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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

SOIL FUNCTIONING IN A TOPOSEQUENCE UNDER RAINFOREST IN SAO PAULO, BRAZIL

Texto completo
Autor(es):
Cooper, Miguel [1] ; Medeiros, Joao Carlos [2] ; Dalla Rosa, Jaqueline [2] ; Soria, Jose Eduardo [3] ; Shiso Toma, Raul [4]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Dept Ciencia Solo, Escola Super Agr Luiz de Queiroz, BR-13418900 Piracicaba, SP - Brazil
[2] Embrapa Arroz & Feijao CNPAF, BR-75375000 Santo Antonio De Goias, Go - Brazil
[3] Ctr Tecnol Canavieira, BR-13400970 Piracicaba, SP - Brazil
[4] Univ Nacl Rio Cuarto, Cordoba - Argentina
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: Revista Brasileira de Ciência do Solo; v. 37, n. 2, p. 392-399, MAR-APR 2013.
Citações Web of Science: 4
Resumo

Studies of soil-water dynamics using toposequences are essential to improve the understanding of soil-water-vegetation relationships. This study assessed the hydro-physical and morphological characteristics of soils of Atlantic Rainforest in the Parque Estadual de Carlos Botelho, state of Sao Paulo, Brazil. The study area of 10.24 ha (320 x 320 m) was covered by dense tropical rainforest (Atlantic Rainforest). Based on soil maps and topographic maps of the area, a representative transect of the soil in this plot was chosen and five soil trenches were opened to determine morphological properties. To evaluate the soil hydro-physical functioning, soil particle size distribution, bulk density (rho), particle density (rho(s)), soil water retention curves (SWRC), field saturated hydraulic conductivity (Ks), macroporosity (macro), and microporosity (micro) and total porosity (TP) were determined. Undisturbed samples were collected for micromorphometric image analysis, to determine pore size, shape, and connectivity. The soils in the study area were predominantly Inceptisols, and secondly Entisols and Epiaquic Haplustult. In the soil hydro-physical characterization of the selected transect, a change was observed in Ks between the surface and subsurface layers, from high/intermediate to intermediate/low permeability. This variation in soil-water dynamics was also observed in the SWRC, with higher water retention in the subsurface horizons. The soil hydro-physical behavior was influenced by the morphogenetic characteristics of the soils. (AU)

Processo FAPESP: 99/09635-0 - Diversidade, dinâmica e conservação de árvores em florestas do estado de São Paulo: estudos em parcelas permanentes
Beneficiário:Ricardo Ribeiro Rodrigues
Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Temático