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Open AccessArticle

Modelling Soil Water Dynamics from Soil Hydraulic Parameters Estimated by an Alternative Method in a Tropical Experimental Basin

Centro de Tecnologia e Geociências, Universidade Federal de Pernambuco, Recife 50670-901, Brazil
Centro Acadêmico do Agreste, Universidade Federal de Pernambuco, Caruaru 55014-900, Brazil
Departamento de engenharia Civil e Ambiental, Universidade Federal da Paraíba, João Pessoa 58051-900, Brazil
Departamento de Engenharia Agrícola, Universidade Federal Rural de Pernambuco, Recife 52171-900, Brazil
Laboratoire d’Ecologie des Hydrosystèmes Naturels et Anthropisés, Université de Lyon, site ENTPE, 69120 Vaulx-en-Velin, France
Authors to whom correspondence should be addressed.
Water 2019, 11(5), 1007;
Received: 27 February 2019 / Revised: 30 April 2019 / Accepted: 9 May 2019 / Published: 14 May 2019
(This article belongs to the Special Issue Soil Hydrology for a Sustainable Land Management. Theory and Practice)
PDF [2596 KB, uploaded 14 May 2019]


Knowledge about soil moisture dynamics and their relation with rainfall, evapotranspiration, and soil physical properties is fundamental for understanding the hydrological processes in a region. Given the difficulties of measurement and the scarcity of surface soil moisture data in some places such as Northeast Brazil, modelling has become a robust tool to overcome such limitations. This study investigated the dynamics of soil water content in two plots in the Gameleira Experimental River Basin, Northeast Brazil. For this, Time Domain Reflectometry (TDR) probes and Hydrus-1D for modelling one-dimensional flow were used in two stages: with hydraulic parameters estimated with the Beerkan Estimation of Soil Transfer Parameters (BEST) method and optimized by inverse modelling. The results showed that the soil water content in the plots is strongly influenced by rainfall, with the greatest variability in the dry–wet–dry transition periods. The modelling results were considered satisfactory with the data estimated by the BEST method (Root Mean Square Errors, RMSE = 0.023 and 0.022 and coefficients of determination, R2 = 0.72 and 0.81) and after the optimization (RMSE = 0.012 and 0.020 and R2 = 0.83 and 0.72). The performance analysis of the simulations provided strong indications of the efficiency of parameters estimated by BEST to predict the soil moisture variability in the studied river basin without the need for calibration or complex numerical approaches. View Full-Text
Keywords: soil moisture content; vadose zone; soil properties; BEST model; Hydrus-1D soil moisture content; vadose zone; soil properties; BEST model; Hydrus-1D

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Silva Ursulino, B.; Maria Gico Lima Montenegro, S.; Paiva Coutinho, A.; Hugo Rabelo Coelho, V.; Cezar dos Santos Araújo, D.; Cláudia Villar Gusmão, A.; Martins dos Santos Neto, S.; Lassabatere, L.; Angulo-Jaramillo, R. Modelling Soil Water Dynamics from Soil Hydraulic Parameters Estimated by an Alternative Method in a Tropical Experimental Basin. Water 2019, 11, 1007.

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