Differences in the ratio of soil microbial biomass carbon (MBC) and soil organic carbon (SOC) at various altitudes of Hyperalic Alisol in the Amazon region of Ecuador

Mendoza, Benito; Bejar, Jaime; Luna, Daniel; Osorio, Miguel; Jiménez, Mauro; Melendez, Jesus R.

doi:10.12688/f1000research.22922.1

Cited by 13 publications

(11 citation statements)

References 33 publications

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“…MBC represents the living component of SOC and is considered to reflect LC levels in soil systems (Gonzalez-Quiñones et al, 2011;Mendoza et al, 2020). Soils from FL systems showed the highest amount of MBC levels mostly from the larger amounts of aboveground residues and root biomass (Holden and Treseder, 2013;Kumar et al, 2021).…”

Section: Changes In Soil Carbon Pools and Microbial Quotient (Mq) Fol...mentioning

confidence: 99%

Impact of Land-Use Changes on Soil Properties and Carbon Pools in India: A Meta-analysis

Padbhushan

Kumar

Rana

et al. 2022

Front. Environ. Sci.

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Land-use changes (LUC), primarily due to deforestation and soil disturbance, are one of the major causes of soil quality degradation and greenhouse gas emissions. Effects of LUC on soil physicochemical properties and changes in soil quality and land use management strategies that can effectively restore soil carbon and microbial biomass levels have been reported from all over the world, but the impact analysis of such practices in the Indian context is limited. In this study, over 1,786 paired datasets (for meta-analysis) on land uses (LUs) were collected from Indian literature (1990–2019) to determine the magnitude of the influence of LUC on soil carbon, microbial biomass, and other physical and chemical properties at three soil depths. Meta-analysis results showed that grasslands (36.1%) lost the most soil organic carbon (SOC) compared to native forest lands, followed by plantation lands (35.5%), cultivated lands (31.1%), barren lands (27.3%), and horticulture lands (11.5%). Our findings also revealed that, when compared to forest land, the microbial quotient was lower in other LUs. Due to the depletion of SOC stock, carbon dioxide equivalent (CO2 eq) emissions were significantly higher in all LUs than in forest land. Results also showed that due to the conversion of forest land to cultivated land, total carbon, labile carbon, non-labile carbon, microbial biomass carbon, and SOC stocks were lost by 21%, 25%, 32%, 26%, and 41.2%, respectively. Changes in soil carbon pools and properties were more pronounced in surface (0–15 cm) soils than in subsurface soils (15–30 cm and 30–45 cm). Restoration of the SOC stocks from different LUs ranged from a minimum of 2% (grasslands) to a maximum of 48% (plantation lands). Overall, this study showed that soil carbon pools decreased as LUC transitioned from native forestland to other LUs, and it is suggested that adopting crop-production systems that can reduce CO2 emissions from the intensive LUs such as the ones evaluated here could contribute to improvements in soil quality and mitigation of climate change impacts, particularly under Indian agro-climatic conditions.

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Section: Changes In Soil Carbon Pools and Microbial Quotient (Mq) Fol...mentioning

confidence: 99%

Impact of Land-Use Changes on Soil Properties and Carbon Pools in India: A Meta-analysis

Padbhushan

Kumar

Rana

et al. 2022

Front. Environ. Sci.

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“…Overall, because tropical soils are deeply weathered, resource-related controls associated with organic matter abundance and quality drove patterns of MBCSoil, and at a lower extent C and P limitation, while soil geochemistry and substrate quality controlled MBCSOC. Hence, control of soil parent material geochemistry on MBCSoil could be more indirect rather than direct, through its effects on resource availability, reflected here by MBCSOC (Insam and Domsch, 1988;Mendoza et al, 2020).…”

Section: Microbial Biomass Carbon and Phosphorus Limitations Were Comentioning

confidence: 99%

Patterns of microbial processes shaped by parent material and soil depth in tropical rainforest soils

