Data/hora: 20/06/2024 19:55:42

Biblioteca(s): 	Embrapa Semiárido.	
Tipo da produção científica: 	Artigo em Periódico Indexado	
Circulação/Nível: 	A - 1	
Data corrente: 	04/04/2017	
Data da última atualização: 	04/05/2022	
Autoria: 	DURIGAN, M. R.; CHERUBIN, M. R.; CAMARGO, P. B. de; FERREIRA, J. N.; BERENGUER, E.; GARDNER, T. A.; BARLOW, J.; DIAS, C. T. dos S.; SIGNOR, D.; OLIVEIRA JUNIOR, R. C. de; CERRI, C. E. P.	
Afiliação: 	MARIANA REGINA DURIGAN, ESALQ/USP; MAURÍCIO ROBERTO CHERUBIN, CENA/USP; PLÍNIO BARBOSA DE CAMARGO, CENA/USP; JOICE NUNES FERREIRA, CPATU; ERIKA BERENGUER, Lancaster University / University of Oxford; TOBY ALAN GARDNER, International Institute for Sustainability / Stockholm Environment Institute; JOS BARLOW, Lancaster University / MPEG; CARLOS TADEU DOS SANTOS DIAS, ESALQ/USP; DIANA SIGNOR DEON, CPATSA; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; CARLOS EDUARDO PELLEGRINO CERRI, ESALQ/USP.	
Título: 	Soil organic matter responses to anthropogenic forest disturbance and land use change in the Eastern Brazilian Amazon.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Sustainability, v. 9, n. 3, Mar. 2017.	
ISSN: 	2071-1050	
DOI: 	http://dx.doi.org/10.3390/su9030379	
Idioma: 	Inglês	
Conteúdo: 	Anthropogenic forest disturbance and land use change (LUC) in the Amazon region is the main source of greenhouse gas emissions to the atmosphere in Brazil, due to the carbon (C) and nitrogen (N) emitted from vegetation clearance. Land use conversion associated with management practices plays a key role in the distribution and origin of C in different soil organic matter (SOM) fractions. Here, we show how changing land use systems have influenced soil C and N stocks, SOM physical fractions, and the origin of SOM in the Santarém region of the eastern Brazilian Amazon. Soil C and N stocks were calculated for the surface layer of 0?30 cm. Anthropogenic disturbances to the standing forest, such as selective logging and wildfires, led to significant declines in soil C and N stocks. However, in the long-term, the conversion of the Amazon forest to pasture did not have a noticeable effect on soil C and N stocks, presumably because of additional inputs from pasture grasses. However, the conversion to cropland did lead to reductions in soil C and N content. According to the physical fractionation of SOM, LUC altered SOM quality, but silt and clay remained the combined fraction that contributed the most to soil C storage. Our results emphasize the importance of implementing more sustainable forest management systems, whilst also calling further attention to the need for fire monitoring systems, helping to ensure the resilience of C and N stocks and sequestration in forest soils; thereby contributing towards urgently needed ongoing efforts to mitigate climate change	
Palavras-Chave: 	Manejo de solo; Mitigação; Pasture; Sequestro de carbono; Soil carbon; Uso do solo.	
Thesagro: 	Carbono; Efeito Estufa; Floresta; Matéria orgânica; Mudança Climática; Pastagem; Solo.	
Thesaurus Nal: 	Cropland; Tropical forests.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/164678/1/Diana-2017.pdf	
Registro original: 	Embrapa Semiárido (CPATSA)	
Exemplares: 	CPATSA - (56537-1) - UPC - AP - DD -  -  -  - DIS