Estabilidade de agregados de um Neossolo Quartzarênico sob pastagem e mata em Baliza-Go
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Data
2010
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Resumo
This article is to report scientific experiment conducted by JUNQUEIRA,
CORRECHEL, CUSTÓDIO FILHO, SANTOS & JUNQUEIRA (2009). The aim of this
study was to evaluate the percentage of water stable aggregates of a entisol along a
transect that began in a pasture used for 40 years and completed within a permanent preservation área along the slope in the plan of settlement Oziel Alves
Pereira in the town of Baliza-go. in the methodology, were collected samples of
undisturbed soil blocks in six points of the transect, to determine the percentage of
water stable aggregates and calculate indices dmg (geometric mean diameter) and
dmp (average diameter) of the transect points in the pasture and forest. the results
show variations in the fractions of agregates in different predominant land uses. the
pasture was a greater percentage of aggregates larger than 2 mm, although not
significant correlation of this variable with organic matter. however, the percentage of
large aggregates or the aggregation indexes dmp and dmg did not differ significantly
in systems, showing the fragility of these soils and emphasizing the importance of
pedology as a basis for occupation, management and soil conservation. conclusion:
according to historical land use and intensity of current use, erosion settled in the
area with a tendency to evolve, because although the indices of aggregate stability
reveal more than 70% of stable aggregates, this aggregation has not been
satisfactory to protect the soil against erosion.
Descrição
Palavras-chave
Qualidade estrutural, Resistência à erosão, Superpastejo, Strutural quality, Resistence to erosion, Overgrazing
Citação
JUNQUEIRA, Korran Ribeiro; CORRECHEL, Vladia; CUSTODIO FILHO, Ronaldo de Oliveira; SANTOS, Felipe Corrêa Veloso dos; JUNQUEIRA, Marciclene de Freitas Ribeiro. Estabilidade de agregados de um Neossolo Quartzarênico sob pastagem e mata em Baliza-Go. Enciclopédia Biosfera, Goiânia, v. 6, n. 10, p. 1-7, 2010.