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Aggregate Stability in Soil with Humic and Histic Horizons in a Toposequence under Araucaria Forest
Provedor de dados: 90
Autores: Hanke,Daniel; Dick,Deborah Pinheiro.
ABSTRACT Aggregate stability is one of the most important factors in soil conservation and maintenance of soil environmental functions. The objective of this study was to investigate the aggregate stability mechanisms related to chemical composition of organic matter in soil profiles with humic and histic horizons in a toposequence under Araucaria moist forest in southern Brazil. The soils sampled were classified as Humic Hapludox (highest position), Fluvaquentic Humaquepts (lowest slope position), and Typic Haplosaprists (floodplain). The C and N contents were determined in bulk soil samples. The chemical composition of soil organic matter was evaluated by infrared spectroscopy. Aggregate stability was determined by applying increasing levels of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbon; Soil structure; Ultrasound energy; Organo-mineral interaction; Hydrophobicity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100412