|
|
Registro Completo |
Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Gado de Corte. |
Data corrente: |
02/03/2017 |
Data da última atualização: |
18/10/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
LOURENTE, E. R. P.; SILVA, E. F. da; MERCANTE, F. M.; SERRA, A. P.; PEIXOTO, P. P. P.; FERREIRA, R. C. F.; ENSINAS, S. C.; NETO NETO, A. L.; ALOVISI, A. M. T.; MARCHETTI, M. E.; CORTEZ, J. W. |
Afiliação: |
ELAINE REIS PINHEIRO LOURENTE, UFGD; EULENE FRANCISCO DA SILVA, UFERSA; FABIO MARTINS MERCANTE, CPAO; ADEMAR PEREIRA SERRA, CNPGC; PAULA PINHEIRO PADAVESE PEIXOTO, UEMS; RODRIGO CESAR FLORES FERREIRA, SPM - E. Petrolina; SIMONE CÂNDIDO ENSINAS, UEMS; ANTONIO LUIZ NETO NETO, UEMS; ALESSANDRA MAYUMI TOKURA ALOVISI, UFGD; MARLENE ESTEVÃO MARCHETTI, UFGD; JORGE WILSON CORTEZ, UFGD. |
Título: |
Agricultural management systems affect on physical, chemical and microbial soil properties. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Australian Journal of Crop Science, v. 10, n. 5, p. 683-692, May 2016. |
Idioma: |
Inglês |
Conteúdo: |
The purpose of this research was to assess the effects of replacement of native ?Cerrado? vegetation (NV) into croplands on soil chemical, physical and microbial properties. This research was carried out on a farm under Rhodic Hapludox soil with different types of agricultural managements systems, and it was used a NV to compare the systems. The experimental design was set up in completely randomized with five treatments and five repetitions. The treatments adopted were several agricultural management systems as follow; NV; CS_Crop system; LS_Livestock system; ICLS-4_Integrated crop-livestock system with four years of implementation; ICLS-8_Integrated crop-livestock system with eight years of implementation. It was assessed some chemical, physical, and microbial parameters in the soil, as soil pH, P content, exchangeable cations, cation exchange capacity, base saturation, cations saturation, soil organic carbon (SOC), soil bulk density (SBD), aggregate stability, microbial biomass carbon (MBC), basal breathing, and microbial quotient. The replacement of NV to ICLS decreased SOC, MBC, soil aggregate stability and increase of SBD. The ICLS improved ?Cerrado? soil fertility over time adoption. This integrated system increased the quantity of exchangeable K+ and P content in ?Cerrado? soil. The ICLS-8 showed soil environment nearby the NV. Even the difficulty in obtaining the same physical and microbial condition of NV, the results of this research point out quite important observations, because just no-till system is not enough to obtain improvement of soil quality and the ICLS can return the soil properties close to native ?Cerrado? vegetation. MenosThe purpose of this research was to assess the effects of replacement of native ?Cerrado? vegetation (NV) into croplands on soil chemical, physical and microbial properties. This research was carried out on a farm under Rhodic Hapludox soil with different types of agricultural managements systems, and it was used a NV to compare the systems. The experimental design was set up in completely randomized with five treatments and five repetitions. The treatments adopted were several agricultural management systems as follow; NV; CS_Crop system; LS_Livestock system; ICLS-4_Integrated crop-livestock system with four years of implementation; ICLS-8_Integrated crop-livestock system with eight years of implementation. It was assessed some chemical, physical, and microbial parameters in the soil, as soil pH, P content, exchangeable cations, cation exchange capacity, base saturation, cations saturation, soil organic carbon (SOC), soil bulk density (SBD), aggregate stability, microbial biomass carbon (MBC), basal breathing, and microbial quotient. The replacement of NV to ICLS decreased SOC, MBC, soil aggregate stability and increase of SBD. The ICLS improved ?Cerrado? soil fertility over time adoption. This integrated system increased the quantity of exchangeable K+ and P content in ?Cerrado? soil. The ICLS-8 showed soil environment nearby the NV. Even the difficulty in obtaining the same physical and microbial condition of NV, the results of this research point out quite important obse... Mostrar Tudo |
Palavras-Chave: |
Integrated crop-livestock sytem. |
Thesaurus Nal: |
Conservation tillage; Soil biology; Soil organic carbon. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/156802/1/Agricultural-management-systems.pdf
|
Marc: |
LEADER 02556naa a2200289 a 4500 001 2077593 005 2017-10-18 008 2016 bl uuuu u00u1 u #d 100 1 $aLOURENTE, E. R. P. 245 $aAgricultural management systems affect on physical, chemical and microbial soil properties.