Data/hora: 06/06/2024 06:19:04

Provedor de dados: 	91	
País: 	Brazil	
Título: 	Aggregation, carbon, and total soil nitrogen in crop-livestock-forest integration in the Eastern Amazon	
Autores: 	Silva,Jéssica C. N.; Silva,Arystides R.; Veloso,Carlos A. C.; Dantas,Edilândia F.; Sacramento,José A. A. S. do.	
Data: 	2018-12-01	
Ano: 	2018	
Palavras-chave: 	Organic carbon; Soil physics; Sustainability; Brazilian Amazon.	
Resumo: 	ABSTRACT Sustainable agricultural production systems can improve physical attributes of soil as well as increase carbon and nitrogen stocks in soils. The objective of this study was to evaluate changes in the stability of soil aggregates and contents and stocks of carbon and nitrogen after the conversion of native forest to crop-livestock-forest integration systems in the region of Western Pará. Soil samples from five management systems (including a control) were collected at three depths in a randomized block design, with five replications. The stability of the aggregates, soil density, particle density, and total soil porosity, as well as total carbon and nitrogen and their respective stocks were evaluated. The native forest had the highest percentages of macroaggregates, followed by the integration system with African mahogany. At a depth of 0-0.10 m, the contents and stocks of carbon were higher in the agricultural area and in the integration system with cumaru, whereas nitrogen contents and stocks were higher in the native forest, followed by the integration systems with mahogany and cumaru. Compared to the other systems, the pasture area stored more carbon at depths of 0-0.10 and 0.10-0.20 m.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001200837	
Editor: 	Departamento de Engenharia Agrícola  - UFCG	
Relação: 	10.1590/1807-1929/agriambi.v22n12p837-842	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Engenharia Agrícola e Ambiental  v.22 n.12 2018	
Fonte: 	info:eu-repo/semantics/openAccess