Volume 12, Issue 3 (12-2021)                   2021, 12(3): 101-114 | Back to browse issues page

XML Persian Abstract Print

Department of Soil Science, Collage of Agriculture, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
Abstract:   (924 Views)
Quick and accurate estimation of soil available water as one of the most critical soil quality indices plays an essential role in agricultural water resources management. The present study estimated the least limiting water range (LLWR) for 250 soil samples taken from Khanmirza plain in Chaharmahal and Bakhtiari province. Artificial intelligence method (combining genetic algorithm (GA) with artificial neural network (ANN)) and readily available soil properties were used for this purpose. The LLWR was considered as output variable, and sand, silt and clay percentages, organic carbon content, bulk density (BD), particle density (PD), pH, electrical conductivity (EC) and equivalent calcium carbonate (CCE) were considered as input variables. From 250 data, 200 were allocated to model training and 50 to model testing. The statistical analyses showed that the artificial neural network had a reasonable estimate of LLWR with a coefficient of determination of 0.93. Finally, the combined model of artificial neural network-genetic algorithm (ANN-GA) with the highest coefficient of determination (R2 = 0.96) was identified as the most appropriate model for predicting LLWR. The two models of artificial neural network and genetic algorithm generally showed better performance than the regression equations.
Full-Text [PDF 1487 kb]   (367 Downloads)    
Type of Study: Research | Subject: Modeling of soil-water-plant relations and root water uptake
Received: 2021/07/25 | Accepted: 2021/11/23 | Published: 2021/12/21

Add your comments about this article : Your username or Email:

Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.