relações solo-paisagem no quadrilátero ferrífero em minas gerais soil-landscape relationships at the quadrilátero ferrífero in the state of minas gerais, brazil
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2010
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Abstract
O objetivo deste trabalho foi caracterizar os solos de uma área representativa do Quadrilátro Ferrífero, em Minas Gerais, e avaliar suas relações com os principais componentes do meio natural. Sete unidades de paisagem (pedoambientes) distintas foram identificadas - Depressão do Paraopeba, Serras Itabiríticas, Platô da Moeda, Vale do Rio das Velhas, Gandarela, Vale do Conceição e Serra do Caraça -, cujos aspectos relacionados a solos em suas interrelações com os componentes do meio natural foram descritos. Sob a influência de grande variabilidade litólógica, em conexão com um longo período de evolução geomorfológica, a região é marcada por acentuados contrastes topográficos. Há domínio de solos pouco evoluídos (Cambissolos e Neossolos Litólicos), de baixa fertilidade natural, não obstante a acentuada diferenciação da vegetação nativa, representada por formações campestres lado a lado à floresta. Em algumas áreas é expressiva a ocorrência de afloramentos rochosos. É marcante a influência do material de origem nas características dos solos, com destaque para o conjunto de solos relacionados a rochas ferríferas, distinguidos pelos teores de óxidos de ferro muito elevados e intensa cor vermelha. A presença de concreções ferruginosas é também muito comum nesses solos. A ocorrência de Latossolos Vermelhos perférricos, desprovidos de pedregosidade, está associada principalmente a formações pedimentares nas adjacências das Serras Itabiríticas.
The objective of this work was characterize the soils of a typical area of the Quadrilátero Ferrífero, Minas Gerais, Brazil, and to evaluate the relationships between these soils and the main components of the natural ambience. Seven distinct landscape units were identified - Depressão do Paraopeba, Serras Itabiríticas, Platô da Moeda, Vale do Rio das Velhas, Gandarela, Vale do Conceição, Serra do Caraça - whose aspects related to soils and their relationships with the components of the natural ambience were described. Under the influence of a great lithologic variability, in connection with a large period of geomorphologic evolution, the region is marked by strong topographic contrasts. There is a dominance of young soils (Cambisols and Litholic Neosols), showing low natural fertility, despite the marked differentiation of native vegetation, represented by tropical grassland formations side by side to the forest. In some areas, rocky outcrops are outstanding. The influence of the parent material on soil characteristics is remarkable, especially on the soil groups related to iron rocks, which are discernible by their very high iron oxide contents and their intense red color. The presence of ferruginous concretions is also very common in this soils. The occurrence of perferric soils (Oxisols), without coarse fragments, is associated to the pediment formation at the Serras Itabiríticas vicinity.
The objective of this work was characterize the soils of a typical area of the Quadrilátero Ferrífero, Minas Gerais, Brazil, and to evaluate the relationships between these soils and the main components of the natural ambience. Seven distinct landscape units were identified - Depressão do Paraopeba, Serras Itabiríticas, Platô da Moeda, Vale do Rio das Velhas, Gandarela, Vale do Conceição, Serra do Caraça - whose aspects related to soils and their relationships with the components of the natural ambience were described. Under the influence of a great lithologic variability, in connection with a large period of geomorphologic evolution, the region is marked by strong topographic contrasts. There is a dominance of young soils (Cambisols and Litholic Neosols), showing low natural fertility, despite the marked differentiation of native vegetation, represented by tropical grassland formations side by side to the forest. In some areas, rocky outcrops are outstanding. The influence of the parent material on soil characteristics is remarkable, especially on the soil groups related to iron rocks, which are discernible by their very high iron oxide contents and their intense red color. The presence of ferruginous concretions is also very common in this soils. The occurrence of perferric soils (Oxisols), without coarse fragments, is associated to the pediment formation at the Serras Itabiríticas vicinity.
| Reference Key |
filho2010pesquisarelaes
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|---|---|
| Authors | ;Amaury de Carvalho Filho;Nilton Curi;Edgar Shinzato |
| Journal | proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006 |
| Year | 2010 |
| DOI |
10.1590/S0100-204X2010000800017
|
| URL | |
| Keywords | Keywords not found |
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