Results 41 to 50 of about 182 (139)

Influences of Sampling Design and Model Selection on Predictions of Chemical Compounds in Petroferric Formations in the Brazilian Amazon

Remote Sensing
Morro de Seis Lagos, a region in the Brazilian Amazon, contains a small (less than 1%) formation of siderite carbonatites which is considered to be one of the world’s largest niobium reserves.
Niriele Bruno Rodrigues, Theresa Rocco Barbosa, Helena Saraiva Koenow Pinheiro, Marcelo Mancini, Quentin D. Read, Joshua Blackstock, Edwin H. Winzeler, David Miller, Phillip R. Owens, Zamir Libohova   +9 more
doaj   +1 more source

A Stochastic Approach to Quantifying the Propagation of Uncertainty in Soil Organic Carbon Content

Journal of Plant Nutrition and Soil Science, Volume 189, Issue 1, Page 117-130, February 2026.
ABSTRACT Background Precision agriculture (PA) is a site‐specific management approach that utilises spatiotemporal information to improve productivity while also promoting sustainability. Accurate estimates of soil properties, along with the uncertainty of these estimates, are necessary for decision‐making in PA.
Leonardo Inforsato, Pablo Rosso, Magdalena Main‐Knorn, Ahsan Raza, Siyu Huang, Gohar Ghazaryan, Claas Nendel   +6 more
wiley   +1 more source

VIS-NIR spectral reflectance for discretization of soils with high sand content

Semina: Ciências Agrárias, 2019
The aim of this study is to evaluate the spatial distribution and relationships between the physicochemical attributes and radiometry of soils with high sand contents.
Gustavo Eduardo Pereira, Letícia Sequinatto, Jaime Antonio de Almeida, Alexandre ten Caten, Josie Moraes Mota   +4 more
doaj   +3 more sources

Digital soil mapping from conventional field soil observations

Soil and Water Research, 2013
We tested the performance of a formalized digital soil mapping (DSM) approach comprising fuzzy k-means (FKM) classification and regression-kriging to produce soil type maps from a fine-scale soil observation network in Rišňovce, Slovakia.
Juraj BALKOVIČ, Zuzana RAMPAŠEKOVÁ, Vladimír HUTÁR, Jaroslava SOBOCKÁ, Rastislav SKALSKÝ   +4 more
doaj   +1 more source

A pedogeomorphic strategy for tidal marsh carbon accounting

Soil Science Society of America Journal, Volume 90, Issue 1, January/February 2026.
Abstract Tidal marsh soils have some of the largest carbon stocks of any ecosystem, yet uncertainty remains about the best approach to quantify these C stocks. We tested whether separating tidal marshes into pedogeomorphic units (PGUs) could improve regional‐scale blue C accounting in two separate regions on the Atlantic coast: southern New England (NE)
Joseph V. Manetta, Marissa Dellinger, Bailey Parrish, Matthew C. Ricker, Mark H. Stolt   +4 more
wiley   +1 more source

Complementary geophysical, geomorphometric and pedological approaches for characterizing shallow and deep subsurface materials in a colluvial‐alluvial plain in Atlantic rainforest

Earth Surface Processes and Landforms, Volume 50, Issue 15, December 2025.
This study combines GPR, 2D ERT and UAV‐derived terrain models to characterize sediment variability in a colluvial‐alluvial plain. GPR identified sandy lenses and clay‐rich layers, while ERT revealed deeper conductive and resistive zones, including a gneissic basement.
Nádia Mariane Mucha, Luiz Claudio de Paula Souza, Alessandra de Barros Silva Bongiolo, Rodoilton Stevanato, Rafael Espindola Canata, Jairo Calderari de Oliveira   +5 more
wiley   +1 more source

Soil legacy data: An opportunity for digital soil mapping [PDF]

Revista Brasileira de Ciência do Solo
Soil legacy data is past information on soils available from various sources (e.g. survey reports and maps). When compiled and organized, data obtained through historical retrieval can be used as basic input or validation data for digital soil mapping. A
Beatriz Macêdo Medeiros, Letícia Sequinatto-Rossi, Alexandre ten Caten, Gustavo Eduardo Pereira, Elisângela Benedet da Silva, Kelly Tamires Urbano Daboit   +5 more
doaj   +1 more source

Adjusting Bulk Density Observations in the Hungarian Soil Information and Monitoring System Using Pedotransfer Functions

European Journal of Soil Science, Volume 76, Issue 6, November–December 2025.
ABSTRACT Bulk density (BD) is among the most important physical soil properties, influencing many other soil properties, functions and services. An earlier study revealed that BD observations in the Hungarian Soil Information and Monitoring System (SIMS) contain errors and need correction.
Seyedehmehrmanzar Sohrab, Brigitta Szabó, László Pásztor, András Makó, Gábor Szatmári   +4 more
wiley   +1 more source

A Framework Based on Isoparameters for Clustering and Mapping Geophysical Data in Pedogeomorphological Studies

Soil Systems
Understanding soil variability supports improved land use and soil security. This study aimed to generate uniform geophysical classes by integrating data from three proximal geophysical sensors with synthetic soil and satellite images using machine ...
Gustavo Vieira Veloso, Danilo César de Mello, Heitor Paiva Palma, Murilo Ferre Mello, Lucas Vieira Silva, Elpídio Inácio Fernandes-Filho, Márcio Rocha Francelino, Tiago Osório Ferreira, José Cola Zanuncio, Davi Feital Gjorup, Roney Berti de Oliveira, Marcos Rafael Nanni, Renan Falcioni, José A. M. Demattê   +13 more
doaj   +1 more source

Global mapping of volumetric water retention at 100, 330 and 15 000 cm suction using the WoSIS database

International Soil and Water Conservation Research, 2023
Present global maps of soil water retention (SWR) are mostly derived from pedotransfer functions (PTFs) applied to maps of other basic soil properties.
Maria Eliza Turek, Laura Poggio, Niels H. Batjes, Robson André Armindo, Quirijn de Jong van Lier, Luis de Sousa, Gerard B.M. Heuvelink   +6 more
doaj   +1 more source