Pedotransfer functions to estimate retention and availability of water in soils of the state of Santa Catarina, Brazil
Studies on water retention and availability are scarce for subtropical or humid temperate climate regions of the southern hemisphere. The aims of this study were to evaluate the relations of the soil physical, chemical, and mineralogical properties with water retention and availability for the gener...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ciência do Solo
2013-08-01
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| Series: | Revista Brasileira de Ciência do Solo |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000400007&lng=en&tlng=en |
| _version_ | 1819057118538366976 |
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| author | André da Costa Jackson Adriano Albuquerque Jaime Antônio de Almeida Adriano da Costa Rodrigo Vieira Luciano |
| author_facet | André da Costa Jackson Adriano Albuquerque Jaime Antônio de Almeida Adriano da Costa Rodrigo Vieira Luciano |
| author_sort | André da Costa |
| collection | DOAJ |
| description | Studies on water retention and availability are scarce for subtropical or humid temperate climate regions of the southern hemisphere. The aims of this study were to evaluate the relations of the soil physical, chemical, and mineralogical properties with water retention and availability for the generation and validation of continuous point pedotransfer functions (PTFs) for soils of the State of Santa Catarina (SC) in the South of Brazil. Horizons of 44 profiles were sampled in areas under different cover crops and regions of SC, to determine: field capacity (FC, 10 kPa), permanent wilting point (PWP, 1,500 kPa), available water content (AW, by difference), saturated hydraulic conductivity, bulk density, aggregate stability, particle size distribution (seven classes), organic matter content, and particle density. Chemical and mineralogical properties were obtained from the literature. Spearman's rank correlation analysis and path analysis were used in the statistical analyses. The point PTFs for estimation of FC, PWP and AW were generated for the soil surface and subsurface through multiple regression analysis, followed by robust regression analysis, using two sets of predictive variables. Soils with finer texture and/or greater organic matter content retain more moisture, and organic matter is the property that mainly controls the water availability to plants in soil surface horizons. Path analysis was useful in understanding the relationships between soil properties for FC, PWP and AW. The predictive power of the generated PTFs to estimate FC and PWP was good for all horizons, while AW was best estimated by more complex models with better prediction for the surface horizons of soils in Santa Catarina. |
| first_indexed | 2024-12-21T13:34:14Z |
| format | Article |
| id | doaj.art-8e16670110b744508094c2b19b91fca1 |
| institution | Directory Open Access Journal |
| issn | 1806-9657 |
| language | English |
| last_indexed | 2024-12-21T13:34:14Z |
| publishDate | 2013-08-01 |
| publisher | Sociedade Brasileira de Ciência do Solo |
| record_format | Article |
| series | Revista Brasileira de Ciência do Solo |
| spelling | doaj.art-8e16670110b744508094c2b19b91fca12022-12-21T19:02:13ZengSociedade Brasileira de Ciência do SoloRevista Brasileira de Ciência do Solo1806-96572013-08-0137488991010.1590/S0100-06832013000400007S0100-06832013000400007Pedotransfer functions to estimate retention and availability of water in soils of the state of Santa Catarina, BrazilAndré da CostaJackson Adriano Albuquerque0Jaime Antônio de Almeida1Adriano da CostaRodrigo Vieira LucianoUniversidade do Estado de Santa CatarinaUniversidade do Estado de Santa CatarinaStudies on water retention and availability are scarce for subtropical or humid temperate climate regions of the southern hemisphere. The aims of this study were to evaluate the relations of the soil physical, chemical, and mineralogical properties with water retention and availability for the generation and validation of continuous point pedotransfer functions (PTFs) for soils of the State of Santa Catarina (SC) in the South of Brazil. Horizons of 44 profiles were sampled in areas under different cover crops and regions of SC, to determine: field capacity (FC, 10 kPa), permanent wilting point (PWP, 1,500 kPa), available water content (AW, by difference), saturated hydraulic conductivity, bulk density, aggregate stability, particle size distribution (seven classes), organic matter content, and particle density. Chemical and mineralogical properties were obtained from the literature. Spearman's rank correlation analysis and path analysis were used in the statistical analyses. The point PTFs for estimation of FC, PWP and AW were generated for the soil surface and subsurface through multiple regression analysis, followed by robust regression analysis, using two sets of predictive variables. Soils with finer texture and/or greater organic matter content retain more moisture, and organic matter is the property that mainly controls the water availability to plants in soil surface horizons. Path analysis was useful in understanding the relationships between soil properties for FC, PWP and AW. The predictive power of the generated PTFs to estimate FC and PWP was good for all horizons, while AW was best estimated by more complex models with better prediction for the surface horizons of soils in Santa Catarina.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000400007&lng=en&tlng=encapacidade de campoponto de murcha permanenteconteúdo de água disponívelanálise de correlaçãoanálise de trilha |
| spellingShingle | André da Costa Jackson Adriano Albuquerque Jaime Antônio de Almeida Adriano da Costa Rodrigo Vieira Luciano Pedotransfer functions to estimate retention and availability of water in soils of the state of Santa Catarina, Brazil Revista Brasileira de Ciência do Solo capacidade de campo ponto de murcha permanente conteúdo de água disponível análise de correlação análise de trilha |
| title | Pedotransfer functions to estimate retention and availability of water in soils of the state of Santa Catarina, Brazil |
| title_full | Pedotransfer functions to estimate retention and availability of water in soils of the state of Santa Catarina, Brazil |
| title_fullStr | Pedotransfer functions to estimate retention and availability of water in soils of the state of Santa Catarina, Brazil |
| title_full_unstemmed | Pedotransfer functions to estimate retention and availability of water in soils of the state of Santa Catarina, Brazil |
| title_short | Pedotransfer functions to estimate retention and availability of water in soils of the state of Santa Catarina, Brazil |
| title_sort | pedotransfer functions to estimate retention and availability of water in soils of the state of santa catarina brazil |
| topic | capacidade de campo ponto de murcha permanente conteúdo de água disponível análise de correlação análise de trilha |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000400007&lng=en&tlng=en |
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