Clima e Intemperismo na Formação dos Solos do Rio Grande do Sul, Brasil (Climate and Weathering the Formation of the Soils in Rio Grande do Sul State, Brazil)
DOI:
https://doi.org/10.26848/rbgf.v5i1.232751Keywords:
Rocha, temperatura, precipitação pluvialAbstract
Neste estudo objetivou-se determinar a influência das disponibilidades climáticas na variação do tipo de intemperismo e na formação dos solos do Rio Grande do Sul-Brasil. Foram utilizados três modelos matemáticos para determinar as características do intemperimo. No cálculo e representação gráfica dos modelos utilizou-se as médias anuais de temperatura e de precipitação pluvial de 41 estações meteorológicas pertencentes ao 8º Distrito de Meteorologia (8º DISME), período 1931-1960. Constatou-se que, segundo os modelos de intemperismo, os solos do Estado são submetidos à condições de zonas temperadas quentes, que favorecem o intemperismo químico e as condições de alteração e de lixiviação típicas da zona de monossialitização.
Palavras-chave: rocha, temperatura, precipitação pluvial.
Climate and Weathering the Formation of the Soils in Rio Grande do Sul State, Brazil
ABSTRACT
The objective of this study was to determine the influence of climate on the variation of the type of weathering and on the formation of the soils in Rio Grande do Sul State – Brazil. Three numerical models were used to determine weathering characteristics. Data of average annual temperature and average total annual rainfall from 1931 to 1960 from 41 meteorological stations of the 8° Brazilian National Service (8° DISME) were used. Results showed that for the weathering models, soils of this State are exposed to climatic conditions of hot temperate climates, which favor chemical weathering and the conditions for alteration and lixiviation typical of the monossialitization zone.
Keywords: rock, temperature, rainfall.
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Copyright (c) 2012 Elsbeth Léia Spode Becker, Galileo Adeli Buriol, Nereu Augusto Streck
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