Data/hora: 09/06/2024 02:49:07

Provedor de dados: 	Scientia Agricola	
País: 	Brazil	
Título: 	Landscape and soil regionalization in southern Brazilian Amazon and contiguous areas: methodology and relevance for ecological studies	
Autores: 	Volkoff,Boris; Mello,Francisco Fujita de Castro; Maia,Stoécio Malta Ferreira; Cerri,Carlos Eduardo Pellegrino.	
Data: 	2012-06-01	
Ano: 	2012	
Palavras-chave: 	Brazil; Rondônia; Mato Grosso; Regional soil diversity.	
Resumo: 	Soils of a large tropical area with differentiated landscapes cannot be treated uniformly for ecological applications. We intend to develop a framework based on physiography that can be used in regional applications. The study region occupies more than 1.1 million km² and is located at the junction of the savanna region of Central Brazil and the Amazon forest. It includes a portion of the high sedimentary Central Brazil plateau and large areas of mostly peneplained crystalline shield on the border of the wide inner-Amazon low sedimentary plain. A first broad subdivision was made into landscape regions followed by a more detailed subdivision into soil regions. Mapping information was extracted from soil survey maps at scales of 1:250000-1:500000. Soil units were integrated within a homogenized legend using a set of selected attributes such as taxonomic term, the texture of the B horizon and the associated vegetation. For each region, a detailed inventory of the soil units with their area distribution was elaborated. Ten landscape regions and twenty-four soil regions were recognized and delineated. Soil cover of a region is normally characterized by a cluster composed of many soil units. Soil diversity is comparable in the landscape and the soil regions. Composition of the soil cover is quantitatively expressed in terms of area extension of the soil units. Such geographic divisions characterized by grouping soil units and their spatial estimates must be used for regional ecological applications.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000300007	
Editor: 	São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"	
Relação: 	10.1590/S0103-90162012000300007	
Formato: 	text/html	
Fonte: 	Scientia Agricola  v.69 n.3 2012	
Fonte: 	info:eu-repo/semantics/openAccess