Determinants of soil carbon dynamics in urban ecosystems

Upadhyay, Shuchi; Raghubanshi, A. S.

doi:10.1016/b978-0-12-820730-7.00016-1

Cited by 23 publications

(8 citation statements)

References 91 publications

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“…The study of soil mechanical composition serves as the foundation for investigating various physical and chemical behaviors of soil, which in turn impact soil fertility, water retention, heat, and soil structure ( Upadhyay and Raghubanshi, 2020 ). Previous research by Lagomarsino et al (2011) and others has demonstrated the impact of adding soil improvers to the soil on its mechanical composition.…”

Section: Resultsmentioning

confidence: 99%

Unveiling the regulatory mechanism of poly-γ-glutamic acid on soil characteristics under drought stress through integrated metagenomics and metabolomics analysis

Hong,

Wei,

Fanglan

et al. 2024

Front. Microbiol.

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It is of utmost importance to understand the characteristics and regulatory mechanisms of soil in order to optimize soil management and enhance crop yield. Poly-γ-glutamic acid (γ-PGA), a stress-resistant amino acid polymer, plays a crucial role in plant drought stress resistance. However, little is known about the effects of γ-PGA on soil characteristics during drought treatments. In this study, the effects of different forms of γ-PGA on soil texture and basic physical and chemical properties under short-term drought conditions were investigated. Furthermore, the impact of γ-PGA on the microbial community and metabolic function of maize was analyzed. Under drought conditions, the introduction of γ-PGA into the soil resulted in notable improvements in the mechanical composition ratio and infiltration capacity of the soil. Concurrently, this led to a reduction in soil bulk density and improved soil organic matter content and fertility. Additionally, metagenomic analysis revealed that under drought conditions, the incorporation of γ-PGA into the soil enhanced the soil microbiota structure. This shift led to the predominance of bacteria that are crucial for carbon, nitrogen, and phosphorus cycles in the soil. Metabolomics analysis revealed that under drought treatment, γ-PGA affected soil metabolic patterns, with a particular focus on alterations in amino acid and vitamin metabolism pathways. Correlation analysis between the soil metagenome and metabolites showed that microorganisms played a significant role in metabolite accumulation. These results demonstrated that γ-PGA could improve soil characteristics under drought conditions and play an important role in soil microorganisms and microbial metabolism, providing further insights into the changes in soil characteristics under drought conditions.

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Section: Resultsmentioning

confidence: 99%

Unveiling the regulatory mechanism of poly-γ-glutamic acid on soil characteristics under drought stress through integrated metagenomics and metabolomics analysis

Hong,

Wei,

Fanglan

et al. 2024

Front. Microbiol.

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“…Sludge biophysical parameters are influenced by sludge texture, which is a very stable property. The Texture is linked to porosity, which governs water holding capacity, gaseous diffusion, and water flow, which also influence its materials health [44]. The Sodium Adsorption Ratio (SAR) is used to express the relative activity of sodium ions in the exchange reactions with the soil.…”

Section: Resultsmentioning

confidence: 99%

Characteristic Study of Industrial Sludge, Treatment and Their Disposal Mechanism

Shete

Deshpande

2022

EPRA

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This research papers is the characteristic study and suggestive measure for disposal mechanism for the sludge. Sludge is one of the important common waste materials which is generated in tons per day from many industries. The different types of waste materials can undergo various treatment based upon its characteristics which also resulted in the variation for the treatment like Stabilization before disposal, Direct Landfill (DLF), Alternative Fuel and Raw material (AFRF), Incineration, Solvent recovery, Chemical treatment, Recycling of metals and others for the Hazardous waste management process. The various physicochemical, gravimetric and spot test were carried out in order to determine the quality of the waste and its suitability for the disposal by following different national and international methods. Further, Heavy metals were also analyzed by AAS obtained by following different methods in different forms like TM, TCLP and WLT which also indicated that the heavy metals are within the limits. Overall, the results obtained were found to be within the limits provided by the CPCB guidelines and the waste is suitable for the direct landfill disposal mechanism. KEYWORDS: Industrial Sludge, Hazardous Waste Management, Heavy metals

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“…The most abundant elements in croplands were Al, Fe and Mn with 63.4, 42.2 and 57.6 mg.kg -1 on average respectively. One of the typical characteristics of tropical soils is their marked alteration with rather lower pH values (Upadhyay and Raghubanshi, 2020). Coincidentally, Al, Fe and Mn were also the most abundant elements in forests, with values averaging 222.2, 162.6 and 163.0 mg.kg -1 respectively.…”

Section: Mining Area Forestmentioning

confidence: 98%

Baseline Concentrations of 11 Elements as a Function of Land uses in Surface Soils of the Katangese Copperbelt Area (D.R. Congo)

Mpinda¹,

Kisimba²,

Mwamba³

et al. 2021

American Journal of Environmental Sciences

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The Katangese Copperbelt Area (KCA) located south-eastern of D.R. Congo presents high concentration of Metal Trace Elements (MTE) due to a rich natural geochemical background and intense mining activities. However, the lack of data on specific baseline concentrations makes it difficult to assess and monitor the environmental quality of soils in the region. In this study, 11 MTE were measured across three land uses (croplands, forest and mining areas) to assess their baseline concentrations in topsoils of the KCA. Results showed the following (geometric) mean concentrations (mg.kg -1 ) in cropland soils: Al (54.6), Co (0.5), Cr (0.1), Cu (3.7), Fe (33.0), Mn (44.8), Ni (0.2), Pb (0.6), Zn (1.0), Ti (2.4), pH (5.3); in forests: Al (148.0), Cd (0.1), Co (1.9), Cr (2.2), Cu (12.3), Fe (156.4), Mn (86.9), Ni (1.1), Pb (1.9), Zn (3.7), Ti (0.4), pH (4.3); and in mining areas: Al (42.8), Cd (1.3), Co (7.0), Cr (0.1), Cu (115.5), Fe (53.3), Mn (26.1), Ni (0.5), Pb (8.2), Zn (93.1), Ti (0.3), pH (5.8). Cu and Zn were higher in mining areas compared to other land uses, demonstrating a prevalent influence of mining activities in altering the natural background of metals concentrations in the region. By contrast, croplands and forest shared a similar trend of Al and Mn contents, suggesting a mild influence of agricultural activity. This study is the first attempt to establish reference values of MTE contents in the KCA soils and thus provides valuable information for legislative purposes and for soil quality assessment.

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Determinants of soil carbon dynamics in urban ecosystems

Cited by 23 publications

References 91 publications

Unveiling the regulatory mechanism of poly-γ-glutamic acid on soil characteristics under drought stress through integrated metagenomics and metabolomics analysis

Unveiling the regulatory mechanism of poly-γ-glutamic acid on soil characteristics under drought stress through integrated metagenomics and metabolomics analysis

Characteristic Study of Industrial Sludge, Treatment and Their Disposal Mechanism

Baseline Concentrations of 11 Elements as a Function of Land uses in Surface Soils of the Katangese Copperbelt Area (D.R. Congo)

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