Consulta: subjectFacets:"Soil water flow"
Registros recuperados: 3
Data/hora: 08/06/2024 18:34:20

Simulation of moisture profiles in a Latossol in Dourados region, in the State of Mato Grosso do Sul, Brazil
Provedor de dados: 70
Autores: Scorza Júnior,Rômulo P.; Silva,João P. da; Rigitano,Renê L. de O.
The understanding of unsaturated soil water flow at process-level is essential to develop proper management actions for environmental protection in agricultural systems. One important tool for simulation of soil water flow that has been used worldwide is the SWAP model. The aim of this work was to test and to calibrate the SWAP model by inverse modeling to describe moisture profiles in a Brazilian very clayey Latossol in Dourados, State of Mato Grosso do Sul, Brazil. The SWAP model was tested in an experimental field of 0.09 ha cultivated with soybean and soil profiles were sampled eight times between December 2006 and October 2007. The SWAP input values (i.e. soil water retention curves and meteorological data) were based on in-situ measurements....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil water flow; SWAP; Inverse modeling.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162010000100003

Savanna woodland soil micromorphology related to water retention
Provedor de dados: 63
Autores: Juhász,Carlos Eduardo Pinto; Cooper,Miguel; Cursi,Patrícia Ribeiro; Ketzer,André Oppitz; Toma,Raul Shiso.
The limiting factors of the Brazilian savanna physical environment have been largely discussed. Soil morphology is fundamental to understand the behavior of soil water flow, soil physical properties and soil-landscape relationships. The aim of this study is to relate soil micro and macromorphologic attributes to soil water retention on a toposequence under native savanna woodland (cerradão) in a permanent plot of 320 m &lt;FONT FACE=Symbol&gt;´&lt;/FONT&gt; 320 m installed in Assis, SP, Brazil. Samples collected at five points within the toposequence were used to determine the soil macroporosity by means of image analyses, estimated total porosity, chemical analysis, particle size distribution analysis and soil water retention. From the summit down to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian savanna; Soil porosity; Soil water flow; Soil physical quality; Toposequence.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400005

Soil water dynamics and litter production in eucalypt and native vegetation in southeastern Brazil
Provedor de dados: 63
Autores: Silva,Paulo Henrique Muller da; Poggiani,Fabio; Lima,Walter de Paula; Libardi,Paulo Leonel.
High productivity of eucalypt plantations is the result of advances in research that have led to gradual improvements in intensive silvicultural technology. High productivity notwithstanding, eucalypt plantations remain the focus of environmental concerns. Our study aimed to compare the soil water regime, litter fall and nutrients dynamics either in a fragment of native forest or in an adjacent stand of growing eucalypt. We took field measurements during the first three years of eucalypt plantation in a sandy soil in the southeastern region of Brazil. Soil moisture and internal drainage were higher during the early stages of growth of the eucalypt stand, as compared with native vegetation. However, one and a half years after planting, available soil water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Initial growth; Soil water flow; Soil solution; Nutrient cycling.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000500005