Kidinda

Olagoke

Vogel

et al. 2020

Preprint

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Abstract. Microbial processes are one of the key factors driving carbon (C) and nutrient cycling in terrestrial ecosystems, and are strongly driven by the equilibrium between resource availability and demand. In deeply weathered tropical rainforest soils of Africa, it remains unclear whether patterns of microbial processes differ between soils developed from geochemically contrasting parent materials. Here we show that resource availability across soil depths and regions from mafic to felsic geochemistry shape patterns of soil microbial processes. During a 120-day incubation experiment, we found that microbial biomass C and extracellular enzyme activity were highest in the mafic region. Microbial C limitation was highest in the mixed sedimentary region and lowest in the felsic region, which we propose is related to the strength of contrasting C stabilization mechanisms and varying C quality. None of the investigated regions and soil depths showed signs of nitrogen (N) limitation for microbial processes. Microbial phosphorus (P) limitation increased with soil depth but was similar across geochemical regions, indicating that subsoils in the investigated soils were depleted in rock-derived nutrients and are therefore dependent on efficient biological recycling of nutrients. Microbial C limitation was lowest in subsoils, indicating that subsoil microbes can significantly participate in C cycling and limit C storage if increased oxygen availability is prevalent. Using multivariable regressions, we demonstrate that microbial biomass C normalized to soil organic C content (MBCSOC) is controlled by soil geochemistry and substrate quality, while microbial biomass C normalized to soil weight (MBCSoil) is predominantly driven by resource distribution. We conclude that due to differences in resource availability, microbial processes in deeply weathered tropical rainforest soils greatly vary across geochemical regions which must be considered when assessing soil microbial processes in organic matter turnover models.

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“…Finalmente, la integración para la producción y la gestión industrial de las tecnologías comprende el manejo integral de los espacios de suelos que permitan la fabricación de biocombustibles con equilibrio en la producción de alimentos (Vásconez et al, 2021) en escenarios económicos y ambientales positivos (Mendoza et al, 2020), junto con acciones de responsabilidad social empresarial que promuevan el desarrollo sostenible de la organización y sus cadenas de suministros (Cogollo y Ruiz, 2019). Por lo cual, el objetivo principal de esta investigación es proporcionar información actualizada sobre el desarrollo de la innovación biotecnológica de los procesos de producción 1G y 2G de bioetanol desde un contexto gerencial.…”

Section: Introductionunclassified

Biotecnología y gerencia aplicada en la producción de bioetanol 1G y 2G

2022

RCS

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The production of first-generation and second-generation bioethanol in the current and global context offers a sustainable alternative to the environment compared to fossil fuels. Business-industrial management has been consolidated in establishing the parameterization of control indicators and the estimation of the economic factors that participate in the selection of technologically efficient methods to produce biofuels. The main objective is to provide information on the biotechnological innovation of the first generation and second-generation production methodologies of bioethanol in the managerial context. The methodology is considered a validated design for systemic literature review, the level of research is exploratory and descriptive. Up-to-date publications belonging to various databases, such as Scopus and WoS, were considered up to the year 2022. The results show a scenario defined by advances in the domain of biotechnology to produce first and second-generation bioethanol, in an organizational context. It is concluded that industrial management for the production of biofuels is limited by decision-making based on economic investment and the tendency to adopt alternative processes that allow the production of biofuels from lignocellulosic material on food raw materials.

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Differences in the ratio of soil microbial biomass carbon (MBC) and soil organic carbon (SOC) at various altitudes of Hyperalic Alisol in the Amazon region of Ecuador

Cited by 13 publications

References 33 publications

Impact of Land-Use Changes on Soil Properties and Carbon Pools in India: A Meta-analysis

Impact of Land-Use Changes on Soil Properties and Carbon Pools in India: A Meta-analysis

Patterns of microbial processes shaped by parent material and soil depth in tropical rainforest soils

Biotecnología y gerencia aplicada en la producción de bioetanol 1G y 2G

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