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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
02/10/2008 |
Data da última atualização: |
20/08/2013 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
PICHELLI, K. R. |
Afiliação: |
Kátia Regina Pichelli, Embrapa Florestas. |
Título: |
A micro comunicação e sua aplicação na relação entre técnicos extensionistas e assentados rurais para mobilização social. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE CIÊNCIAS DA COMUNICAÇÃO, 31., 2008, Natal, RN. Anais. São Paulo: INTERCOM: UFRN: UERN: UNP: FATERN. 2008. |
Páginas: |
15 p. |
Idioma: |
Português |
Palavras-Chave: |
Assentamento rural; Micro comunicação; Mobilização social. |
Thesagro: |
Extensão Rural. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/61372/1/SP5386.pdf
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Marc: |
LEADER 00646nam a2200157 a 4500 001 1314979 005 2013-08-20 008 2008 bl uuuu u00u1 u #d 100 1 $aPICHELLI, K. R. 245 $aA micro comunicação e sua aplicação na relação entre técnicos extensionistas e assentados rurais para mobilização social.$h[electronic resource] 260 $aIn: CONGRESSO BRASILEIRO DE CIÊNCIAS DA COMUNICAÇÃO, 31., 2008, Natal, RN. Anais. São Paulo: INTERCOM: UFRN: UERN: UNP: FATERN. 2008.$c2008 300 $a15 p. 650 $aExtensão Rural 653 $aAssentamento rural 653 $aMicro comunicação 653 $aMobilização social
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
Biblioteca(s): |
Embrapa Instrumentação; Embrapa Semiárido. |
Data corrente: |
10/04/2017 |
Data da última atualização: |
31/10/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
FREITAS, R. C. A.; POPIN, G. V.; MILORI, D. M. B. P.; SIGNOR, D.; DRUMOND, M. A.; CERRI, C. E. P. |
Afiliação: |
DEBORA MARCONDES BASTOS PEREIRA, CNPDIA. |
Título: |
Soil organic matter quality in Jatropha spp. plantations in different edaphoclimatic conditions. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
In: REVISTA BRASILEIRA DE CIÊNCIA DO SOLO, Viçosa, MG, n. 41, 18 p. 2017. |
DOI: |
10.1590/18069657rbcs20160218 |
Idioma: |
Inglês |
Conteúdo: |
The substitution of native vegetation by agricultural ecosystems can change the quantity and quality of soil organic matter (SOM), and the intensity of these changes depends on the soil type, climate, and land use. The objective of this study was to evaluate the quality of organic matter in chronosequences of Jatropha cultivation in contrasting soil and climatic conditions. Soil samples were evaluated at depths of 0.00-0.10, 0.20-0.30, and 0.80-1.00 m in chronosequences located in Planaltina, Distrito Federal (Cerrado-Pasture-Jatropha), Dourados, Mato Grosso do Sul (Atlantic Forest-Corn-Jatropha), and Araripina, Pernambuco (Caatinga-Jatropha). To assess SOM quality, we determined C contents in the SOM fractions, C stocks, the carbon management index (CMI), the SOM humification index (HLIF), and the C and N concentrations in the microbial biomass. The conversion of native vegetation to agropastoral systems changed the composition of SOM in the biomes evaluated, especially in the surface layers. The CMI and the C and N contents in the microbial biomass were the most responsive to land use changes in all the biomes studied. The pasture improved SOM quality by increasing the CMI (116) and the C content by 8, 21, and 6 % in the organic, mineral, and organomineral fractions, respectively, while maintaining the SOM humification index and the C and N contents in the microbial biomass in the 0-0.10 m layer. The lowest values of C in the SOM fractions, the CMI (52), and C microbial biomass (136 mg kg-1) were observed for annual crops. Jatropha cultivation increased C contents in the SOM fractions, C stocks, the CMI, and C and N in the microbial biomass with an increase in cultivation time, which demonstrates the potential of this long-term system for improving SOM quality. MenosThe substitution of native vegetation by agricultural ecosystems can change the quantity and quality of soil organic matter (SOM), and the intensity of these changes depends on the soil type, climate, and land use. The objective of this study was to evaluate the quality of organic matter in chronosequences of Jatropha cultivation in contrasting soil and climatic conditions. Soil samples were evaluated at depths of 0.00-0.10, 0.20-0.30, and 0.80-1.00 m in chronosequences located in Planaltina, Distrito Federal (Cerrado-Pasture-Jatropha), Dourados, Mato Grosso do Sul (Atlantic