Organic Residues Decomposition
Mostrando 13-24 de 34 artigos, teses e dissertações.
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13. Decomposição de resíduos da colheita e transferência de carbono para o solo em plantações de eucalipto / Harvest residue decomposition and carbon transference to the soil in eucalypt plantations
In Brazil, eucalyptus is planted in regions with different climate and soil conditions, which affect harvest residue decomposition and the rate of carbon transference fromresidues (Cres) to the soil, hence influencing soil organic matter (SOM) content. SOM is considered one of the most important indicators of soil quality and forest production sustainability
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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14. Estoques de carbono e nitrogênio do solo após 17 anos sob preparo convencional e plantio direto em dois sistemas de rotação de culturas em Cruz Alta, RS.
Descrição e caracterização da área experimental. Amostragem e preparo das amostras de solo. Cálculos do estoque de carbono e nitrogênio no perfil do solo sob os tratamentos. Estimativa da proporção de carbono do solo derivado da vegetação nativa original. Análise estatística. Fertilidade e densidade do solo na área sob vegetação nativa e sob
Seropédica: Embrapa Agrobiologia. Publicado em: 2011
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15. Influência de fatores climáticos na decomposição de resíduos culturais de aveia e trigo.
Os efeitos de fatores climáticos sobre a dinâmica da decomposição de resíduos culturais, apesar de importantes para a compreensão de processos como a formação da matéria orgânica, são pouco conhecidos e estudados, sendo raros os estudos, principalmente os de longa duração. O objetivo deste trabalho foi avaliar os impactos das temperaturas máxim
Londrina: Embrapa Soja. Publicado em: 2010
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16. EMISSION OF NITROUS OXIDE AND CARBON DIOXIDE AFTER APPLICATION OF PIG SLURRY AND CATTLE DEJECTIONS IN AN HAPLUDALF / EMISSÃO DE ÓXIDO NITROSO E DIÓXIDO DE CARBONO APÓS APLICAÇÃO DE DEJETOS DE SUÍNOS E BOVINOS EM UM ARGISSOLO
Emission of greenhouse effect gases due to the agricultural use of the dejections of animals as fertilizers, as well as the mineralization of the carbon of those materials in the soil healthy aspects are still relatively a little studied in Brazil. This work was accomplished to evaluate: 1) the annual emission of nitrous oxide with the use, in the corn, of m
Publicado em: 2009
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17. AvaliaÃÃo do processo de bioestabilizaÃÃo de resÃduos sÃlidos urbanos em LisÃmetro de campo
The solid wastes, formed at the most part of it by organic materials, bear biological degradation associated by others physical and chemical processes. These residues, deposited in landfill, are treated through anaerobic degradation; which engender, as a final result of the decomposition, leaching and bio-gas. However, these sub products can be studied and t
Publicado em: 2009
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18. NITROUS OXIDE EMISSION AND CARBON MINERALIZATION OF COVER CROPS AND PIG AND DAIRY CATTLE SLURRIES IN NOTILLAGE OF CASTOR BEAN / EMISSÃO DE ÓXIDO NITROSO E MINERALIZAÇÃO DO CARBONO DE PLANTAS DE COBERTURA E DE DEJETOS DE SUÍNOS E BOVINOS EM PLANTIO DIRETO DE MAMONA
The increase in the availability of nutrients to soil microorganisms, especially carbon (C) and nitrogen (N), through crop residues and animal slurries can increase dioxide carbon (CO2) and nitrous oxide (N2O) emissions to the atmosphere. In order, to evaluate this hypothesis, two studies in field conditions were conducted in a typic Hapludalf at experimenta
Publicado em: 2009
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19. Viabilidade do aproveitamento do lixo urbano da cidade de Maceió como alternativa energética. / Viability of the exploitation of the urban garbage of the energy city of Maceió as alternative
Due to the consolidation of the capitalist model, technological progress and consequently the excessive consumption of disposable products, has become the great volume of solid waste generated by society, thus creating serious environmental and public health. Beside this problem, the sharp rise in the price of fossil fuels and the possibility of depletion ma
Publicado em: 2009
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20. FLUXO DE GASES DE EFEITO ESTUFA EM SISTEMAS DE PREPARO DO SOLO E ROTAÇÃO DE CULTURAS NO PLANALTO DO RIO GRANDE DO SUL / GREENHOUSE GASES FLUX IN SYSTEMS OF SOIL TILLAGE AND CROP ROTATION IN THE PLANALTO REGION OF RIO GRANDE DO SUL
The main greenhouse gases (GHG) are the nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2), whose atmosphere concentrations increased in an unprecedented rate since the Industrial Revolution. This work aim evaluates the GEE emissions of spring/summer season in different soil management systems located in the Planalto region of Rio Grande do Sul Stat
Publicado em: 2009
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21. Transferência do carbono de resíduos da colheita de eucalipto para frações da matéria orgânica do solo / Carbon transference from eucalypt harvest residues to soil organic matter fractions
Eucalypt plantation areas in Brazil have increased continuously over the years. The practice of removing more lignified material, such as bark and branches, from the ground after wood harvesting in eucalypt forests may prevent the stabilization of carbon (C) in recalcitrant fractions of soil organic matter (SOM). The recalcitrance of such organic fractions i
Publicado em: 2008
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22. Fractions of organic matter and decomposition of eucalypt harvest residues in Coastal Plain soils of Bahia, Brazil / Frações da matéria orgânica e decomposição de resíduos da colheita de eucalipto em solos de Tabuleiros Costeiros da Bahia
Eucalypt is the most planted tree in Brazil and to maintain a sustainable forest production it is fundamental do understand the processes of litter decomposition and the impact of eucalypt cultivation on soil organic matter (SOM) fractions. The conversion of planted pastures in eucalypt plantations alters the labile and humified pools of SOM, but little is k
Publicado em: 2008
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23. PreparaÃÃo de carvÃo ativado e impregnaÃÃo com ferro ou cromo para aplicaÃÃes em processos de descontaminaÃÃo ambiental. / Preparation and impregnation of activated carbons with iron or chromium for aplication on environmental descontamination processes.
This work has five chapters, with objective of the preparation of activated carbons (AC) from agroindustrial residues (coffee hulls and wet blue leather) and preparation of catalysts using these AC for degradation of organic compounds. In the first chapter is showed a review from the literature about AC, the surface characterisitics and properties, the uses
Publicado em: 2008
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24. Remoção de nitrogênio de lixiviado de aterros de resíduos sólidos urbanos empregando sistema de lodos ativados, composto por reator anóxico e aeróbio em série
The disposition of solid residues in landfills, when projected, built and operated according to the technical norms it is a safe method of disposition. However it happens the generation of having leachate, that is the liquid that results together of the decomposition of the solid residues with the water that reaches the layer of residues. In leachate they ar
Publicado em: 2008