Title:	Pedometric tools for classification of southwestern Amazonian soils: a quali-quantitative interpretation incorporating visible-near infrared spectroscopy.
Authors:	TAVARES, O. C. H. TAVARES, T. R. PINHEIRO JUNIOR, C. R. SILVA, L. M. da WADT, P. G. S. PEREIRA, M. G.
Affiliation:	ORLANDO C. H. TAVARES, Universidade Federal Rural do Rio de Janeiro (UFRRJ); TIAGO R. TAVARES, Centro de Energia Nuclear na Agricultura (CENA) / Universidade de São Paulo (USP); CARLOS R. PINHEIRO JUNIOR, Universidade Federal Rural do Rio de Janeiro (UFRRJ); LUCIELIO MANOEL DA SILVA, CPAF-AC; PAULO GUILHERME SALVADOR WADT, CPAF-RO; MARCOS G. PEREIRA, Universidade Federal Rural do Rio de Janeiro (UFRRJ).
Date Issued:	2022
Citation:	Journal of Near Infrared Spectroscopy, v. 30, n. 1, p. 18-30, Feb. 2022.
Description:	The southwestern region of the Amazon has great environmental variability, presents a great complexity of pedoenvironments due to its rich variability of geological and geomorphological environments, as well as for being a transition region with other two Brazilian biomes. In this study, the use of pedometric tools (the Algorithms for Quantitative Pedology (AQP) R package and diffuse reflectance spectroscopy) was evaluated for the characterization of 15 soil profiles in southwestern Amazon. The AQP statistical package-which evaluates the soil in-depth based on slicing functions-indicated a wide range of variation in soil attributes, especially in the superficial horizons. In addition, the results obtained in the similarity analysis corroborated with the description of physical, chemical components and oxide contents in-depth, aiding the classification of soil profiles. The in-depth characterization of visible-near infrared spectra allowed inference of the pedogenetic processes of some profiles, setting precedents for future work aiming to establish analytical strategies for soil classification in southwestern Amazon based on spectral data.
Thesagro:	Classificação do Solo
NAL Thesaurus:	Soil classification Near-infrared spectroscopy Amazonia
Keywords:	Espectroscopia no infravermelho próximo Pedometrics AQP R package Soil-depth functions Soil attributes Diffuse reflectance spectroscopy Clasificación de suelos Espectroscopía del infrarrojo cercano
ISSN:	0967-0335
DOI:	https://doi.org/10.1177/09670335211061854
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAF-AC)