Forest-Corn-Jatropha), and Araripina, Pernambuco (Caatinga-Jatropha). To assess SOM quality, we determined C contents in the SOM fractions, C stocks, the carbon management index (CMI), the SOM humification index (HLIF), and the C and N concentrations in the microbial biomass. The conversion of native vegetation to agropastoral systems changed the composition of SOM in the biomes evaluated, especially in the surface layers. The CMI and the C and N contents in the microbial biomass were the most responsive to land use changes in all the biomes studied. The pasture improved SOM quality by increasing the CMI (116) and the C content by 8, 21, and 6 % in the organic, mineral, and organomineral fractions, respectively, while maintaining the SOM humification index and the C and N contents in the microbial biomass in the 0-0.10 m layer. The lowest values of C in the SOM fractions, the CMI (52), and C microbial bi... Mostrar Tudo |
Palavras-Chave: |
Carbon management index; Espectroscopia de fluorescência; Fracionamento de carbono do solo; Laser nduced fluorescence spectroscopy; Laser-induced fluorescence spectroscopy; Massa microbiana; Microbial biiomass; Mudança de uso da terra; Pinhão manso; Soil carbon fractionation. |
Thesagro: |
Carbono; Matéria Orgânica; Planta oleaginosa; Solo; Vegetação nativa. |
Thesaurus NAL: |
Land use change; Microbial biomass; Soil. |
Categoria do assunto: |
-- P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/165916/1/PROCI-17-Soil-organic-matter-quality-....pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/158778/1/Drumond-2017.pdf
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Marc: |
LEADER 03086naa a2200409 a 4500 001 2078612 005 2017-10-31 008 2017 bl uuuu u00u1 u #d 024 7 $a10.1590/18069657rbcs20160218$2DOI 100 1 $aFREITAS, R. C. A. 245 $aSoil organic matter quality in Jatropha spp. plantations in different edaphoclimatic conditions.$h[electronic resource] 260 $c2017 520 $aThe substitution of native vegetation by agricultural ecosystems can change the quantity and quality of soil organic matter (SOM), and the intensity of these changes depends on the soil type, climate, and land use. The objective of this study was to evaluate the quality of organic matter in chronosequences of Jatropha cultivation in contrasting soil and climatic conditions. Soil samples were evaluated at depths of 0.00-0.10, 0.20-0.30, and 0.80-1.00 m in chronosequences located in Planaltina, Distrito Federal (Cerrado-Pasture-Jatropha), Dourados, Mato Grosso do Sul (Atlantic Forest-Corn-Jatropha), and Araripina, Pernambuco (Caatinga-Jatropha). To assess SOM quality, we determined C contents in the SOM fractions, C stocks, the carbon management index (CMI), the SOM humification index (HLIF), and the C and N concentrations in the microbial biomass. The conversion of native vegetation to agropastoral systems changed the composition of SOM in the biomes evaluated, especially in the surface layers. The CMI and the C and N contents in the microbial biomass were the most responsive to land use changes in all the biomes studied. The pasture improved SOM quality by increasing the CMI (116) and the C content by 8, 21, and 6 % in the organic, mineral, and organomineral fractions, respectively, while maintaining the SOM humification index and the C and N contents in the microbial biomass in the 0-0.10 m layer. The lowest values of C in the SOM fractions, the CMI (52), and C microbial biomass (136 mg kg-1) were observed for annual crops. Jatropha cultivation increased C contents in the SOM fractions, C stocks, the CMI, and C and N in the microbial biomass with an increase in cultivation time, which demonstrates the potential of this long-term system for improving SOM quality. 650 $aLand use change 650 $aMicrobial biomass 650 $aSoil 650 $aCarbono 650 $aMatéria Orgânica 650 $aPlanta oleaginosa 650 $aSolo 650 $aVegetação nativa 653 $aCarbon management index 653 $aEspectroscopia de fluorescência 653 $aFracionamento de carbono do solo 653 $aLaser nduced fluorescence spectroscopy 653 $aLaser-induced fluorescence spectroscopy 653 $aMassa microbiana 653 $aMicrobial biiomass 653 $aMudança de uso da terra 653 $aPinhão manso 653 $aSoil carbon fractionation 700 1 $aPOPIN, G. V. 700 1 $aMILORI, D. M. B. P. 700 1 $aSIGNOR, D. 700 1 $aDRUMOND, M. A. 700 1 $aCERRI, C. E. P. 773 $tIn: REVISTA BRASILEIRA DE CIÊNCIA DO SOLO, Viçosa, MG$gn. 41, 18 p. 2017.
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