Carbon storage in soil and aggregates of Inceptisols under different land use management systems in southern Amazonas

Campos, Milton César Costa; Soares, Marcelo Dayron Rodrigues; Nascimento, Mailson Ferreira; Silva, Douglas Marcelo Pinheiro

doi:10.4136/ambi-agua.1819

Cited by 8 publications

(5 citation statements)

References 21 publications

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“…In addition, Silva et al (2004) argue that intensive grazing results in degradation of OC; added to this, we have the low input of OM by the grass. In turn, Campos et al (2016) studying carbon stock and aggregates in a Cambisol under different managements in southern Amazonas, found OC content (16.13 g kg -1 ) higher than that found in the present study. The study by Campos et al (2016) allows us to conclude that the increment of OC in grassland system depends on the grass species and the grazing system adopted.…”

Section: Cultivationcontrasting

confidence: 92%

Multivariate analysis in the evaluation of soil attributes in areas under different uses in the region of Humaitá, AM

et al. 2019

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The recognition of the influence of management practices on soil physical and chemical conditions is substantial for sustainable agriculture. For this reason, this study was developed for the purpose of evaluating the behavior of soil attributes under different uses in the region of Humaitá, AM, using multivariate statistical methods. The study was developed in 8 rural properties producing bananas, grassland, maize, coffee, cassava, vegetables, agroforestry system and a forest fragment. Samples of soils with preserved structure in the 0.0 - 0.10 and 0.10 - 0.20 m layers were randomly collected in 5 small trenches per area, totaling 32 samples in the management systems, to determine the physical and chemical attributes. The data were then submitted to univariate and multivariate statistical analysis. Exploratory data analysis (principal components and dendrogram) and frequency of environmental covariates was efficient in distinguishing production environments, so multivariate classification based on physical and chemical attributes of the soil can help in the proper planning of land use. The analysis of the principal components indicates that the BD presents direct dependence with the SPR, signaling the use of the soil with grassland the only one in the process of compaction. Soil acidity is the main limiting factor for crop development, requiring the adoption of pH corrective practices with improvements in nutrient supply. The conversion of the forest to grassland maintained the structural characteristics of the soil, while the other uses increased improvements in physical quality and soil fertility.

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Section: Cultivationcontrasting

confidence: 92%

Multivariate analysis in the evaluation of soil attributes in areas under different uses in the region of Humaitá, AM

et al. 2019

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“…Besides, in all areas a usual behavior of the carbon contents was observed, with decreasing values in depth. Campos et al (2016), comparing different land uses, including pasture and agroforestry, verified that the highest total carbon content in pasture environment, which according to Araújo et al (2011), is due to the greater accumulation of organic matter due to the greater volume of the grass root system. Based on the carbon contents, the carbon stocks presented in Table 4 were calculated, and no significant differences between the different uses were found.…”

Section: Resultsmentioning

confidence: 88%

Carbon Stocks and Soil Organic Matter Quality Under Different of Land Uses in the Maranhense Amazon

Reis¹,

Signor²,

Muniz³

et al. 2018

JAS

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In the face of the traditional model of succession of native environments in pastures or agricultural areas, followed by superpastejo and the concern with emissions of greenhouse gases in the Brazilian Amazon region, this work aims to determine the influence of different land uses on carbon sequestration and soil organic matter changes in the municipality of Pindaré-Mirim, in state of Maranhão. This study evaluated different uses of the soil: native forest; secondary vegetation (capoeira); degraded pasture and CLFI (Crop-Livestock-Forest Integration) system. The deformed and undisturbed samples were collected at depths: 0.00-0.10, 0.10-0.20, 0.20-0.30, 0.30-0.40, 0.40-0.60, 0.60-0.80 and 0.80-1.00 m. Soil densities were determined by the volumetric ring method, the carbon stocks by the carbon content in the soil evaluating the dry combustion, and the accumulated carbon stocks were calculated in 1.00 m. The physical fractions of the organic matter were determined by means of the granulometric method. At depth 0.0-0.10 m, the soil density in the native forest (1.17 g cm -3 ) was lower than the average of degraded pasture (1.40 g cm -3). There was no difference in the carbon content between all the land uses up to 0.40 m depth. The accumulated carbon stocks up to 1.00 m ranged from 49.52 Mg ha -1 to 64.41 Mg ha -1 and were higher in the native forest compared to capoeira and the ICLF system. In relation to the accumulated carbon stock, the native forest and degraded pasture were the ones that obtained the highest levels, followed by the capoeira and the CLFI system.

