Toposequences
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Termite Mounds Effects on Soil Properties in the Atlantic Forest Biome
ABSTRACT Termites have peculiar activities in the soil, inducing significant changes in the soil properties. The objective of this study was to assess physical and chemical properties and soil organic matter to evaluate the effect of termite activity and termite mounds on the soil. Two toposequences were selected and divided in slope thirds (shoulder, backsl
Rev. Bras. Ciênc. Solo. Publicado em: 08/03/2018
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2. Clay Mineralogy of Basaltic Hillsides Soils in the Western State of Santa Catarina
ABSTRACT A commonly accepted concept holds that highly fertile, shallow soils are predominant in the Basaltic Hillsides of Santa Catarina State, in southern Brazil, but their agricultural use is restricted, either by excessive stoniness, low effective depth or steep slopes. Information about soil properties and distribution along the slopes in this region is
Rev. Bras. Ciênc. Solo. Publicado em: 22/02/2018
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3. Surface Spectroscopy of Oxisols, Entisols and Inceptisol and Relationships with Selected Soil Properties
ABSTRACT: 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 t
Rev. Bras. Ciênc. Solo. Publicado em: 01/02/2018
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4. Characterization and Classification of Soils under Forest and Pasture in an Agroextractivist Project in Eastern Amazonia
ABSTRACT: Knowledge of soils in the Amazon rainforest is becoming increasingly essential due to dynamics adopted by farmers that substitute forest for pastures, together with growing pressure from diverse segments of society towards adoption of sustainable production systems. The objective of this study was to characterize the soils along two toposequences,
Rev. Bras. Ciênc. Solo. Publicado em: 15/12/2016
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5. Carbon pool ratios as scientific support to field morphology in the differentiation of dark subsurface soil horizons
In soil surveys, it is usual to find profiles with an uncommon disposition of horizons. Dark horizons in depth might be either the consequence of erosion and redeposition of soil materials from upslope or an indication of the podzolization process, which forms a spodic horizon. Few laboratory analyses are known to characterize dark subsurface horizons which
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-08
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6. Hydro-physical characterization of soils under tropical semi-deciduous forest
The study of the hydro-physical behavior in soils using toposequences is of great importance for better understanding the soil, water and vegetation relationships. This study aims to assess the hydro-physical and morphological characterization of soil from a toposequence in Galia, state of São Paulo, Brazil). The plot covers an area of 10.24 ha (320 × 320
Scientia Agricola. Publicado em: 2012-04
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7. CaracterizaÃÃo da cobertura superficial em encosta na Bacia do Rio das Pombas, Guarapuava â PR: bases para entendimento da gÃnese erosiva em tÃneis / Characterization of hillside superficial covering at the basin of Rio das Pombas, Guarapuava, Paranà state: basis for understading of tunnel erosion genesis
On the Guarapuava Plateau/Palmas, in a low slope hillside of superficial covering from basaltic origins, on the right bank of the Rio das Pombas, Paranà state, processes of tunnel erosion (pipes) were identified. These are subsuperficial erosion processes with typical features, such as subsidence of the tunnel roof and rebate structures, which tend to evolv
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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8. Técnicas espectroscópicas e atributos do terreno no mapeamento digital de solos / Spectroscopic techniques and terrain attributes on digital soil mapping
O conhecimento dos atributos do solo e de sua variabilidade espacial são essenciais para a aplicação de um manejo racional, promovendo altas produtividades e baixo impacto ambiental. Dentre as informações mais utilizadas para o planejamento e tomadas de decisão na atividade agrícola, observa-se o mapa pedológico. Este indica de maneira simplificada u
Publicado em: 2011
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9. Mineralogy, micromorphology, genesis and classification of Luvisols e Planosols developed from metamorphic rocks in the semi-arid of Brazilian Northeast / Mineralogia, micromorfologia, gênese e classificação de Luvissolos e Planossolos desenvolvidos de rochas metamórficas no semi-árido do Nordeste brasileiro
The semi-arid areas of Northeast Brazil have approximately 750,000 km2, corresponding to 60% of the total region extension. In this bioclimatic domain, exception for the sedimentary Paleo/Mesozoic areas, the soils have small poor to moderate development degree and are classified as Neosols, Luvisols and Planosols, sometimes surveyed as soil associations, in
Publicado em: 2007
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10. Dados radiométricos obtidos nos níveis terrestres e orbital na avaliação de solos. / Radiometric data obtained by terrestrial and orbital levels in the evaluation of soils.
The agricultural areas are becoming more and more technified, where the knowledge of the physical, chemical and mineralogical characteristics of soils becomes indispensable to maximize crop productivity. Brazil possesses a great territorial extension, and most of the areas do not possess soil maps compatible with the agricultural needs. Modern technological
Publicado em: 2002
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11. Ecology of Soil Arthrobacters in Clarion-Webster Toposequences of Iowa
Toposequence variations in soil properties were characterized and related to variations in populations of total isolatable bacteria and arthrobacters. Increases in soil NO3-N, available phosphorous, NO3-N-producing power, Arthrobacter counts, and the percentage of the total counts represented by arthrobacters were correlated with decreases in soil acidity. T