La superficie específica de oxisoles y su relación con la retención hídrica
The specific surface area of soil samples was estimated by the method of nitrogen adsorption at 78 K, and it was related to the water retention capacity, clay content, cation exchange capacity, and the amount of water retained on the exposed soil surface, in an approximation of superimposed layers....
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Facultad de Ciencias Agrarias-UNCuyo
2017
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| Acceso en línea: | https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3161 |
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I11-R107article-31612022-11-09T18:11:16Z Specific surface of oxisols and its relationship with water retention La superficie específica de oxisoles y su relación con la retención hídrica Ruiz, Hugo Alberto Sarli, Guillermo Oliverio Gonçalves Reynaud Schaefer, Carlos Ernesto Filgueira, Roberto Raul Silva de Souza, Fabiana adsorción de nitrógeno potencial agua BET-N2 espesor de capas de agua nitrogen adsorption water potential BET-N2 water layer thickness The specific surface area of soil samples was estimated by the method of nitrogen adsorption at 78 K, and it was related to the water retention capacity, clay content, cation exchange capacity, and the amount of water retained on the exposed soil surface, in an approximation of superimposed layers. Twenty seven Oxisols were investigated. Soil moisture retention was studied at water potentials -33, -500, -1000 and -1500 kPa. The specific surface area was positively correlated to soil moisture and with clay content. No relationship was found between specific surface area and cation exchange capacity. Between specific surface area and soil organic content only a weak correlation was found. The specific surface area was related with soil moisture content by linear equations obtained by the regression method of data, for each water potential applied. The results showed that the specific surface area of these Oxisols can be reasonable estimated by water retention in a wide range of matrix potentials. Finally, from the obtained data on specific surface area and water retention it was possible to estimate the thickness of the water film covering the entire surface of the soil pores exposed to the air. Se estimó la superficie específica (SE) de muestras de suelos mediante el método de adsorción de nitrógeno a 78 K, y se la relacionó con la capacidad de retención hídrica (RH), el contenido de arcilla, la capacidad de intercambio catiónico efectiva (CIC), y la cantidad de agua retenida sobre la superficie expuesta del suelo, en una aproximación de capas superpuestas. Se trabajó con veintisiete Oxisoles a potenciales hídricos equivalentes de -33, -500, -1000 y -1500 kPa. Se encontró una correlación positiva significativa entre la SE y RH, así como con el contenido de arcilla. No hubo una relación significativa de la dependencia entre la SE y la CIC. Entre la SE y el contenido de materia orgánica la correlación fue débil. La SE se relacionó con la RH por medio de ecuaciones de regresión lineal para cada potencial aplicado. Los resultados mostraron que la SE de estos Oxisoles puede ser estimada adecuadamente por la retención de agua en el suelo en una amplia gama de potenciales matriciales. Finalmente, de la información de SE y RH para cada suelo se pudo estimar la cantidad de capas de agua que cubren toda la superficie de los poros expuesta al aire. Facultad de Ciencias Agrarias-UNCuyo 2017-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3161 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 48 No. 2 (2016): July-December; 95-105 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 48 Núm. 2 (2016): Julio-Diciembre; 95-105 1853-8665 0370-4661 spa https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3161/2287 |
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Universidad Nacional de Cuyo |
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Revistas en línea |
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Revistas en línea |
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Revista de la Facultad de Ciencias Agrarias |
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Revista de la Facultad de Ciencias Agrarias |
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I-11 |
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R-107 |
| language |
spa |
| format |
Online |
| author |
Ruiz, Hugo Alberto Sarli, Guillermo Oliverio Gonçalves Reynaud Schaefer, Carlos Ernesto Filgueira, Roberto Raul Silva de Souza, Fabiana |
| spellingShingle |
Ruiz, Hugo Alberto Sarli, Guillermo Oliverio Gonçalves Reynaud Schaefer, Carlos Ernesto Filgueira, Roberto Raul Silva de Souza, Fabiana La superficie específica de oxisoles y su relación con la retención hídrica adsorción de nitrógeno potencial agua BET-N2 espesor de capas de agua nitrogen adsorption water potential BET-N2 water layer thickness |
| author_facet |
Ruiz, Hugo Alberto Sarli, Guillermo Oliverio Gonçalves Reynaud Schaefer, Carlos Ernesto Filgueira, Roberto Raul Silva de Souza, Fabiana |
| author_sort |
Ruiz, Hugo Alberto |
| title |
La superficie específica de oxisoles y su relación con la retención hídrica |
| title_short |
La superficie específica de oxisoles y su relación con la retención hídrica |
| title_full |
La superficie específica de oxisoles y su relación con la retención hídrica |
| title_fullStr |
La superficie específica de oxisoles y su relación con la retención hídrica |
| title_full_unstemmed |
La superficie específica de oxisoles y su relación con la retención hídrica |
| title_sort |
specific surface of oxisols and its relationship with water retention |
| description |
The specific surface area of soil samples was estimated by the method of nitrogen adsorption at 78 K, and it was related to the water retention capacity, clay content, cation exchange capacity, and the amount of water retained on the exposed soil surface, in an approximation of superimposed layers. Twenty seven Oxisols were investigated. Soil moisture retention was studied at water potentials -33, -500, -1000 and -1500 kPa. The specific surface area was positively correlated to soil moisture and with clay content. No relationship was found between specific surface area and cation exchange capacity. Between specific surface area and soil organic content only a weak correlation was found. The specific surface area was related with soil moisture content by linear equations obtained by the regression method of data, for each water potential applied. The results showed that the specific surface area of these Oxisols can be reasonable estimated by water retention in a wide range of matrix potentials. Finally, from the obtained data on specific surface area and water retention it was possible to estimate the thickness of the water film covering the entire surface of the soil pores exposed to the air. |
| publisher |
Facultad de Ciencias Agrarias-UNCuyo |
| publishDate |
2017 |
| url |
https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3161 |
| topic |
adsorción de nitrógeno potencial agua BET-N2 espesor de capas de agua nitrogen adsorption water potential BET-N2 water layer thickness |
| topic_facet |
adsorción de nitrógeno potencial agua BET-N2 espesor de capas de agua nitrogen adsorption water potential BET-N2 water layer thickness |
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1800220909183696896 |
