SciELO - Scientific Electronic Library Online

 
vol.34 número4Quantificação e utilização das frações húmicas como característica diferencial em horizontes diagnósticos de solos BrasileirosAvaliações visuais como índice de qualidade do solo e sua validação por análises físicas e químicas em um latossolo vermelho distroférrico com usos e manejos distintos índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Revista Brasileira de Ciência do Solo

versão On-line ISSN 1806-9657

Resumo

SOUZA, Rômulo Vinícius Cordeiro Conceição de et al. Soil characterization along a climatic gradient in the triunfo mountain range, semi-arid region of pernambuco state, Brazil. Rev. Bras. Ciênc. Solo [online]. 2010, vol.34, n.4, pp.1259-1270. ISSN 1806-9657.  http://dx.doi.org/10.1590/S0100-06832010000400024.

Highland forests in mountains of Northeast Brazil are islands of humid Atlantic forest in the midst of the semi-arid region. The climatic conditions are rather atypical, improved by the occurrence of orographic rainfall, which can reach 1,200 mm per year. In the state of Pernambuco, most of the scientific studies in these humid highland forests are focused on botanical and zoological aspects only, with very little information about soils. Aiming to study the soils of the humid mountains in the semi-arid region and to evaluate the influence of the various soil-forming factors on formation and evolution, three soil profiles were characterized for morphological, physical, chemical, and mineralogical properties in the Triunfo mountain range, at different altitude levels. The soil profiles were located in the municipalities of Serra Talhada (P1), Santa Cruz da Baixa Verde (P2) and Triunfo (P3), along a moisture and altitude gradient (topo-climatic sequence). The soils were morphologically similar, due to the low development degree, mainly in the soil profiles P3 (Triunfo) and P2 (Santa Cruz), classified, respectively, as Oxic Haplustept and Typic Haplustept. In the lower part of profile P1 (Serra Tallhada), a low clay content and greater textural gradient classified the soil as Typic Haplustult. The results showed that all studied soils were developed from syenitic rocks, with influence of sediments from the upper part of the relief. The development degree of the soil of Triunfo, with the highest rainfall levels, was higher than of the others. Climate, acting mainly by the variation in moisture, was however not the only soil forming factor responsible for soil differentiation along the sequence, but parent material and relief were important as well.

Palavras-chave : inceptisols; humid highland forest; pedogenesis; iron oxides.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons