pedogenesis remains inadequately understood. Upon investigation of soils formed in various technogenic materials reported in the literature and of a Technosol developing on iron industry deposits, potential specificities of pedogenesis within technogenic materials are discussed. Analyses have shown that pedogenetic processes observed in these soils are similar to those occurring in natural soils. However, some particularities have been highlighted, such as the coexistence of processes rarely encountered simultaneously in natural environments or high rates of soil development during the first stages of weathering. Technogenic materials display highly diverse constituents, wide spatial variability, and temporal discontinuities as a result of human activities. These inherent features, in interaction with other soil-forming factors, may govern the pedogenesis by generating the following conditions: i) a high diversity of pedogenetic processes, including processes occurring usually in dissimilar climatic regions, ii) localized processes and distinct rates and orientations of soil development over short distance and iii) a succession and/or a superimposition of processes, constrained by the deposition of materials and human operations. This creates the potential for the simultaneity of processes coexisting rarely in natural soils developing in the same climatic region. These soils are likely to have a polycylic evolution and to evolve towards groups of soils other than Technosols, depending on the dominant processes. Further investigations of the processes and their potential interactions occurring in a larger range of soils formed in technogenic materials are required to better predict the evolution of these soils.

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Classification of anthrosols with vitric/andic properties derived from lignite ash

Cited by 28 publications

References 14 publications

Reclamation and revegetation of fly ash disposal sites – Challenges and research needs

Reclamation and revegetation of fly ash disposal sites – Challenges and research needs

Changes in soil physical properties of forest floor horizons due to long-term deposition of lignite fly ash

Pedogenetic Trends in Soils Formed in Technogenic Parent Materials

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