Variação temporal do efluxo de CO2do solo em sistemas agroflorestais com palma de óleo na Amazônia Oriental

Silva, C. M. da; Vasconcelos, S. S.; Mourão, Moisés; Bispo, Carlos José Capela; Kato, O. R.; Junior, A. C. da Silva; Castellani, Daniele

doi:10.1590/1809-4392201500193

Cited by 17 publications

(16 citation statements)

References 27 publications

(27 reference statements)

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“…The rainiest season caused a rise in C SMB in all planting areas (Table 2). Aragão et al (2012) and Silva et al (2016) also found increases in C content in biomass during the rainiest season. This may be associated with an increase in nutrient availability with increasing precipitation as well as a decrease in aluminum saturation.…”

Section: Resultsmentioning

confidence: 78%

Seasonal variation of soil attributes in oil palm plantations in the Eastern Amazon

Silva¹,

Ruivo²,

Silva³

et al. 2018

Agraria

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Brazil stands out worldwide in the production of oil palm; however, there is a need to understand the interaction between the plantations and the environment. The objective was to evaluate the microbiological and chemical attributes of the soil in plantations of different ages of oil palm and of a secondary forest in two seasonal conditions. The microbiological variables analyzed were the carbon of the microbial biomass (C BMS), total carbon (C TOTAL), total nitrogen (N TOTAL), basal respiration (RB), metabolic quotient (qCO 2), carbon / nitrogen ratio (C/N) and gravimetric humidity (Ug); (P), potassium (K), calcium (Ca), magnesium (Mg), aluminum (Al), effective cation exchange capacity (CTC) and aluminum saturation (% m). The chemical attributes of soil fertility and soil microbial biomass presented stronger and larger correlations in the rainy season. The most sensitive microbiological attributes to age of oil palm were C BMS , qCO 2 and C/N ratio, while the chemical variables were P, Ca, Al, CTC, and pH in water.

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Section: Resultsmentioning

confidence: 78%

Seasonal variation of soil attributes in oil palm plantations in the Eastern Amazon

Silva¹,

Ruivo²,

Silva³

et al. 2018

Agraria

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“…It is known that, due to its extraordinary carbon retention capacity and greater CO 2 flow in the soil in agroforestry systems, oil palm lays basis for the implementation of a clean development mechanism capable of improving environmental quality (Dias et al, 2010;Pezarico et al, 2013;Silva et al, 2016). However, prior to planting, it must be mainly assessed whether rainfall is enough to ensure the productivity of planted areas.…”

Section: Resultsmentioning

confidence: 99%

Expansion of palm oil (Elaeis guineensis Jacq.) in the state of Maranhão and soil water deficit limitations in the Brazilian Amazon

Martorano¹,

Moraes²,

Lisboa³

et al. 2017

Aust J Crop Sci

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Oil palm is considered the crop with the highest oil production per planted area unit. This condition has driven the Brazilian government to create the Sustainable Oil Palm Production Program. Since 2009, the agroenergy production chain has used oil palm as a viable and profitable crop to recover deforested areas in the Amazon. The aim of this study was to assess hydric conditions able to indicate the potential to expand oil palm crops in the state of Maranhão, even in the Legal Amazon. The climate database used (average and extreme temperature in degrees Celsius; rainfall values; relative humidity, and vapour-pressure deficit). Water deficit values were was obtained by comparing the potential evapotranspiration of oil palm (ETc) to actual rainfall (ER). Water balance was calculated based on available water capacity of 125 mm.month -1 . Evapotranspiration was obtained using the methodology according to the climate database available to calculate the evapotranspiration rate in an area planted with oil palm in this study. The water deficit values show no restriction in the soil water replacement between January and June. However, from July to December, the water deficit varies between 200 and 300 mm. The levels showed that, in the areas evaluated, oil palm crops will require irrigation. In this period, yield was estimated at 17 tons ha -1 when the water deficit was considered at 210 mm and 14 tons ha -1 for a deficit of 380 mm. This result reinforces that oil palm production may drop by more than 50% due to water deficits and the crop will greatly impact the economy and the environment if the irrigation strategy is adopted in the areas of Maranhão.

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“…O FCO 2 é resultado da atividade microbiana e respiração das raízes, todavia, por adição dos fatores ambientais temperatura e umidade, pode haver aumento ou diminuição das emissões devido a variabilidade temporal, conforme destacam Silva et al (2016). Verifica-se também que a Tsolo apresentou valores médios idênticos estatisticamente nas duas áreas estudadas, variando 26,14 ºC para área de cacau, e 27,83ºC para área de café.…”

Section: Resultsunclassified

Distribuição espacial do efluxo de CO2 em área de terra preta arqueológica sob cultivo de cacau e café no município de Apuí, AM, Brasil

Campos¹,

Alho

Silva³

et al. 2016

Rev. ambiente água

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As Terras Pretas Arqueológicas (TPA) são solos que podem concentrar até seis vezes mais carbono orgânico que solos adjacentes sem horizonte A antrópico, presumindo-se, dessa forma, maior efluxo de CO2 nesses solos. O objetivo deste estudo foi investigar a distribuição espacial do efluxo de CO2, temperatura e umidade do solo em área de Terra Preta Arqueológica sob cultivo de cacau e café no município de Apuí, AM, Brasil. Foram construídas malhas amostrais nas dimensões 42 x 80 m, com espaço entre os pontos de 8 x 10 m e 6 x 10 m para as áreas de cacau e café, respectivamente. Após a etapa de coleta dos dados do efluxo de CO2, temperatura e umidade do solo, procedeu-se a análise estatística descritiva e geoestatística. Os resultados mostraram que os parâmetros avaliados apresentam dependência espacial, com alcance variando de 25 a 40 m para o efluxo de CO2 da área TPA com cacau. O efluxo de CO2 na área de cacau foi superior, com valor médio de 5,49 µmol m 2 s-1, comparado ao 3,99 µmol m-2 s-1 de CO2 da área com café.

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Variação temporal do efluxo de CO2do solo em sistemas agroflorestais com palma de óleo na Amazônia Oriental

Cited by 17 publications

References 27 publications

Seasonal variation of soil attributes in oil palm plantations in the Eastern Amazon

Seasonal variation of soil attributes in oil palm plantations in the Eastern Amazon

Expansion of palm oil (Elaeis guineensis Jacq.) in the state of Maranhão and soil water deficit limitations in the Brazilian Amazon

Distribuição espacial do efluxo de CO2 em área de terra preta arqueológica sob cultivo de cacau e café no município de Apuí, AM, Brasil

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