Data/hora: 21/06/2024 18:40:01

Biblioteca(s): 	Embrapa Agrobiologia.	
Data corrente: 	22/06/2005	
Data da última atualização: 	22/06/2005	
Autoria: 	GARAY, I.; PELLENS, R.; KINDEL, A.; BARROS, E.; FRANCO, A. A.	
Título: 	Evaluation of soil conditions in fast-growing plantations of Eucalyptus grandis and Acacia mangium in Brazil: a contribution to the study of sustainable land use.	
Ano de publicação: 	2004	
Fonte/Imprenta: 	Applied Soil Ecology, Amsterdam, v. 27, p. 177-187, oct. 2004.	
Idioma: 	Inglês	
Conteúdo: 	This study is a comparison of the holorganic horizons (L and f) and hemiorganic horizons (A11 and A12) of 7-years-old stands of Eucalyptus grandis and Acacia mangium, in the region of the Tabuleiro forest, in Linhares, Espírito Santo, Brazil. In the soil under A. mangium, the stocks of organic matter in the L and F horizons were higher, and the C?N ratio was lower, due to the high nitrogen content of the leaf material. The same was observed for the A horizon chemical properties: the C and nutrients concentrations of the soil fine fraction were higher under A. mangium. The comparison of the C and nutrient concentrations between the A121 and A12 horizons ad between the aggregate fraction and fine fraction showed similar trends in both sites. In both plantations, the C and nutrient tha the soil fine fraction. Nevertheless, the percentage of aggregates in the soil matrix was much higher in A. mangium than in E. grandis. These resultshow that in this superficially sandy soil (Argissolo Amarelo Distrófico - Ultisol), the organic matter is the most importsnt way of keeping nutrients, and that the aggregate fraction can be the most effective way of avoiding nutrient loss to the deeper soil horizons. In this context, A.manium provides better conditions for restoring thev soil fertility and soil biodiversity, thus providing better sustainabilityof the croping system,s than E.grandis  	
Palavras-Chave: 	Soil reclamation.	
Thesagro: 	Árvore; Fertilidade do Solo; Recuperação do Solo.	
Thesaurus Nal: 	soil fertility; trees.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Agrobiologia (CNPAB)	
Exemplares: 	CNPAB - (32557-1) - UPC - SP - -- -  -  - 0022836 - DIS