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“…Valores similares de EC no tratamento PE quando comparado ao FS, pode ser explicado pela presença das gramíneas no PE que exibem efeito rizosférico intenso por causa do seu alto volume radicular, que por meio da sua decomposição liberam nutrientes e também atua na formação de matéria orgânica do solo, favorecendo assim sua agregação (CAMPOS et al, 2016).…”

Section: Variávelunclassified

“…A matéria orgânica é formada essencialmente por compostos de carbono e possui implicações no comportamento físico do solo, de maneira a exercer grande influência no processo de restabelecimento estrutural. O carbono orgânico está diretamente ligado à qualidade do solo, pois é um agente cimentante da estrutura, atua no tampão do pH, na complexação de elementos e capacidade de troca de cátions, além de aumentar a disponibilidade hídrica no solo (CAMPOS et al, 2016).…”

Section: Introductionunclassified

Carbono Orgânico E Atributos Físicos Do Solo Sob Manejo Agropecuário Sustentável Na Amazônia Legal

et al. 2018

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RESUMOEstudos visando elevar a qualidade dos solos da Amazônia têm crescido na última década em virtude de seu uso inadequado poder limitar a capacidade de sua produção. Na Região Amazônica, pesquisas demonstram que a agropecuária contribui com o aumento de áreas degradadas correlacionadas ao desflorestamento, no entanto, essa prática possui considerável importância na economia. Dessa forma, o objetivo deste trabalho foi avaliar os níveis de densidade, porosidade total, macro e microporosidade, teores de carbono orgânico e quantificar o estoque de carbono nas camadas no perfil do solo em um sistema de ILPF e em sistemas convencionais no município de Paragominas, Pará. Foi utilizado um delineamento inteiramente casualizado, com três repetições, em esquema de parcela subdividida com quatro parcelas (sistemas de manejo do solo) e sete subparcelas (camadas do solo). As parcelas foram compostas por: sistema ILPF-Paricá, lavoura com plantio convencional de milho (PM), pastagem manejada com criação de gado de corte em sistema extensivo (PE) e como testemunha uma floresta secundária (FS). As subparcelas foram as profundidades de amostragem: 0-10, 10-20, 20-30, 30-40, 40-60, 60-80 e 80-100 cm. O sistema de integração ILPF-Paricá, aos cinco anos de cultivo, melhorou as condições físicas de densidade e porosidade do solo, além dos teores e estoques de carbono orgânico nas camadas subsuperficiais. O PM promoveu aumento da densidade do solo e perda de porosidade total e microporosidade em profundidade, mas apresentou teores e estoques de carbono orgânico similar ao sistema de integração Lavoura-Pecuária-Floresta. A pastagem demonstrou teores e estoques de carbono orgânico semelhante à floresta secundária, porém, indicou redução de macroporosidade. Palavras-chave: agrossilvicultura; ILPF; matéria orgânica do solo; qualidade física do solo; sistema conservacionista.

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Carbon storage in soil and aggregates of Inceptisols under different land use management systems in southern Amazonas

Cited by 8 publications

References 21 publications

Multivariate analysis in the evaluation of soil attributes in areas under different uses in the region of Humaitá, AM

Multivariate analysis in the evaluation of soil attributes in areas under different uses in the region of Humaitá, AM

Carbon Stocks and Soil Organic Matter Quality Under Different of Land Uses in the Maranhense Amazon

Carbono Orgânico E Atributos Físicos Do Solo Sob Manejo Agropecuário Sustentável Na Amazônia Legal

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