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Title

Preliminary results for the global sensitivity analysis of SALTIRSOIL model outputs

AuthorsVisconti Reluy, Fernando ; Paz Bécares, José Miguel de; Rubio, José Luis ; Sánchez Díaz, Juan
KeywordsSALTIRSOIL model
Global sensitivity analysis
Soil
Salinity
Sodicity
Alkalinity
Issue Date2010
PublisherElsevier
CitationProcedia: Social and Behavioral Sciences 2(6): 7763-7764
6th International Conference on Sensitivity Analysis of Model Output, SAMO 2010; Milan; 19 July 2010 through 22 July 2010
AbstractSALTIRSOIL is a model for the prediction of soil salinity, sodicity and alkalinity in irrigated well-drained lands. These three characteristics are respectively assessed through the electrical conductivity and the sodium adsorption ratio of the soil saturation extract (ECse and SARse), and the pH of the soil saturated paste (pHsp). A global sensitivity analysis (GSA) was carried out to ascertain what input variables are more influential on these three outputs. The standardised regression coefficients of the linear regression analyses were used to calculate sensitivity measures. The irrigation water quality represented by ECiw and SARiw is the most influential factor on salinity and sodicity calculation, i.e. ECse and SARse respectively, while the carbon dioxide partial pressure so is on alkalinity (pHsp). Next there are the variables featuring the soil water balance: rainfall, average annual basal crop coefficient and reference evapotranspiration.
Description2 páginas, 1 tabla.
Publisher version (URL)http://dx.doi.org/10.1016/j.sbspro.2010.05.217
URIhttp://hdl.handle.net/10261/46101
DOI10.1016/j.sbspro.2010.05.217
ISSN1877-0428
Appears in Collections:(CIDE) Artículos
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