Cinética de liberação de CO2 e decomposição da fitomassa em sistemas de uso e manejo do solo

Gomes, Daniel da Silva; Barbosa, Alex da Silva; Santos, Teófilo de Medeiros; Santos, Sabrina Kelly dos; Silva, João Henrique Constantino Sales; Aquino, Italo de Souza

doi:10.33448/rsd-v10i1.11413

Cited by 6 publications

(5 citation statements)

References 15 publications

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“…It was also observed that soil moisture in the FO was 8.35%, a higher value than in the other areas studied. As such, Gomes et al (2021) found that as this is a system in which the tree and shrub extract is denser, it has a unique microclimate with mild temperatures, thus presenting a low-temperature range throughout the day.…”

Section: Resultsmentioning

confidence: 99%

“…Recent research (Mátyás et al, 2020;Gomes et al, 2021;Leal et al, 2020;Silva et al, 2020) has shown that different cropping systems have affected soil respiration and biological activity. Although soil processes play a key role in carbon fluxes, there are still few studies in the Agreste Mesoregion of Paraíba, in particular the Brejo Microregion, on the dynamics of respiration and leaf decomposition and knowing that this information is of great relevance, it is pertinent to make these evaluations (López-Teloxa and Monterroso-Rivas, 2020;Silva, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Carbon Dioxide Efflux in Different Land Use Typologies

Lira Vital,

Barbosa,

Gomes

et al. 2023

Rev. Agric. Neotrop.

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Management systems are crucial for soils functioning as a drain or source of greenhouse gas emissions. In this sense, among the alternatives for reducing the precursors of the greenhouse effect are integrated agricultural production systems, particularly Agroforestry Systems. These integrated systems maximize the use of biological cycles, soil, and animal waste, reducing agrochemicals and improving the condition of the rural populations involved. The present study aimed to evaluate the CO2 efflux in different land use types. The study was conducted in four agroecosystems: Forest (FO), Agroforestry Systems (AFS), Mandala (MD), and Degraded area (DA). To quantify the CO2 emanating from the soil, 10 mL of 0.5 N KOH aqueous solution is used and titrated using 0.1 N HCl, phenolphthalein, and 1% methyl orange as an indicator. The CO2 concentration from 5:00 am to 5:00 pm was lower. The lowest CO2 production occurred in FO (82.7 CO2 mg m-2 h-1), statistically differing from the other areas that obtained a CO2 rate higher than 140 mg m-2 h-1. As for kinetics, it was observed in all areas that the greatest release of CO2 during the day occurred at 7:00 am, and this release decreased as the soil temperature increased. The greatest release of CO2 and the highest temperatures occurred in DA, showing that these systems with anthropic modifications can be considered CO2 emitters however, systems closer to the natural ecosystem, such as the AFS, will store carbon in the soil, functioning as a carbon store. Therefore, to reduce CO2 emissions from agricultural activities, it is necessary to use systems that imitate natural ecosystems.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of Carbon Dioxide Efflux in Different Land Use Typologies

Lira Vital,

Barbosa,

Gomes

et al. 2023

Rev. Agric. Neotrop.

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“…De acordo com Gomes et al (2021a;2021b), a dinâmica de decomposição e o efluxo de CO2 do solo são fortemente influenciados pelas formas de uso da terra e pelos fatores climáticos, a exemplo da precipitação e a temperatura da superfície. Quanto mais carbono houver estocado no solo na forma de matéria orgânica, mais vida haverá no solo, maior será retenção de umidade e mais nutrientes estarão disponíveis para as plantas.…”

Section: Discussionunclassified

Indicadores Qualitativos Do Ambiente Edáfico E Serviços Ecossistêmicos Em Diferentes Sistemas De Ocupação Da Terra

