Relações pedomorfogeológicas e distribuição de pedoformas na estação ecológica de águas emendadas, Distrito Federal

Lacerda, Marilusa Pinto Coelho; Barbosa, Inara Oliveira

doi:10.1590/s0100-06832012000300003

Cited by 11 publications

(23 citation statements)

References 8 publications

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“…The sum of bases (S), cation exchange capacity (CEC), and base saturation (V%) were very low, featuring dystrophic soils. The contents of OM (organic matter) and OC (organic carbon) were high in most soils, as they occurred in areas of native vegetation, confirming observations of Barbosa et al (2009), Campos et al (2010, and Lacerda and Barbosa (2012).…”

Section: Physical and Chemical Propertiessupporting

confidence: 80%

“…Absence of gibbsite was identified, by the missing absorption feature at 2,265 nm, confirming the lower weathering degree of these soils (Figure 8b) (Santos et al, 2013). Adsorption features of hydroxyl groups (1,400 and 1,900 nm) and 2:1 clay minerals (1,900 nm) were observed (Figure 8), due to the occurrence of sparse illite in these soils, as described by Barbosa et al (2009), Campos et al (2010, and Lacerda and Barbosa (2012). Some of these 2:1 clay minerals have additional absorption features centered at approximately 2,450 nm (Grove et al, 1992).…”

Section: Interpretation Of Surface Spectramentioning

confidence: 96%

“…The soils evolved from FFc, due to differentiated conditions of erosion and pedogenesis, under the influence of the lithology of the Canastra and Bambuí Groups and local variations in relief features. Therefore, the occurrence of FFc is extremely important for the geomorphological and pedological development in the Jardim River basin, a fact given little attention in studies dealing with pedomorphogeological relations on the Central Plateau of Brazil, e.g., Motta et al (2002), Barbosa et al (2009), Campos et al (2010, and Lacerda and Barbosa (2012), among others.…”

Section: Study Site and Physical Environmentmentioning

confidence: 99%

“…In studies on pedomorphogeological relations and distribution of pedomorphs in the DF, Lacerda and Barbosa (2012) observed the presence of Cambissolo Háplico (CX) in the steepest portions of the terrain (slope ≥45 %) and Gleissolo Háplico (GX) on the floodplain with slopes between 0 to 2 %. In the region of Santa Maria, Rio Grande do Sul, Araújo…”

Section: Classification Of Soils and Physical Environmentmentioning

confidence: 99%

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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: Physical and Chemical Propertiessupporting

confidence: 80%

Section: Interpretation Of Surface Spectramentioning

confidence: 96%

Section: Study Site and Physical Environmentmentioning

confidence: 99%

Section: Classification Of Soils and Physical Environmentmentioning

confidence: 99%

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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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“…Tal distribuição ocorre de forma homogênea tanto em profundidade quanto lateralmente na encosta sobre os solos derivados do intemperismo de rochas ricas em minerais ferro-magnesianos, como basalto/diabásio, da Formação Serra Geral (Ker, 1997;Galinkin, 2003;Lacerda & Barbosa, 2012). Resultados similares foram observados em solos do Planalto Central Goiano, onde solos profundos e argilosos apresentaram distribuição espacial semelhante à verificada neste estudo, com a presença de Latossolos nos topos aplainados variando lateralmente para Plintossolos em condições de hidromorfia (Motta et al, 2002).…”

Section: Resultsunclassified

Erosão hídrica em solos cultivados e sob mata ciliar

Momoli

Cooper

2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi identificar atributos dos solos e de sedimentos como instrumentos para determinação dos impactos decorrentes da erosão hídrica, bem como propor redução do sobreúso dos solos no Cerrado goiano. Solos e sedimentos da mata ciliar do Córrego Ponte Nova, bem como do cultivo de soja a montante foram avaliados por micromorfometria quanto à morfologia, à granulometria e à porosidade. Na encosta cultivada, o solo foi classificado como Latossolo Vermelho distroférrico, e, na mata ciliar de vereda, como Plintossolo Pétrico Concrecionário êutrico e Gleissolo Melânico Tb distrófico típico. Solos e sedimentos foram predominantemente argilosos, e a fração argila encontrava-se naturalmente agregada em partículas maiores, de tamanho silte e areia. Análises morfológicas, granulométricas e de porosidade, por micromorfometria, possibilitaram distinguir os sedimentos dos solos soterrados, pela diferenciação de coloração, textura e porosidade. Elevada concentração de agregados de argila tamanho areia no Gleissolo Melânico sugere a remoção seletiva de partículas finas, o que indica erosão no solo sob a mata ciliar. A elevada deposição de sedimentos sobre os solos da mata ciliar compromete a função de filtro do solo e também a perpetuidade e a regeneração da floresta por causa do soterramento de sementes e plântulas.Termos para indexação: erosão, impactos ambientais, micromorfometria, planejamento agrícola, sedimentos. Water erosion on cultivated soil and soil under riparian forestAbstract -The objective of this work was to identify attributes of soil and of sediments as a tool to determine the impacts from water erosion, as well as to propose reducing the overuse of the soil in the Cerrado, in the state of Goiás, Brazil. Soils and sediments from the riparian forest of the Ponte Nova Stream and from upstream soybean crop areas were evaluated by micromorphometrics as to morphology, particle size, and porosity. Rhodic Oxisol was present in the cultivated hillside, and Petroferric Oxisol and Typic Eutraquox, in the riparian forest path. Soils and sediments were predominantly clayed, and the clay fraction was naturally aggregated into larger particles of silt and sand sizes. Analyses of morphological atributes, particle size, and porosity -by micromorphometrics -allowed to distinguish the sediment of buried soils by color, texture, and porosity differentiation. The high concentration of sandy-sized clay aggregates in Typic Eutraquox suggests the selective removal of fine particles, indicating soil erosion under the riparian forest. The high sediment deposition on the riparian forest soils is a risk to the soil filter function, and also to the perpetuity and regeneration of the forest because of the burial of seeds and seedlings.

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Soil–landscape relationship in a sandstone-gneiss topolithosequence in the State of Amazonas, Brazil

et al. 2021

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Relações pedomorfogeológicas e distribuição de pedoformas na estação ecológica de águas emendadas, Distrito Federal

Cited by 11 publications

References 8 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

Erosão hídrica em solos cultivados e sob mata ciliar

Soil–landscape relationship in a sandstone-gneiss topolithosequence in the State of Amazonas, Brazil

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