Data/hora: 22/06/2024 01:03:02

Biblioteca(s): | Embrapa Semiárido.
Data corrente: | 19/02/2019
Data da última atualização: | 24/08/2023
Autoria: | SANTANA, M. da S.; SAMPAIO, E. V. de S. B.; GIONGO, V.; MENEZES, R. S. C.; JESUS, K. N. de; ALBUQUERQUE, E. R. G. M. de; NASCIMENTO, D. M. do; PAREYN, F. G. C.; CUNHA, T. J. F.; SAMPAIO, R. M. B.; PRIMO, D. C.
Afiliação: | MÔNICA DA SILVA SANTANA; EVERARDO VALADARES DE SÁ BARRETTO SAMPAIO; VANDERLISE GIONGO, CPATSA; RÔMULO SIMÕES CEZAR MENEZES; KENNEDY NASCIMENTO DE JESUS; ELIZA ROSÁRIO GOMES MARINHO DE ALBUQUERQUE; DIEGO MARCELINO DO NASCIMENTO; FRANS GERMAIN CORNEEL PAREYN; TONY JARBAS FERREIRA CUNHA, CPATSA; RAQUEL MENEZES BEZERRA SAMPAIO; DÁRIO COSTA PRIMO.
Título: | Carbon and nitrogen stocks of soils under different land uses in Pernambuco state, Brazil.
Ano de publicação: | 2019
Fonte/Imprenta: | Geoderma Regional, v. 16, mar. 2019.
Idioma: | Inglês
Conteúdo: | Acrisols, Ferralsols, Leptosols and Planosols were sampled in layers down to 1 m under dense caatinga, open caatinga, pasture and agriculture. Agricultural Leptosols and Planosols had the lowest C and N concentrations among the land uses, although in some cases differences were not statistically significant. On average, conversion of dense caatinga to agriculture reduced C stocks from63 to 47 Mg ha?1. Acrisols had the highest concentrations of C and N, and Planosols had the lowest concentrations and stocks. Conversion to pasture did not reduce stocks, but open caatinga also had lower C stocks (50 Mg ha?1) than dense caatinga. Nitrogen stocks did not differ among land uses, implying that losses are greater for C than for N. Despite the fact that the western portion of Pernambuco state covers 3% of the Brazilian semi-arid area, it stocks about 0.20 Pg of C (and 0.019 Pg of N), which represents 2% of the total estimated soil C stock in the semiarid region (8.9 Pg). Therefore, the stock per hectare in the west portion of Pernambuco is about one-third smaller than the stock per hectare in the whole Brazilian semiarid region, probably a consequence of the lower average C concentration in the 20 cm superficial layer, a higher proportion of agricultural fields and shallower depths of some soil classes inwestern Pernambuco than in the whole semiarid region.
Palavras-Chave: | Estoque de carbono; Leptossolos; Pernambuco; Profundidade do solo; Semiárido.
Thesagro: | Nitrogênio; Solo; Uso da Terra.
Thesaurus Nal: | Acrisols; Ferralsols; Planosols; Soil.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (58048-1) - UPC - AP - DD -  -  -  - DIS