Data/hora: 08/06/2024 01:48:58

Biblioteca(s): 	Embrapa Agrobiologia; Embrapa Amazônia Ocidental; Embrapa Pantanal.	
Data corrente: 	03/04/1995	
Data da última atualização: 	04/04/2017	
Autoria: 	EDEN, M. J.; FURLEY, P. A.; McGREGOR, D. F. M.; MILLIKEN, W.; RATTER, J. A.	
Título: 	Effect of forest clearance and burning on soil properties in northern Roraima, Brazil.	
Ano de publicação: 	1991	
Fonte/Imprenta: 	Forest Ecology and Management, v.38, n.3/4, p.283-290, 1991.	
Idioma: 	Inglês	
Conteúdo: 	Clearance of evergreen seasonal forest for cattle pasture is examined in an area of northern Roraima. Coloniao (Panicum maximum Jacq.) and kikuyu grass (Brachiaria humidicola (Rendle) Scweik) are commonly established on cleared forest land. Current rates of clearance are rather low as also is grazing intensity (1-2 animals ha-1), but soil physical and chemical changes are occurring. Thus, topsoil bulk density increase over time in new pasture. Also, available nutrients decline from the enhaced levels that prevail after initial clearance and burning. In particular, available P is low in the acid soils and, as elsewhere in Amonia, probably limiting to pasture growth. For local ranchers, the best source of nutrients is the standing forest, so every incentive exist to continue forest destruction for new pasture.	
Palavras-Chave: 	Clareira; Clearing; Efeito; Effect; Fire; Forest; Properties; Propriedade; Roraima (Brazil).	
Thesagro: 	Floresta; Fogo; Pastagem; Queimada; Solo.	
Thesaurus Nal: 	Brazil; burning; soil.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CNPAB - (17195-1) - ADC - SP - -- -  -  - 15298 - DIS
CPAP - (27888-1) - ADD - SP - PP - SP14195 -  - 14195 - DIS
CPAA - (35600-1) - ADD - SP - PP - S7881 -  - S7881 - DIS