Silva

Barbosa

Araújo

et al. 2021

NAT

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O conceito de sustentabilidade tem levado a pesquisa agropecuária a uma crescente busca de modelos alternativos e sustentáveis para a agricultura, sendo as formas de uso e manejo do solo o ponto de partida determinante para a compreensão da dinâmica do ambiente edáfico e serviços ambientais dos agroecossistemas. Sendo assim, este trabalho teve como objetivo avaliar a qualidade do ambiente edáfico e serviços ecossitêmicos em diferentes sistemas de ocupação da terra, através de indicadores ambientais qualitativos. Foram selecionados indicadores sustentáveis de diagnóstico participativo para avaliar quatro sistemas de ocupação da terra: pastagem, mandala agrícola, sistema agroflorestal (SAF) e mata nativa. O conjunto de dados dos indicadores do solo foi analisado por meio de uma Análise dos Componentes Principais (ACP). O sistema agroflorestal apresenta semelhanças na qualidade do ambiente edáfico e serviços ecossistêmicos quando comparado à área de mata nativa. Recomenda-se que práticas de manejo de conservação do solo sejam adotadas nos sistemas com maior intervenção antrópica, a exemplo da pastagem e mandala agrícola. Palavras-chave: indicadores ambientais; qualidade do solo; manejo; agroecossistemas. Qualitative indicators of the edaphic environment and ecosystem services in different land occupation systems ABSTRACT: The concept of sustainability has led agricultural research to a growing search for alternative and sustainable models for agriculture, with the forms of land use and management being the determining starting point for understanding the dynamics of the edaphic environment and environmental services of agroecosystems. Therefore, this work aimed to evaluate the quality of the edaphic environment and ecosystem services in different land occupation systems, through qualitative environmental indicators. Sustainable indicators of participatory diagnosis were selected to assess four land occupation systems: pasture, agricultural mandala, agroforestry system and native forest. The data set of the soil indicators was analyzed using a Principal Component Analysis (PCA). The agroforestry system has similarities in the quality of the edaphic environment and ecosystem services when compared to the native forest area. It is recommended that soil conservation management practices be adopted in systems with greater anthropic intervention, such as pasture and agricultural mandala. Keywords: environmental indicators; soil quality; management; agroecosystems.

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“…The maintenance of the quality of agricultural soils can be changed based on its management (Sousa et al, 2018), and it affects biodiversity and microbial activity, causing alterations in the release of CO2 where it increases when there is an increase in organic material or vegetation suppression. Monitoring of edaphic respiration can be used to identify more impactful changes to environments and be helpful to the development of conservation practices (D'Andrea et al, 2010;Gomes et al, 2021a). This information can contribute to the development of practices aimed at ensuring more sustainable land use (Formiga et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Edaphic breath in soil use and management systems

Gomes

Santos

Barbosa³

et al. 2022

J. Env. Anal. Progr.

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In Brazil, soil use and occupation is largely responsible for greenhouse gas emissions, and one of the ways to monitor disturbances to ecosystems is through edaphic breathing, result of root breathing and the activity of microorganisms present in the soil. Given the above, the objective was to evaluate the microbial activity of the soil through edaphic respiration in four soil use systems. The research was carried out in four soil use systems: forest remnant area (F); agroforestry system (AFS); mandala (M) and pasture (P), belonging to the Universidade Federal da Paraíba (UFPB), Campus III, located in the municipality of Bananeiras - PB. Three samples composed of soil were collected at a depth of 0-20 cm, in each system of use, for chemical and physical analysis in order to characterize the study areas. To quantify carbon dioxide, the methodology described by Grisi was used and the CO2 captures occurred at night and during the day, for 8 months. A completely randomized design was used in a 4 x 2 factorial scheme. The lower temperatures during the night favored a higher CO2 emission; the pasture system and the AFS showed higher CO2 release in the two evaluation shifts, the forest remnant area showed less release of carbon dioxide. The microbial activity of the soil is more efficient at night; and the pasture area has higher CO2 emissions due to the lack of vegetation cover.

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Cinética de liberação de CO2 e decomposição da fitomassa em sistemas de uso e manejo do solo

Cited by 6 publications

References 15 publications

Comparison of Carbon Dioxide Efflux in Different Land Use Typologies

Comparison of Carbon Dioxide Efflux in Different Land Use Typologies

Indicadores Qualitativos Do Ambiente Edáfico E Serviços Ecossistêmicos Em Diferentes Sistemas De Ocupação Da Terra

Edaphic breath in soil use and management systems

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