|
|
|
| Registros recuperados: 11 | |
|
|
| CONCEIÇÃO, M. C. G. da; MATOS, E. da S.; BIDONE, E. D.; RODRIGUES, R. de A. R.; CORDEIRO, R. C.. |
| Several studies indicate that the use of integrated production systems, such as integrated crop-livestock-forest systems (ICLF), improves the quality of the soil and consequently the sequestration of organic carbon in the soil. In this way, this work aims to evaluate the carbon stocks in soil under different management systems in the Cerrado/Amazonia transition zone, namely: ICLF, no-tillage, pasture and eucalyptus plantation. For this, two soil samplings were done in 2011 and 2014, in the 0 - 5, 5 - 10 and 10 - 30 cm layers. Soil carbon and nitrogen stocks were analyzed. ICLF system was the treatment that obtained the highest percentage of carbon gain (7.8%) after three years of establishment which represents to an increase of 5.5 Mg·ha-1. Management... |
| Tipo: Artigo de periódico |
Palavras-chave: Carbono do solo; Integração lavoura-pecuária-floresta; Gestão do solo; ILPF; Integrated Crop-Livestock-Forest System.; Carbon stocks; Agricultura; Soil management.; Carbon sinks; Agriculture. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078539 |
| |
|
| |
|
| |
|
|
| MARTINS, S. C.; ASSAD, E. D.; PAVÃO, E.; LOPES-ASSAD, M. L. R. C.. |
| The Sectoral Plan of Mitigation and Adaptation to Climate Change, drafted in order to consolidate an Economy of Low Carbon Emission in Agriculture (ABC Plan), integrates the commitments made by Brazil to mitigate its emissions of greenhouse gases (GHG). The objective of this study is to estimate GHG emissions produced by the agriculture and livestock sector considering the adoption of three low carbon emission technologies (LCT) ? pasture recovery, integrated crop-livestock systems (ICLS), and integrated crop-livestock-forest systems (ICLFS). The GHG emissions were estimated considering the growth projections of the production of soybean, corn, rice, beans, cotton, wheat, sugarcane and pastures from 2012 to 2023. Two scenarios were considered: I - without... |
| Tipo: Artigo de periódico |
Palavras-chave: Emissões de gases de efeito estufa; Mudanças climáticas; Mitigação; Carbono do solo; Plano ABC; Soil carbon; Mitigation; Climate change; Greenhouse gases. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1100241 |
| |
|
|
| GAVA, C. A. T.; GIONGO, V.; SIGNOR, D.; FERNANDES JUNIOR, P. I.. |
| Land- use change (LUC) can impact soil quality. In semi- arid areas of Brazil, impacts of LUC need to be understood for better soil management. This study evaluated the impact of LUC on soil organic carbon (SOC), nitrogen (N), and phosphorus (P) dis-tributions through the soil profile and stocks of a Haplic- Cambisol in the Brazilian Semi- arid region. Three land- use systems (LUS) were investigated: agricultural man-agement (30years), regeneration under controlled grazing (25years) after 5years arable management, and native dry forest. Soil contents of P, total C, total N, and N fractions were used to calculate stocks and their stoichiometric ratios for layers 0– 5, 5– 10, 10– 20, and 20– 40cm. Data from... |
| Tipo: Artigo de periódico |
Palavras-chave: Carbono do solo; Nitrogênio do solo; Fósforo do solo; Cambissolo Haplic; Semiárido; Uso da Terra; Solo; Fósforo; Fixação de Fósforo; Dióxido de Carbono; Nitrogênio; Fixação de Nitrogênio; Soil; Land use planning; Land use. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1131020 |
| |
|
| |
|
|
| Andrade,Cristiano Alberto de; Bibar,Maria Paula Silveira; Coscione,Aline Reneé; Pires,Adriana Marlene Moreno; Soares,Álvaro Guedes. |
| O objetivo deste trabalho foi caracterizar o processo de mineralização do C em amostras de cama de frango e de seu respectivo biocarvão, além de determinar a capacidade de troca catiônica (CTC) e as taxas de mineralização do C nos solos tratados com cama de frango e biocarvão. A mineralização do C foi avaliada em experimento com quantificação do C-CO2 liberado a partir de incubação (64 dias) de misturas de solo com cama de frango e de solo com biocarvão, em doses equivalentes a 0, 1.000, 2.000, 4.000 e 8.000 mg kg-1 de C. Ao final da incubação, determinaram-se, nas amostras de solo, o teor de C, o pH e a CTC. A mineralização do C dos materiais obedeceu à cinética química de primeira ordem. Os fluxos de C-CO2 foram mais intensos dos 20 aos 40 dias de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochar; Carbono do solo; Mineralização do carbono; PH do solo; Sequestro de carbono; Taxa de mineralização.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000500407 |