$h[electronic resource] 260 $c2016 520 $aThe purpose of this research was to assess the effects of replacement of native ?Cerrado? vegetation (NV) into croplands on soil chemical, physical and microbial properties. This research was carried out on a farm under Rhodic Hapludox soil with different types of agricultural managements systems, and it was used a NV to compare the systems. The experimental design was set up in completely randomized with five treatments and five repetitions. The treatments adopted were several agricultural management systems as follow; NV; CS_Crop system; LS_Livestock system; ICLS-4_Integrated crop-livestock system with four years of implementation; ICLS-8_Integrated crop-livestock system with eight years of implementation. It was assessed some chemical, physical, and microbial parameters in the soil, as soil pH, P content, exchangeable cations, cation exchange capacity, base saturation, cations saturation, soil organic carbon (SOC), soil bulk density (SBD), aggregate stability, microbial biomass carbon (MBC), basal breathing, and microbial quotient. The replacement of NV to ICLS decreased SOC, MBC, soil aggregate stability and increase of SBD. The ICLS improved ?Cerrado? soil fertility over time adoption. This integrated system increased the quantity of exchangeable K+ and P content in ?Cerrado? soil. The ICLS-8 showed soil environment nearby the NV. Even the difficulty in obtaining the same physical and microbial condition of NV, the results of this research point out quite important observations, because just no-till system is not enough to obtain improvement of soil quality and the ICLS can return the soil properties close to native ?Cerrado? vegetation. 650 $aConservation tillage 650 $aSoil biology 650 $aSoil organic carbon 653 $aIntegrated crop-livestock sytem 700 1 $aSILVA, E. F. da 700 1 $aMERCANTE, F. M. 700 1 $aSERRA, A. P. 700 1 $aPEIXOTO, P. P. P. 700 1 $aFERREIRA, R. C. F. 700 1 $aENSINAS, S. C. 700 1 $aNETO NETO, A. L. 700 1 $aALOVISI, A. M. T. 700 1 $aMARCHETTI, M. E. 700 1 $aCORTEZ, J. W. 773 $tAustralian Journal of Crop Science$gv. 10, n. 5, p. 683-692, May 2016.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Agropecuária Oeste (CPAO) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
24/11/2022 |
Data da última atualização: |
25/11/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
MACIEL, V. G.; NOVAES, R. M. L.; BRANDÃO, M.; CAVALETT, O.; PAZIANOTTO, R. A. A.; GAROFALO, D. F. T.; MATSUURA, M. I. da S. F. |
Afiliação: |
VINÍCIUS GONÇALVES MACIEL; RENAN MILAGRES LAGE NOVAES, CNPMA; MIGUEL BRANDÃO, KTH ROYAL INSTITUTE OF TECHNOLOGY; OTÁVIO CAVALETT, NORWEGIAN UNIVERSITY OF SCIENCE AND TECHNOLOGY; RICARDO ANTONIO ALMEIDA PAZIANOTTO, CNPMA; DANILO FRANCISCO TROVO GAROFALO; MARILIA IEDA DA S F MATSUURA, CNPMA. |
Título: |
Towards a non-ambiguous view of the amortization period for quantifying direct land-use change in LCA. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
The International Journal of Life Cycle Assessment, v. 27, n. 12, p. 1299-1315, 2022. |
ISSN: |
1614-7502 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Purpose: To clarify the concept of the amortization period (20-year factor) associated with direct land-use change (dLUC) accounting, discuss its main inconsistencies, and propose improvements. The current practice is to divide (amortize) the estimated emissions associated with dLUC that has occurred over the last 20 years by another 20 years. Both periods are referred ambiguously as amortization period. Issues arise when considering them as a single temporal aspect (TA) that cannot fully represent the complexity of diverse research and policy contexts. Methods: First, a systematic review was conducted to understand the 20-year amortization history and concepts and discuss its inconsistencies. Based on the review results, we propose the adoption of two distinct TAs, decomposed from the amortization period. Then, we performed a sensitivity analysis by estimating carbon emissions due to dLUC in six land uses in Brazil: soybean, maize, sugarcane, pasture, planted forest, and mango. Results and discussion: The literature review shows that several strategies have emerged to reduce or avoid adopting the amortization period. However, most of these proposals are based on complex approaches focusing on alternatives associated with the life cycle impact assessment stage. We found that the commonly adopted amortization period has an ambiguous nature that could be explored at the life cycle inventory analysis stage. Thus, we argue that there are two distinct TAs linked to amortization in dLUC: (i) the inventory period adopted to account for land-use changes; and (ii) the period over which carbon emissions are annualized. These temporal aspects were named here the LUC-inventory period (IP) and the LUC-amortization period (AP), for clarification purposes. The sensitivity analysis showed that different values of IP and AP drastically change the emissions results due to dLUC in Brazil for different crops and land uses. Conclusion: We advocate that the amortization period should be decomposed into two TAs: LUC-inventory period and the LUC-amortization period. They affect how the carbon debt incurred by expanding agricultural land is accounted for and amortized over a given period-of-time. Therefore, to ensure regulatory compliance, we argued that these proposed TAs should be explicitly defined, based on three possibilities, depending on the goal and context of LCA studies, such as (i) fixed values set in standards and norms; (ii) IPCC's 20-year defaults; and (iii) customized IP and AP values based on the study's specificities. MenosAbstract: Purpose: To clarify the concept of the amortization period (20-year factor) associated with direct land-use change (dLUC) accounting, discuss its main inconsistencies, and propose improvements. The current practice is to divide (amortize) the estimated emissions associated with dLUC that has occurred over the last 20 years by another 20 years. Both periods are referred ambiguously as amortization period. Issues arise when considering them as a single temporal aspect (TA) that cannot fully represent the complexity of diverse research and policy contexts. Methods: First, a systematic review was conducted to understand the 20-year amortization history and concepts and discuss its inconsistencies. Based on the review results, we propose the adoption of two distinct TAs, decomposed from the amortization period. Then, we performed a sensitivity analysis by estimating carbon emissions due to dLUC in six land uses in Brazil: soybean, maize, sugarcane, pasture, planted forest, and mango. Results and discussion: The literature review shows that several strategies have emerged to reduce or avoid adopting the amortization period. However, most of these proposals are based on complex approaches focusing on alternatives associated with the life cycle impact assessment stage. We found that the commonly adopted amortization period has an ambiguous nature that could be explored at the life cycle inventory analysis stage. Thus, we argue that there are two distinct TAs linked to amor... Mostrar Tudo |
Palavras-Chave: |
Land transformation; LUC; Temporal aspects; Temporal dependence. |
Thesagro: |
Agricultura; Cana de Açúcar; Floresta; Manga; Milho; Pastagem; Soja; Uso da Terra. |
Thesaurus NAL: |
Agriculture; Brazil; Carbon footprint; Corn; Greenhouse gas emissions; Land use change; Life cycle assessment; Pastures; Plantation forestry; Soybeans; Sugarcane. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 03887naa a2200481 a 4500 001 2148673 005 2022-11-25 008 2022 bl uuuu u00u1 u #d 022 $a1614-7502 100 1 $aMACIEL, V. G. 245 $aTowards a non-ambiguous view of the amortization period for quantifying direct land-use change in LCA.$h[electronic resource] 260 $c2022 520 $aAbstract: Purpose: To clarify the concept of the amortization period (20-year factor) associated with direct land-use change (dLUC) accounting, discuss its main inconsistencies, and propose improvements. The current practice is to divide (amortize) the estimated emissions associated with dLUC that has occurred over the last 20 years by another 20 years. Both periods are referred ambiguously as amortization period. Issues arise when considering them as a single temporal aspect (TA) that cannot fully represent the complexity of diverse research and policy contexts. Methods: First, a systematic review was conducted to understand the 20-year amortization history and concepts and discuss its inconsistencies. Based on the review results, we propose the adoption of two distinct TAs, decomposed from the amortization period. Then, we performed a sensitivity analysis by estimating carbon emissions due to dLUC in six land uses in Brazil: soybean, maize, sugarcane, pasture, planted forest, and mango. Results and discussion: The literature review shows that several strategies have emerged to reduce or avoid adopting the amortization period. However, most of these proposals are based on complex approaches focusing on alternatives associated with the life cycle impact assessment stage. We found that the commonly adopted amortization period has an ambiguous nature that could be explored at the life cycle inventory analysis stage. Thus, we argue that there are two distinct TAs linked to amortization in dLUC: (i) the inventory period adopted to account for land-use changes; and (ii) the period over which carbon emissions are annualized. These temporal aspects were named here the LUC-inventory period (IP) and the LUC-amortization period (AP), for clarification purposes. The sensitivity analysis showed that different values of IP and AP drastically change the emissions results due to dLUC in Brazil for different crops and land uses. Conclusion: We advocate that the amortization period should be decomposed into two TAs: LUC-inventory period and the LUC-amortization period. They affect how the carbon debt incurred by expanding agricultural land is accounted for and amortized over a given period-of-time. Therefore, to ensure regulatory compliance, we argued that these proposed TAs should be explicitly defined, based on three possibilities, depending on the goal and context of LCA studies, such as (i) fixed values set in standards and norms; (ii) IPCC's 20-year defaults; and (iii) customized IP and AP values based on the study's specificities. 650 $aAgriculture 650 $aBrazil 650 $aCarbon footprint 650 $aCorn 650 $aGreenhouse gas emissions 650 $aLand use change 650 $aLife cycle assessment 650 $aPastures 650 $aPlantation forestry 650 $aSoybeans 650 $aSugarcane 650 $aAgricultura 650 $aCana de Açúcar 650 $aFloresta 650 $aManga 650 $aMilho 650 $aPastagem 650 $aSoja 650 $aUso da Terra 653 $aLand transformation 653 $aLUC 653 $aTemporal aspects 653 $aTemporal dependence 700 1 $aNOVAES, R. M. L. 700 1 $aBRANDÃO, M. 700 1 $aCAVALETT, O. 700 1 $aPAZIANOTTO, R. A. A. 700 1 $aGAROFALO, D. F. T. 700 1 $aMATSUURA, M. I. da S. F. 773 $tThe International Journal of Life Cycle Assessment$gv. 27, n. 12, p. 1299-1315, 2022.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Meio Ambiente (CNPMA) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|