SIMULATED AND MEASURED SPATIAL CONTRASTS OF SOIL-WATER RELATED PROPERTIES AT FIELD SCALE

Detalhes bibliográficos
Autor(a) principal: SANTOS, ANTONIO ODAIR
Data de Publicação: 2001
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Gaúcha (Online)
Texto Completo: http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/363
Resumo: The assessment of the hydraulic properties of soils is an important aspect to consider when dealing with the soil-water phenomena, particularly its behavior at field sente when data coverage is needed for the feeding of integrated modeling purposes, or if any aspect of water management is treated. At field scale, it is importam to knowyhe spatial behavior of water transfer/retention conditions and related soifparameters as well as the ones that should be sampled for soil-water description. Difficulties for "in situ" determination brings simulation of hydraulic parameters as a natural choice for data coverage in large arcas (at least approximated data, since they have, in most cases, a complex behavior). An experiment was carried out in Angatuba, Sao Paulo, Brazi I (23°33'S; 48°.18'W; 670m) and intensive soim sampling was done in a regular grid, covering a 40 ha field, in order lo study spatial contrasts of hydraulic properties and related easy-measured soim parameters. Simulations for soil-water were done based upon the pore size distribution model and pedrotransfer functions. Results from the field scale observations have shown poi nt-by-point differences in the characteristics of soil permeability, particularly near saturation. Spatial anal ysi s h as shown low coefficient of variation values and lack of strong spatial autocorrelation, for ali soim properties analyzed.
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spelling SIMULATED AND MEASURED SPATIAL CONTRASTS OF SOIL-WATER RELATED PROPERTIES AT FIELD SCALECONTRASTES ESPACIAIS DE VARIÁVEIS DA ÁGUA NO SOLO OBTIDOS POR MEDIÇÃO E MODELAGEM EM ESCALA DE CAMPOSoum physics, soim- hydraulic functionsFísica do solo, propriedades hidráulicas do solo.The assessment of the hydraulic properties of soils is an important aspect to consider when dealing with the soil-water phenomena, particularly its behavior at field sente when data coverage is needed for the feeding of integrated modeling purposes, or if any aspect of water management is treated. At field scale, it is importam to knowyhe spatial behavior of water transfer/retention conditions and related soifparameters as well as the ones that should be sampled for soil-water description. Difficulties for "in situ" determination brings simulation of hydraulic parameters as a natural choice for data coverage in large arcas (at least approximated data, since they have, in most cases, a complex behavior). An experiment was carried out in Angatuba, Sao Paulo, Brazi I (23°33'S; 48°.18'W; 670m) and intensive soim sampling was done in a regular grid, covering a 40 ha field, in order lo study spatial contrasts of hydraulic properties and related easy-measured soim parameters. Simulations for soil-water were done based upon the pore size distribution model and pedrotransfer functions. Results from the field scale observations have shown poi nt-by-point differences in the characteristics of soil permeability, particularly near saturation. Spatial anal ysi s h as shown low coefficient of variation values and lack of strong spatial autocorrelation, for ali soim properties analyzed. A determinação de propriedades hidráulicas dos solos é um aspecto importante a se considerar na abordagem de fenômenos relacionados com a água no solo, sobretudo o comportamento destas variáveis em escala de campo, se um levantamento de dados em toda a área se faz necessário, para a alimentação de modelos e em caso de serem tratados aspectos do manejo da água. Em escala de campo é importante conhecer o comportamento espacial de propriedades hidráulicas do solo, assim como propriedades físicas relacionadas, sobretudo aquelas que são amostradas para descrição da água no solo. A dificuldade de determinações "in situ" de parâmetros hidráulicos do solo traz a simulação como uma escolha natural para o levantamento de dados em grandes áreas, ainda que como dados aproximados, considerando-se que propriedades hidráulicas apresentam, na maioria das vezes, comportamento complexo.•Um experimento foi conduzido em Angatuba (SP) (23°33'S; 48°18'W; 670m) onde uma amostragem intensiva de solo foi feita em uma malha quadrada, demarcada em 40 ha de área. Objetivou-se estudar contrastes espaciais de propriedades hidráulicas e de parâmetros físicos de fácil obtenção, relacionados com água no solo. Simulações de aspectos da água no solo foram feitas, sob utilização de modelos baseados na distribuição porosa do solo e funções de pedotransferência. Os resultados obtidos a partir de observações, na escala de campo, mostram diferenças pontuais nas características de permeabilidade, sobretudo próximo da saturação. A analise espacial revelou baixos coeficientes de variação, assim como ausência de forte autocorrelação espacial (dependência), para todas as propriedades estudadas. Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural2001-12-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/363Pesquisa Agropecuária Gaúcha; Vol 7 No 2 (2001): PESQ. AGROP. GAÚCHA; 211-219Pesquisa Agropecuária Gaúcha; v. 7 n. 2 (2001): PESQ. AGROP. GAÚCHA; 211-2192595-76860104-9070reponame:Pesquisa Agropecuária Gaúcha (Online)instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulinstacron:SEAPDRporhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/363/332SANTOS, ANTONIO ODAIR info:eu-repo/semantics/openAccess2020-08-08T21:31:58Zoai:ojs.revistapag.agricultura.rs.gov.br:article/363Revistahttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapagPUBhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/oaipag@agricultura.rs.gov.br||2595-76860104-9070opendoar:2020-08-08T21:31:58Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulfalse
dc.title.none.fl_str_mv SIMULATED AND MEASURED SPATIAL CONTRASTS OF SOIL-WATER RELATED PROPERTIES AT FIELD SCALE
CONTRASTES ESPACIAIS DE VARIÁVEIS DA ÁGUA NO SOLO OBTIDOS POR MEDIÇÃO E MODELAGEM EM ESCALA DE CAMPO
title SIMULATED AND MEASURED SPATIAL CONTRASTS OF SOIL-WATER RELATED PROPERTIES AT FIELD SCALE
spellingShingle SIMULATED AND MEASURED SPATIAL CONTRASTS OF SOIL-WATER RELATED PROPERTIES AT FIELD SCALE
SANTOS, ANTONIO ODAIR
Soum physics, soim- hydraulic functions
Física do solo, propriedades hidráulicas do solo.
title_short SIMULATED AND MEASURED SPATIAL CONTRASTS OF SOIL-WATER RELATED PROPERTIES AT FIELD SCALE
title_full SIMULATED AND MEASURED SPATIAL CONTRASTS OF SOIL-WATER RELATED PROPERTIES AT FIELD SCALE
title_fullStr SIMULATED AND MEASURED SPATIAL CONTRASTS OF SOIL-WATER RELATED PROPERTIES AT FIELD SCALE
title_full_unstemmed SIMULATED AND MEASURED SPATIAL CONTRASTS OF SOIL-WATER RELATED PROPERTIES AT FIELD SCALE
title_sort SIMULATED AND MEASURED SPATIAL CONTRASTS OF SOIL-WATER RELATED PROPERTIES AT FIELD SCALE
author SANTOS, ANTONIO ODAIR
author_facet SANTOS, ANTONIO ODAIR
author_role author
dc.contributor.author.fl_str_mv SANTOS, ANTONIO ODAIR
dc.subject.por.fl_str_mv Soum physics, soim- hydraulic functions
Física do solo, propriedades hidráulicas do solo.
topic Soum physics, soim- hydraulic functions
Física do solo, propriedades hidráulicas do solo.
description The assessment of the hydraulic properties of soils is an important aspect to consider when dealing with the soil-water phenomena, particularly its behavior at field sente when data coverage is needed for the feeding of integrated modeling purposes, or if any aspect of water management is treated. At field scale, it is importam to knowyhe spatial behavior of water transfer/retention conditions and related soifparameters as well as the ones that should be sampled for soil-water description. Difficulties for "in situ" determination brings simulation of hydraulic parameters as a natural choice for data coverage in large arcas (at least approximated data, since they have, in most cases, a complex behavior). An experiment was carried out in Angatuba, Sao Paulo, Brazi I (23°33'S; 48°.18'W; 670m) and intensive soim sampling was done in a regular grid, covering a 40 ha field, in order lo study spatial contrasts of hydraulic properties and related easy-measured soim parameters. Simulations for soil-water were done based upon the pore size distribution model and pedrotransfer functions. Results from the field scale observations have shown poi nt-by-point differences in the characteristics of soil permeability, particularly near saturation. Spatial anal ysi s h as shown low coefficient of variation values and lack of strong spatial autocorrelation, for ali soim properties analyzed.
publishDate 2001
dc.date.none.fl_str_mv 2001-12-28
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/363
url http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/363
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/363/332
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural
publisher.none.fl_str_mv Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural
dc.source.none.fl_str_mv Pesquisa Agropecuária Gaúcha; Vol 7 No 2 (2001): PESQ. AGROP. GAÚCHA; 211-219
Pesquisa Agropecuária Gaúcha; v. 7 n. 2 (2001): PESQ. AGROP. GAÚCHA; 211-219
2595-7686
0104-9070
reponame:Pesquisa Agropecuária Gaúcha (Online)
instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul
instacron:SEAPDR
instname_str Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul
instacron_str SEAPDR
institution SEAPDR
reponame_str Pesquisa Agropecuária Gaúcha (Online)
collection Pesquisa Agropecuária Gaúcha (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul
repository.mail.fl_str_mv pag@agricultura.rs.gov.br||
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