| |
|
|
| QUIJAS, S.; BOIT, B.; THONICKE, K.; MURRAY-TORTAROLO, G.; MWAMPAMBA, T.; SKUTSCH, M.; SIMÕES, M.; ASCARRUNZ, N.; PEÑA-CLAROS, M.; JONES, L.; ARETS, E.; JARAMILLO, V. J.; LAZOS, E.; TOLEDO, M.; MARTORANO, L. G.; FERRAZ, R. P. D.; BALVANERA, P.. |
| Ecosystem service (ES) models can only inform policy design adequately if they incorporate ecological processes. We used the Lund-Potsdam-Jena managed Land (LPJmL) model, to address following questions for Mexico, Bolivia and Brazilian Amazon: (i) How different are C stocks and C sequestration quantifications under standard (when soil and litter C and heterotrophic respiration are not considered) and comprehensive (including all C stock and heterotrophic respiration) approach? and (ii) How does the valuation of C stock and C sequestration differ in national payments for ES and global C funds or markets when comparing both approach? We found that up to 65% of C stocks have not been taken into account by neglecting to include C stored in soil and litter,... |
| Tipo: Artigo de periódico |
Palavras-chave: Carbono do solo; Respiração heterotrófica; Pagamento por serviços ecossistêmicos; Mercados globais de carbono; Modelo dinâmico de vegetação global; Tomadores de decisão. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1100223 |
| |
|
|
| Gonçalves,C. N.; Ceretta,C. A.. |
| Em condições naturais, o solo encontra-se num estado estável no ambiente, mas o manejo inadequado causa degradação, principalmente da fração orgânica, comprometendo a sustentabilidade de sistemas agrícolas. Este estudo baseou-se num experimento que vem sendo realizado há seis anos em um Podzólico Vermelho-Amarelo (Hapludalf), localizado em área experimental do Departamento de Solos/UFSM, e teve como objetivo avaliar o efeito de sucessões de cultura sobre a dinâmica do carbono. Utilizaram-se as sucessões de cultura ervilhaca comum (vicia sativa)/milho, tremoço azul (Lupinus angustifolius)/milho, ervilha forrageira (Pisum arvense)/milho, aveia preta (Avena strigosa )/milho e pousio invernal/milho, associadas a duas doses de N aplicado no milho (0 e 80 kg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cobertura de inverno; Milho; Carbono do solo; Adição de matéria orgânica. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06831999000200015 |
| |
|
|
| MATOS, E. da S.; CONCEIÇÃO, M. C. G. da; BIDONE, E. G.; RODRIGUES, R. de A. R.; CORDEIRO, R. C.. |
| Integrated crop-livestock-forest (ICLF) systems has been considered as an important strategy to enhance C sequestration. However, changes in soil C due to agricultural management practices, in general, are observed in long-term experiments. Our objective was to investigate short-term impacts on soil organic matter under different management systems in the Cerrado/Amazonia region. Treatments corresponded to ICLF, No-tillage, Pasture and Eucalyptus plantation. Soil was sampled in 2014, in the 0-5, 5-10 and 10-30 cm layers for quantification of light- and heavy-fraction C stocks as well as their C isotopic composition (DELTA 13C). After three years established, all evaluated treatments showed similar values of light- and heavy-fraction C stocks to those... |
| Tipo: Parte de livro |
Palavras-chave: Agricultura conservacionista; Integração lavoura-pecuária-floresta; Carbono do solo. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085351 |
| |
|
|
| MATOS, E. da S.; CONCEIÇÃO, M. C. G. da; BIDONE, E. G.; RODRIGUES, R. de A. R.; CORDEIRO, R. C.. |
| Integrated crop-livestock-forest (ICLF) systems has been considered as an important strategy to enhance C sequestration. However, changes in soil C due to agricultural management practices, in general, are observed in long-term experiments. Our objective was to investigate short-term impacts on soil organic matter under different management systems in the Cerrado/Amazonia region. Treatments corresponded to ICLF, No-tillage, Pasture and Eucalyptus plantation. Soil was sampled in 2014, in the 0-5, 5-10 and 10-30 cm layers for quantification of light- and heavy-fraction C stocks as well as their C isotopic composition (DELTA 13C). After three years established, all evaluated treatments showed similar values of light- and heavy-fraction C stocks to those... |
| Tipo: Parte de livro |
Palavras-chave: Agricultura conservacionista; Integração lavoura-pecuária-floresta; Carbono do solo; Integrated crop-livestock-forest; Light-fraction; Heavy-fraction; Agricultural conservation practice; Carbon sequestration. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1086559 |
| |
| Registros recuperados: 11 | |
|
|
|
