Título:	Hierarchical pedotransfer functions for predicting bulk density in Brazilian soils.
Autoria:	REIS, A. M. H. dos TEIXEIRA, W. G. FONTANA, A. BARROS, A. H. C. VICTORIA, D. de C. VASQUES, G. M. SAMUEL-ROSA, A. OTTONI, M. V. MONTEIRO, J. E. B. de A.
Afiliação:	ALINE MARI HUF DOS REIS, UNIVERSIDADE FEDERAL DE GOIÁS; WENCESLAU GERALDES TEIXEIRA, CNPS; ADEMIR FONTANA, CNPS; ALEXANDRE HUGO CEZAR BARROS, CNPS; DANIEL DE CASTRO VICTORIA, CNPTIA; GUSTAVO DE MATTOS VASQUES, CNPS; ALESSANDRO SAMUEL-ROSA, UNIVERSIDADE TECNOLÓGICA FEDERAL DO PARANÁ; MARTA VASCONCELOS OTTONI, SERVIÇO GEOLÓGICO DO BRASIL; JOSE EDUARDO B DE ALMEIDA MONTEIRO, CNPTIA.
Ano de publicação:	2024
Referência:	Scientia Agricola, v. 81, e20220255, 2024.
Conteúdo:	Bulk density (BD) is a soil physical property used as a soil quality indicator and variations in this measurement influence soil water content and carbon stock estimates. This study aims to compile a database of samples of bulk density, textural fractions, and organic carbon values, as well as evaluate the accuracy of published pedotransfer functions (PTF) that predict bulk density, and propose a hierarchical PTF to predict the bulk density of Brazilian Soils. The performance of eleven PTFs and the newly proposed PTFs were evaluated and compared using the root mean square error (RMSE) and coefficient of determination (R2) based on a testing soil database collected from the literature. We noticed a slight improvement in accuracy when organic carbon and coarse and fine sand fractions were included as predictors alongside silt and clay. The best results with existing PTFs were obtained by PTF-A in Tomasella and Hodnett (1998) (RMSE = 0.20 g cm–3) and PTF-F in Benites et al. (2007) (RMSE = 0.17 g cm–3). Our proposed PTFs use textural fractions and organic carbon as predictors in a hierarchical form. The proposed PTF-4, which uses fine sand, coarse sand, clay, and organic carbon, presented the lowest value for RMSE (0.14 g cm–3) for BD prediction.
Thesagro:	Física do Solo
Palavras-chave:	Transfer functions Data compilation Textural fractions Organic carbon content Funções de pedotransferência Densidade aparente Carbono orgânico Banco de dados
Digital Object Identifier:	https://doi.org/10.1590/1678-992X-2022-0255
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPS)