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All publications of “Ricardo Simão Diniz Dalmolin”

19 results

Field Description and Identification of Diagnostic Qualifiers for Urban Soils in Brazil

Jéssica Rafaela da Costa ORCID logo , Fabrício de Araújo Pedron ORCID logo , Ricardo Simão Diniz Dalmolin ORCID logo , Ricardo Bergamo Schenato ORCID logo

14/Jun/2019

ABSTRACT Human activities often alter soils found in urban areas. These alterations affect their environmental functions and potential for use. However, soils from urban areas in Brazil have not been surveyed and identified, which can pose a technical problem for the development of the city. Considering the importance of urban environments and their soils, this study aimed to evaluate the environmental and morphological characteristics and the physical properties of urban soils in Santa Maria, Rio Grande do Sul, Brazil. The […]

Edaphic and Topographic Factors and their Relationship with Dendrometric Variation of Pinus Taeda L. in a High Altitude Subtropical Climate

Taciara Zborowski Horst, Ricardo Simão Diniz Dalmolin, Alexandre ten Caten, Jean Michel Moura-Bueno, Luciano Campos Cancian, Fabrício de Araújo Pedron, [...]

26/Nov/2018

ABSTRACT The study of the relationships between the yield potential of forest stands and the conditions offered for plant development is fundamental for the adequate management of the forest when aiming at sustainable high yields. However, these relations are not clear, especially in commercial forests, on rugged terrain where relationships between the landscape, soil, and plants are more complex. Considering this, we tested the hypothesis that the morphological aspects of the soil conditioned by topography are the main limiting factors […]

Visual Abstract

Magnetic Susceptibility of Soil to Differentiate Soil Environments in Southern Brazil

Priscila Vogelei Ramos, Ricardo Simão Diniz Dalmolin, José Marques, Diego Silva Siqueira, Jaime Antonio de Almeida, Jean Michel Moura-Bueno

11/Jan/2017

ABSTRACT The interest in new techniques to support digital soil mapping (DSM) is increasing. Numerous studies pointed out that the measure of magnetic susceptibility (MS) can be extremely useful in the identification of properties related with factors and processes of soil formation, applied to soil mapping. This study addressed the effectiveness of magnetic soil susceptibility to identify and facilitate the distinction of different pedogenic environments of a representative hillslope in the highland Planalto Médio in the state of Rio Grande […]

Assessment of Digital Elevation Model for Digital Soil Mapping in a Watershed with Gently Undulating Topography

Jean Michel Moura-Bueno, Ricardo Simão Diniz Dalmolin, Alexandre ten Caten, Luis Fernando Chimelo Ruiz, Priscila Vogelei Ramos, André Carnieletto Dotto

06/Jun/2016

ABSTRACT Terrain attributes (TAs) derived from digital elevation models (DEMs) are frequently used in digital soil mapping (DSM) as auxiliary covariates in the construction of prediction models. The DEMs and information extracted from it may be limited with regard to the spatial resolution and error magnitude, and can differ in the behavior of terrain features. The objective of this study was to evaluate the quality and limitations of free DEM data and to evaluate a topographic survey (TS) underlying the […]

Potential of Spectroradiometry to Classify Soil Clay Content

André Carnieletto Dotto, Ricardo Simão Diniz Dalmolin, Alexandre ten Caten, Jean Michel Moura-Bueno

06/Apr/2016

ABSTRACT Diffuse reflectance spectroscopy (DRS) is a fast and cheap alternative for soil clay, but needs further investigation to assess the scope of application. The purpose of the study was to develop a linear regression model to predict clay content from DRS data, to classify the soils into three textural classes, similar to those defined by a regulation of the Brazilian Ministry of Agriculture, Livestock and Food Supply. The DRS data of 412 soil samples, from the 0.0-0.5 m layer, […]

MINERAL RESERVES OF K DETERMINED BY DIFFERENT METHODS IN SUBTROPICAL ARGISSOLOS SOILS

Estefane Chaves, Fabrício de Araújo Pedron, Vander Freitas de Melo, Ricardo Simão Diniz Dalmolin

01/Jul/2015

Integration of chemical extraction methods and X-ray diffraction can broaden understanding of K+ forms and reserves in soil fractions, and their potential release to plants. The aim of this study was to use chemical extraction methods to estimate mineral reserves of K+ in sand, silt, and clay from subtropical soils; to associate extraction mechanisms with the forms of K+ released; and to monitor the dynamic of K+ release in a kinetics study. The sand, silt, and clay fractions of the […]

Boundary between Soil and Saprolite in Alisols in the South of Brazil

Fabrício de Araújo Pedron, Rodrigo Bomicieli de Oliveira, Ricardo Simão Diniz Dalmolin, Antonio Carlos de Azevedo and, Ricardo Vargas Kilca

01/May/2015

Despite numerous studies conducted on the lower limit of soil and its contact with saprolite layers, a great deal of work is left to standardize identification and annotation of these variables in the field. In shallow soils, the appropriately noting these limits or contacts is essential for determining their behavior and potential use. The aims of this study were to identify and define the field contact and/or transition zone between soil and saprolite in profiles of an Alisol derived from […]

Digital mapping of soil properties: particle size and soil organic matter by diffuse reflectance spectroscopy

André Carnieletto Dotto, Ricardo Simão Diniz Dalmolin, Fabrício de Araújo Pedron, Alexandre ten Caten, Luis Fernando Chimelo Ruiz

01/Dec/2014

Diffuse reflectance spectroscopy (DRS) can be used as an alternative in identifying and quantifying some soil properties such as particle size and soil organic matter (SOM). This technique may be an alternative to quantifying those properties in a large volume of soil samples since it is faster and less costly and does not produce chemical residues. The aim of this study was to develop models using multiple linear regression analysis to predict the content of clay, sand, silt, and SOM […]

Use of quantitative mineralogical variables in identifying sources of sediment in a watershed do Rio Grande do Sul

Pablo Miguel, Ricardo Simão Diniz Dalmolin, Fabrício de Araújo Pedron, Jean Michel Moura-Bueno

01/Jun/2014

The use of mineralogy as a tool for assessment of soil mineral properties is extremely important for understanding the different chemical and physical relationships in the soil. These variables/properties in the identification of sources of suspended sediments may help elucidate the factors and processes that govern the transfer of sediments and pollutants from terrestrial to aquatic systems. The aim of this study was to quantitatively characterize the mineralogy of the soil of the sources and suspended sediments in a watershed […]

Identifying sources of sediment production in a hillside catchment area

Pablo Miguel, Ricardo Simão Diniz Dalmolin, Fabrício de Araújo Pedron, Jean Michel Moura-Bueno, Tales Tiecher

01/Apr/2014

Land use outside of its agricultural suitability is the main cause of degradation of natural resources due to anthropogenic activities. Agricultural activities are among those that most disturb the environment, exposing the soil to the action of water erosion and accelerating the transfer of sediments into bodies of water. In recent years, the fingerprinting method for identifying sources of sediment has been successfully used throughout the world; however, such studies in Brazil are still incipient. This study aims to estimate […]

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