Relação entre atributos do terreno, material de origem e solos em uma área no noroeste do estado do Rio de Janeiro

Chagas, C. da S.; Filho, Elpídio Inácio Fernandes; Bhering, S. B.

doi:10.1590/s1982-45132013000100012

Cited by 10 publications

(12 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Factors such as position in the landscape and depth were reported by farmers in defining environments with good or low soil quality; for them, soils located in less sloping areas are more productive because they are deeper and less susceptible to the erosive process. The different depths are determined by the curvature of the land, and, characteristically, ecosystems are directly controlled by the topography of the terrain, which, in turn, influences characteristics such as surface runoff (Chagas et al, 2013). According to a farmer's narrative, "where the soil is deeper, it produces better" (Audeh et al, 2011;Correia et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

Ethnopedological Studies to Characterize Neosols at the Brazilian Semiarid Region

Silva¹,

Portela²,

Dias³

et al. 2019

JAS

View full text Add to dashboard Cite

The ethnopedological approach to soil characterization presents great challenges, since the understanding of the systems occurs through the knowledge acquired by the man in his coexistence with agroecosystems. The aim of the present research was to characterize the agricultural soils through morphological, physical and chemical analysis, using ethnopedological studies in the ‘Santa Agostinha’ Settlement Project, Caraúbas-RN, Brazil. Five areas were defined for study in the soil/landscape relation: i) area with cashew cultivation; ii) area of pasture; iii) area of crops in consortium; iv) agroforestry; and v) preserved forest, used as the reference. Participatory workshops, exchanges and classifications (from the locals and formal) were carried out with the analysis of the morphological, physical and chemical attributes of the studied soils in the layers of 0.00-0.10, 0.10-0.20 and 0.20-0.30 m. The results of the ethicist classification, based on the attributes evaluation were: Quartzarenic latosol NEOSOL (cashew area); Regolitic euthrofic NEOSOL (pasture area); Ortic quartzarenic fragiudult NEOSOL (intercropping area); typical quartzarenic ortic NEOSOL (agroforestry area and typical hydromorphic quartzarenic NEOSOL that presented a close relation with the emicist classification (from the local people). The observation of the different soil types in the landscape, due to the stratification of the environments, allowed the growers to identify characteristics associated with soil potentials and restrictions and, consequently, the correct management to be adopted. The experiences of local growers in the participatory workshops provided an exchange of popular and scientific knowledge, as well as new perspectives of coexistence with the semiarid.

show abstract

Section: Resultsmentioning

confidence: 99%

Ethnopedological Studies to Characterize Neosols at the Brazilian Semiarid Region

Silva¹,

Portela²,

Dias³

et al. 2019

JAS

View full text Add to dashboard Cite

show abstract

“…As a general rule, deeper and more evolved soils generally occur on convex slopes, while shallower (saprolitics) and less evolved soils tend to occur on concave slopes (Chagas et al, 2013). The shape (curvature) and orientation (solar radiation incidence) of slopes are important in pedogenesis, for directly affecting the air and soil temperature level, evapotranspiration and soil moisture, as well as other important soil properties (Senthilkumar et al, 2009;Camargo et al, 2010;Oliveira et al, 2013).…”

Section: Classification Of Soils and Physical Environmentmentioning

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

View full text Add to dashboard Cite

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.

show abstract

“…Basicamente, os principais dados na geomorfometria são parâmetros e objetos extraídos de Modelos Digitais de Elevação (MDE), que são utilizados para diferentes propósitos, tais como: classifi cação das Formas de Terreno (FT) (DRAGUT e EISANK, 2011;EHSANI e QUIEL 2008EHSANI et al, 2010;SAHA et al, 2011;VASCONCELOS et al, 2012), delimitação e classifi cação de bacias de drenagem (MENKE et al, 2013;OLIVEIRA et al, 2007;SODRÉ et al, 2007), movimentos de massa GUIMA-RÃES et al, 2009), mapeamento de solos (BARBIERI et al, 2008;CAMARGO et al, 2010;CHAGAS et al, 2013;LEÃO et al, 2011), detecção de fi tofi sionomias (BISPO et al, 2010;CARVALHO JÚNIOR et al, 2008;COUTO JÚNIOR et al, 2010;FONSECA e SILVA JÚNIOR, 2004), entre vários outros propósitos.…”

Section: Introductionunclassified

Comparação Dos Métodos De Classificação Por Ângulo Espectral E Distância Euclidiana No Mapeamento Das Formas De Terreno

Sena-Souza

Júnior

Martins

et al. 2016

Rev. Bras. Geomorfol.

View full text Add to dashboard Cite

A classificação supervisionada por assinaturas geomorfométricas é um procedimento que pode auxiliar no mapeamento de formas de terreno a partir da utilização de medidas de similaridade ou distância. Este trabalho tem como objetivo comparar os métodos supervisionados de classificação a partir de medidas de similaridade e distância para o mapeamento do relevo. A comparação foi realizada no Campo de Instrução Militar de Formosa (GO), seguindo os seguintes passos: aquisição de dados HydroSHEDS, geração de imagens de curvatura, seleção de assinaturas geomorfométricas; classificação formas de terreno usando o método de classificação por ângulo espectral (SAM) e a distância euclidiana (DE); comparação da classificação através da matriz de tabulação cruzada, análise de modelo de elevação em 3D, avaliação da média e do desvio padrão das curvaturas para cada classe mapeada e observação em campo. A seleção de assinaturas geomorfométrica considerou as seguintes etapas: (a) redução dos atributos geomorfométricos pela transformação de Fração Mínima de Ruído (MNF); (b) redução espacial pelo Índice de Pureza de Pixel (PPI); e (c) a seleção manual pelo n-Dimensional Visualizador. O processo de classificação adotou 14 AGs que descrevem dois comportamentos: Tipo 1 quando a curvatura longitudinal tem um valor maior que a curvatura transversal; e Tipo 2 quando ocorre o inverso. O processo foi simplificado para seis classes de formas de terreno (FT): Convexo/Convexo (Cx/Cx); Côncavo/Convexo (Cc/Cx); Côncavo/Côncavo (Cc/Cc); Côncavo/Retilíneo (Cc/Rt); Convexo/Retilíneo (Cx/Rt); Retilíneo/Retilíneo (Rt/Rt). No mapeamento SAM, as formas de relevo predominantes são Cc/Rt, Cx/Rt e Cc/Cx, indicando uma heterogeneidade com muitas áreas de transição e côncavas. A classificação a partir da DE mostrou prevalência de feições retilíneas (Rt/Rt). Apesar disso, essa FT apresentou os menores desvios e valores médios próximos de zero para todas as curvaturas, indicando que a DE foi o método mais eficiente para o mapeamento das áreas retilíneas.

show abstract

Relação entre atributos do terreno, material de origem e solos em uma área no noroeste do estado do Rio de Janeiro

Cited by 10 publications

References 20 publications

Ethnopedological Studies to Characterize Neosols at the Brazilian Semiarid Region

Ethnopedological Studies to Characterize Neosols at the Brazilian Semiarid Region

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

Comparação Dos Métodos De Classificação Por Ângulo Espectral E Distância Euclidiana No Mapeamento Das Formas De Terreno

Contact Info

Product

Resources

About