Data/hora: 22/06/2024 20:17:51

Biblioteca(s): | Embrapa Cocais; Embrapa Semiárido.
Data corrente: | 17/04/2018
Data da última atualização: | 02/05/2018
Autoria: | REIS, V. R. R.; SIGNOR, D.; MUNIZ, L. C.; SILVA, M. B. e; REGO, C. A. R. de M.; GARCIA, U. S.; CANTANHÊDE, I. S. de L.; COSTA, J. B.
Afiliação: | VICTOR ROBERTO RIBEIRO REIS, Maranhão State University (UEMA), São Luís; DIANA SIGNOR DEON, CPATSA; LUCIANO CAVALCANTE MUNIZ, Maranhão State University (UEMA), São Luís; MARLEN BARROS E SILVA, Maranhão State University (UEMA), São Luís; CARLOS AUGUSTO ROCHA DE MORAES REGO, West State University of Paraná (UNIOESTE), Marechal Candido Rondon; UELSON SERRA GARCIA, Federal University of Goiás (UFG), Goiânia; ILKA SOUTH DE LIMA CANTANHÊDE, Federal Institute of Education, Science and T echnology of Maranhão (IFMA), São Luís; JOAQUIM BEZERRA COSTA, CPACP.
Título: | Carbon stocks and soil organic matter quality under different of land uses in the Maranhense Amazon.
Ano de publicação: | 2018
Fonte/Imprenta: | Journal of Agricultural Science, v. 10, n. 5, p. 329-337, 2018.
Páginas: | 9 p.
DOI: | 10.5539/jas.v10n5p329
Idioma: | Inglês
Conteúdo: | In  the  face  of  the  traditional  model of  succession  of  native  environments  in  pastures  or  agricultural  areas,  followed  by  superpastejo  and  the  concern  with  emissions  of  greenhouse  gases  in  the  Brazilian  Amazon  region,  this work aims to determine the influence of different land uses on carbon sequestration and soil organic matter changes  in  the  municipality  of  Pindaré-Mirim,  in  state  of  Maranhão.  This  study  evaluated  different  uses  of  the  soil:   native   forest;   secondary   vegetation   (capoeira);   degraded   pasture and CLFI (Crop-Livestock-Forest Integration)  system.  The  deformed  and  undisturbed  samples  were  collected  at  depths:  0.00-0.10,  0.10-0.20,  0.20-0.30,  0.30-0.40,  0.40-0.60,  0.60-0.80  and .80-1.00  m.  Soil  densities  were  determined  by  the  volumetric ring  method,  the  carbon  stocks  by  the  carbon  content  in  the  soil  evaluating  the  dry  combustion,  and  the  accumulated  carbon  stocks  were  calculated  in  1.00  m.  The  physical  fractions  of  the  organic  matter  were  determined by means of the granulometric method. At depth 0.0-0.10 m, the soil density in the native forest (1.17 g cm-3)  was  lower  than  the  average  of  degraded  pasture  (1.40 g  cm-3).  There  was  no  difference  in  the  carbon ontent between all the land uses up to 0.40 m depth. The accumulated carbon stocks up to 1.00 m ranged from 49.52 Mg ha-1 to 64.41 Mg ha-1 and were higher in the native forest compared to capoeira and the ICLF system. In relation to the accumulated carbon stock, the native forest and degraded pasture were the ones that obtained the highest levels, followed by the capoeira and the CLFI system.
Palavras-Chave: | Agricultura de baixo carbono; Degraded grassland; Estoques de carbono; Fractionation of organic matter; Low carbon agriculture; Pastagem degradada.
Thesagro: | Matéria orgânica; Solo; Uso da Terra.
Thesaurus Nal: | Soil.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Cocais (CPACP)

Exemplares:

CPATSA - (57346-1) - UPC - AP - DD -  -  -  - DIS
CPACP - (1698-1) - UPC - AP - DD -  -  - 2018.00047 - DIS