Estudo da relação pedomorfogeológica na distribuição de solos com horizontes B textural e B nítico na paisagem de Lavras (MG)

Lacerda, Marilusa Pinto Coelho; Quéméneur, J. J. G.; Andrade, Humber Agrelli; Alves, Helena Maria Ramos; Vieira, T. G. C.

doi:10.1590/s0100-06832008000100026

Cited by 7 publications

(6 citation statements)

References 6 publications

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“…Color variations may be a response to alterations in relief, vegetation, depth, weather, aeration, parent material, weathering degree, mineralogy, and OM content (Schulze et al, 1993;Schwertmann, 1993), linked to the origin of these soils (Lacerda et al, 2008).…”

Section: Morphological Aspectsmentioning

confidence: 99%

Surface Spectroscopy of Oxisols, Entisols and Inceptisol and Relationships with Selected Soil Properties

Poppiel

Lacerda

Oliveira

et al. 2018

Rev. Bras. Ciênc. Solo

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Traditional method of soil survey is expensive, slow, and must be carried out by experienced researchers. Thus, advances in soil observation technologies and the need to obtain information quickly by modern techniques have intensified the use of proximal sensing. This study characterized surface reflectance spectra (A horizon) and related them to traditional soil classification, based on morphological, physical, and chemical properties of representative pedogenetic profiles, developed in two toposequences of the Distrito Federal, Brazil. In the toposequences, 15 soil profiles were selected for a complete morphological description and sampling for laboratory analyses. Soil-landscape relationships were established, and profiles were classified to the fourth level of the Brazilian Soil Classification System (SiBCS). Classes of similar soils were grouped based on their surface spectra, resulting in spectral curves of 10 representative soils in the studied area. The Morphological Interpretation of Reflectance Spectrum (MIRS) and second derivative of the Kubelka-Munk (KM) function were applied to the soil spectra. The clustered soils were similar, mainly in terms of color, textural class, and organic matter content. Groups based on soil physical and chemical properties and on surface and subsurface colors were similar to those determined by surface reflectance. The identification of soil-landscape relationships was fundamental to understand the genesis and distribution of the soils, which had similar chemical and physical properties to their parent materials. The analysis of clusters based on soil surface reflectance proved efficient in determining groups of soil classes with similar properties. Surface reflectance data were related to the soil surface and subsurface properties determined by traditional soil sample analyses, since the two approaches formed similar groups. The simultaneous interaction of soil properties was assessed by MIRS analysis, while the second derivative of the KM function adequately quantified the mineralogy of the spectra.

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Section: Morphological Aspectsmentioning

confidence: 99%

Surface Spectroscopy of Oxisols, Entisols and Inceptisol and Relationships with Selected Soil Properties

Poppiel

Lacerda

Oliveira

et al. 2018

Rev. Bras. Ciênc. Solo

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“…According to Schwertmann (1971), red, yellow and brownish-red colors are determined by the different forms of Fe oxides in the soil. In a study about the influence of rock on soil, Lacerda et al (2008) described a reddish color with hue of 2.5YR or even redder in the textural B horizon of a Chernossolo Argilúvico (Mollisol) derived from gabbro. The authors attributed this pattern to the parent material that favored hematite formation.…”

Section: Morphological Attributesmentioning

confidence: 99%

“…In most studies, however, the relationships found between soil attributes and parent materials are generic, encompassing general groups of rocks and lacking petrological assessment. The relationship between soil classes and geomorphological units must be evaluated as well, given the important role of relief in pedogenesis (Lacerda et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Genesis of Soils Formed from Mafic Igneous Rock in the Atlantic Forest Environment

Santos

Pereira

Anjos

et al. 2016

Rev. Bras. Ciênc. Solo

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Different parent materials participate in the formation of soils in the hilly landscape of "Mar de Morros" in the Atlantic Forest environment. Those derived from mafic igneous rock (gabbro) frequently show erosion problems because of land use, which is aggravated by the mountainous relief and soil attributes. This study evaluated the main pedogenic processes of soils formed from mafic igneous rock (gabbro) in a toposequence in Pinheiral (RJ) by characterizing physical, chemical, mineralogical and micromorphological attributes. The profiles are located at different sections in the toposequence: summit (P1), shoulder (P2), backslope (P3) and footslope (P4).They were classified according to the Brazilian System of Soil Classification (SiBCS) and correlated to Soil Taxonomy. The soil morphology of profiles P2, P3 and P4 is expressed by a brownish-red color, blocky structure with high to moderate development, clay films and clay loam to clay texture, with a textural B horizon. P1 shows less development, with a shallow profile and the sequence of horizons A-C-Cr. The soils have a slightly low degree of weathering, identified by the presence of pyroxenes and feldspars in the sand fraction and montorillonite in the clay fraction; the sum of bases is from 15 to 24 cmol c kg -1 ; and cation exchange capacity (CEC) is from 12 to 22 cmol c kg -1. A significant presence of clay skins was observed in the field and was confirmed by thin section analysis, which showed features such as argillans, ferriargillans and iron nodules. The soil profile at the summit (P1) was classified as Neossolo Regolítico Órtico (Typic Udorthents), and the other profiles as Chernossolo Argilúvicos Órticos (Typic Argiudolls).

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“…Severe erosion cases occur most frequently in moderate resistance parent material and slope of > 30% [4]. Understanding the parent materials also provides information on the physical, chemical and mineralogical characteristics of soils [5]. There are strong links between soil composition and geochemical processes such as weathering and major, minor and trace elements [6].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Classification of Some Soils Formed on Ophiolitc Rocks in Al-Bassit Region /Northwestern Syria

Ghanem,

Ibrahim

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The aim of this study is to characterize and classify soils formed from ophiolitic rocks (mafic and ultramafic) by determining their morphological, physical and chemical properties, petrographic and elemental composition studies. The profiles were prepared under forest vegetation (pines) and described based on the referenced methods in Al-Bassit region (NW Syria) between the coordinates: N: 35° 41` - N: 35° 57`, E: 35° 42` - E: 36° 05`, which belongs to Mediterranean climate regime. Samples were collected from horizons of all profiles and some physical and chemical analyses were performed in addition to petrographic and Chemical composition studies. The horizons were of the form A (Mollic)-Cr-R in profile P1, and A (Mollic)-BW-C- in the profile P2, and of the form A ((Mollic)-C1-Cr2- in the profile P3. They were ordered as: A(Ochric)-C1-C2 in the profile P4. The fires that took place in the region affected the characteristics of surface horizons of some soils, such as the percentage of organic matter, structure, and the degree of soil interaction .The ultramafic derived soils in the P1 profile contained a high level of clay, while the percentage of sand increased in mafic derived soil P2, P4. The soil contained high levels of exchangeable Ca+2 and Mg+2, likely because they are in the structure of the rock. Carbonates are in low levels and are absent in some horizons, this is due to the composition of the parent material. The soil classification for studied profiles show that the profiles (P1, P2, P3) classified as Mollisols and the Profile P4 as Entisols.

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Estudo da relação pedomorfogeológica na distribuição de solos com horizontes B textural e B nítico na paisagem de Lavras (MG)

Cited by 7 publications

References 6 publications

Surface Spectroscopy of Oxisols, Entisols and Inceptisol and Relationships with Selected Soil Properties

Surface Spectroscopy of Oxisols, Entisols and Inceptisol and Relationships with Selected Soil Properties

Genesis of Soils Formed from Mafic Igneous Rock in the Atlantic Forest Environment

Characterization and Classification of Some Soils Formed on Ophiolitc Rocks in Al-Bassit Region /Northwestern Syria

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