Urbanization Leads to Increases in pH, Carbonate, and Soil Organic Matter Stocks of Arable Soils of Kumasi, Ghana (West Africa)

Asabere, Stephen Boahen; Zeppenfeld, Thorsten; Nketia, Kwabena Abrefa; Sauer, Daniela

doi:10.3389/fenvs.2018.00119

Cited by 46 publications

(31 citation statements)

References 69 publications

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“…Soil IC stocks make an important contribution to sealed soils and subsoils in cities, highlighting their importance as hidden stocks in C assessments (Vasenev and Kuzyakov, 2018). The importance of calcium-rich minerals and dissolved carbonates in urban soil has been highlighted for the removal of CO 2 to form calcium carbonate (Washbourne et al, 2015;Jorat et al, 2020), which is a process that is also being promoted for agricultural soils as a carbon capture mechanism (Beerling et al, 2020). While little is known about water or air flow under sealed surfaces, this process has been observed in sealed soils where cracks in paving have allowed water to infiltrate, and dissolved calcium reacted to form calcium carbonate which then moved into deeper soil horizons (Kida and Kawahigashi, 2015).…”

Section: Sa Soil and Anthropogenic Additionsmentioning

confidence: 99%

The effects of sealing on urban soil carbon and nutrients

O'Riordan

Davies

Quinton

2021

SOIL

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Abstract. Urban soils are of increasing interest for their potential to provide ecosystem services such as carbon storage and nutrient cycling. Despite this, there is limited knowledge on how soil sealing with impervious surfaces, a common disturbance in urban environments, affects these important ecosystem services. In this paper, we investigate the effect of soil sealing on soil properties, soil carbon and soil nutrient stocks. We undertook a comparative survey of sealed and unsealed green space soils across the UK city of Manchester. Our results reveal that the context of urban soil and the anthropogenic artefacts added to soil have a great influence on soil properties and functions. In general, sealing reduced soil carbon and nutrient stocks compared to green space soil; however, where there were anthropogenic additions of organic and mineral artefacts, this led to increases in soil carbon and nitrate content. Anthropogenic additions led to carbon stocks equivalent to or larger than those in green spaces; this was likely a result of charcoal additions, leading to carbon stores with long residence times. This suggests that in areas with an industrial past, anthropogenic additions can lead to a legacy carbon store in urban soil and make important contributions to urban soil carbon budgets. These findings shed light on the heterogeneity of urban sealed soil and the influence of anthropogenic artefacts on soil functions. Our research highlights the need to gain a further understanding of urban soil processes, in both sealed and unsealed soils, and of the influence and legacy of anthropogenic additions for soil functions and important ecosystem services.

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Section: Sa Soil and Anthropogenic Additionsmentioning

confidence: 99%

The effects of sealing on urban soil carbon and nutrients

O'Riordan

Davies

Quinton

2021

SOIL

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“…Urbanization leads to alkalinization of the soil due to input of some alkaline ions, such as calcium ions (Ca 2+ ) or sodium ions (Na + ) (Lovett et al, 2000;Pouyat et al, 2008). Urbanization leads to an increase in pH, stock of carbonates and organic matter in soils (Asabere et al, 2018). Thus, urbanization affects environmental factors that are essential for terrestrial molluscs.…”

Section: Introductionmentioning

confidence: 99%

Impact of recreational transformation of soil physical properties on micromolluscs in an urban park

et al. 2021

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The paper assesses the effect of transformation of soil physical properties on the abundance of micromolluscs in the conditions of an urban park. The studies were carried out in Novooleksandrivskiy Park (Melitopol, Ukraine). An experimental polygon was represented by 7 transects with 18 sampling points in each. The interval between the points in the transect, as well as the interval between transects, was 3 meters. The total area of the polygon was 1,134 m2. The tree species growing within the polygon were Quercus robur, Sophora japonica, and Acer campestre. Shrubs were represented by Ulmus laevis, Tilia cordata, Celtis occidentalis, and Morus nigra. The locations of the trees and shrubs were mapped. The crowns of tree and shrub plants formed a dense canopy and a shady light regime. The grass cover was practically absent. The soil mechanical resistance, soil aggregate-size distribution, electrical conductivity of soil, soil moisture and bulk density were measured. We recorded 618 individuals of Vallonia pulchella, 120 individuals of Cochlicopa lubrica, and 58 individuals of Acanthinula aculeata within the surveyed polygon. We extracted three principal components, which could explain 60.9% of the variation in the feature space of the soil properties. The principal component 1 explained 42.0% of the variation of the feature space and depended on the soil penetration resistance throughout the whole profile, aggregate composition, density, electric conductivity and moisture content of soil. This component reflected a tendency for soil penetration resistance and soil density to increase near recreational trails. The principal component 1 was used to indicate the gradient of recreational transformation of the soil. The principal component 2 was able to explain 10.6% of the variation in the feature space. It negatively correlated with the distance from the recreational trail, soil penetration resistance at the depth of 35 cm or more, soil electrical conductivity, and the proportion of aggregates greater than 3 mm in size. This component positively correlated with soil penetration resistance at 0–5 cm depth and the proportion of aggregates less than 0.5 mm in size. This component can be interpreted as a "halo" from the recreational trail, or a gradient of indirect soil transformations adjacent to the zone of intense recreational load. The principal component 3 was able to explain 8.3% of the variation in the feature space. It positively correlated with soil penetration resistance at the depth of 20–40 cm, the proportion of 0.5–7.0 mm aggregates, and soil moisture. It negatively correlated with the proportion of aggregates larger than 7 mm and smaller than 0.25 mm. This component indicated a variation in soil properties that was induced by causes independent of recreational exposure. The extracted gradients of soil properties significantly influenced the abundance of micromollusc populations. The abundance of all species decreased after increase in recreational load. Micromollusc species responded to direct recreational exposure as plateau (C. lubrica) and asymmetric unimodal responses (V. pulchella and A. aculeata).

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“…The enrolling rate of urbanization is also causing soil erosion and degradation. Urban growth has already led to the degradation of huge areas, salinization and contamination of soils with heavy and trace metals, changes in acidity, and the shielding of soils due to the laying of asphalt covers [19][20][21][22]. As a rule, urban development occurs gradually and the primary settlements are formed on productive soils.…”

Section: Introductionmentioning

confidence: 99%

Agrochemical and Pollution Status of Urbanized Agricultural Soils in the Central Part of Yamal Region

et al. 2021

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This research looked at the state of soils faced with urbanization processes in the Arctic region of the Yamal-Nenets Autonomous District (YANAO). Soils recently used in agriculture, which are now included in the infrastructure of the cities of Salekhard, Labytnangi, Kharsaim, and Aksarka in the form of various parks and public gardens were studied. Morphological, physico-chemical, and agrochemical studies of selected soils were conducted. Significant differences in fertility parameters between urbanized abandoned agricultural soils and mature soils of the region were revealed. The quality of soil resources was also evaluated in terms of their ecotoxicology condition, namely, the concentrations of trace metals in soils were determined and their current condition was assessed using calculations of various individual and complex soil quality indices.

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Urbanization Leads to Increases in pH, Carbonate, and Soil Organic Matter Stocks of Arable Soils of Kumasi, Ghana (West Africa)

Cited by 46 publications

References 69 publications

The effects of sealing on urban soil carbon and nutrients

The effects of sealing on urban soil carbon and nutrients

Impact of recreational transformation of soil physical properties on micromolluscs in an urban park

Agrochemical and Pollution Status of Urbanized Agricultural Soils in the Central Part of Yamal Region

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