Data/hora: 03/06/2024 13:40:49

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Tipo da produção científica: 	Artigo em Periódico Indexado	
Circulação/Nível: 	A - 2	
Data corrente: 	01/06/2022	
Data da última atualização: 	01/06/2022	
Autoria: 	DIAS, F. P. M.; LEANDRO, W. M.; FERNANDES, P. M.; XAVIER, F. A. da S.	
Afiliação: 	FABIANE PEREIRA MACHADO DIAS, Federal University of Goias; WILSON MOZENA LEANDRO, Federal University of Goias; PAULO MARÇAL FERNANDES, Federal University of Goias; FRANCISCO ALISSON DA SILVA XAVIER, CNPMF.	
Título: 	Impact of short-term land-use change on soil organic carbon dynamics in transitional agro-ecosystems: a case study in the Brazilian Cerrado.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Carbon Managemen, v. 13, Issue 1, 2022.	
Idioma: 	Inglês	
Conteúdo: 	Agricultural expansion directly impacts the dynamics of organic carbon (C) in the soil. After land use change, agricultural systems with greater resilience of soil C stocks could be preferentially adopted. The objective of the present study was to determine the impact of short-term conversion of grassland into different agricultural systems on soil organic C stocks and their resilience in a site-specific region of Brazilian Cerrado in the State of Goiás. The following systems were evaluated: pasture (PAST), no-tillage system (NT), four organic production systems (ORG) at different years of cultivation (2, 6, 8 and 10?years), and a continuous monoculture corn cropping system (CC). An area of native Cerrado (?Savanna?, CE) was selected and sampled for use as a steady state reference point. Resilience of soil organic C was measured based on calculation of the C resilience index and C management index. Soil C stocks in the 0-0.40?m depth varied from 61 to 111?Mg ha?1 and were reduced by 33% when converting from CE to cultivation regardless of management system. The labile C contents varied from 425 to 900?mg kg?1, and increased when PAST soils were converted to ORG cultivation. The highest values of C resilience and management indexes occurred in the ORG-2 and ORG-6 soils, showing that organic systems can recover organic C levels in the soil faster than other agricultural systems. On the other hand, no-tillage system when converted from pasture presents the lowest potential of soil C resilience in short-term in the site-specific conditions of studied Cerrado of Goiás State.	
Thesagro: 	Carbono; Cerrado.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
Exemplares: 	CNPMF - (33502-1) - UPC - AP - DD - Publicação digital -  -  - DIS