COI code: NCIID04_153
Paper Language: English
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Authors Experimental Investigation and Numerical Simulation of Saline Irrigation Water Effects on the Unsaturated Soil ColumnsReza Delirhasannia - Associate Professor, Water Engineering Department, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
Farzin Mohammadi - CEO, Tarrah Gostar Abara Company, Tabriz, Iran.
Abstract:Study of solute movement and salt accumulation in the soils has been interested by researchers in the recent decades. A proper understanding of these phenomena can improve the strategies related to application of saline irrigation water and salts leaching practices. Several approaches have been used for simulation of solute movement through soil profile. In this research HYDRUS-2D software was used for simulation of irrigation water salt movement and distribution in 36 soil columns included 3 soil textures (light, medium and heavy textures), 4 salinity levels (0.09, 4, 8 and 12 ds/ m) and 3 replications. Water applications were done for a 45 days period and salt distributions were measured in 3 depths along the soil columns at the end of this period. Consequently, the same conditions were defined for HYDRUS and the accuracy of this software in the simulation of salt distribution was investigated. Comparisons between observed and simulated data clarified that HYDRUS have satisfactory accuracy in the simulation of salt distribution in unsaturated soils. However, HYDRUS has better performance in the heavy and medium soil textures with respective RMSE values of 0.14 and 0.13 gr l-1 in comparison with light texture soil with RMSE value of 0.25 gr l-1. Moreover, the result showed that by increasing solute concentration, the accuracy of HYDRUS decreases
Keywords:HYDRUS 2D, simulation, soil columns, solute movement line.
COI code: NCIID04_153
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Delirhasannia, Reza & Farzin Mohammadi, 2019, Experimental Investigation and Numerical Simulation of Saline Irrigation Water Effects on the Unsaturated Soil Columns, The 1st International and 4th National Congress on Iranian Irrigation and Drainage, اروميه -پژوهشكده مطالعات درياچه اروميه, دانشگاه اروميه, https://www.civilica.com/Paper-NCIID04-NCIID04_153.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Delirhasannia, Reza & Farzin Mohammadi, 2019)
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Type: state university
Paper No.: 17376
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