New procedure to estimate soil field capacity based on double ring infiltration data
Many models have been proposed to explain the water infiltration curve in soil, but according to the studies we have done so far, no model can simultaneously estimate the field capacity (FC) and soil hydraulic conductivity (K). The aim of this research is to present a new model that is defined based...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Ain Shams Engineering Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090447923004008 |
| _version_ | 1797449505655750656 |
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| author | Shayan Shamohammadi Mostafa Kadkhodahosseini Kaveh Ostad-Ali-Askari |
| author_facet | Shayan Shamohammadi Mostafa Kadkhodahosseini Kaveh Ostad-Ali-Askari |
| author_sort | Shayan Shamohammadi |
| collection | DOAJ |
| description | Many models have been proposed to explain the water infiltration curve in soil, but according to the studies we have done so far, no model can simultaneously estimate the field capacity (FC) and soil hydraulic conductivity (K). The aim of this research is to present a new model that is defined based on the dynamic balance of water-soil-time and is able to estimate FC and soil hydraulic conductivity using cumulative field infiltration data. The studies were carried out in Varamin region with an area of 1370 square kilometers. For the penetration test, first, seven sides (A, B, C, D, E, F and G) were selected in 7 areas of agricultural land and with a double ring with an outer diameter (70 cm) and an inner diameter (30 cm) became. Also, to determine the soil texture, apparent specific gravity, PWP and FC, soil sampling was done at the depths of 0–10 and 20–30 cm. To determine FC moisture, pressure (−10 kPa) was used in a pressurized membrane device, and to determine volumetric moisture in PWP, sieved samples were placed on ceramic plates. Using a spray, the samples were wetted, so that they reached the saturation level, and the pressure was set to 1500 kPa. Examining the FC values showed that the maximum value of FC in site F (clay loam texture) is equal to 14.73 cm and the lowest value in site G (sandy clay loam texture) is equal to 6.8 cm by the model estimated by the results obtained in Laboratory confirmed. Meanwhile, the minimum saturated hydraulic conductivity of soil at site A was estimated to be 0.06 cm/min and the maximum at sites D and F was 0.28 cm/min. Time constant (Ksh) has shown completely different water infiltration rate in the first term of the model (Rfksh) compared to the second term of it (K), and no obvious relation has detected between them. But, their summation (k+Rfksh) was always equal to the maximum infiltration instantaneous rate (T→0). The research results showed that using the new model, the FC value varies between 6.8 and 14.73 cm. Also, the minimum and maximum instantaneous speed of water infiltration occurred in the site. An equal to 0.621 and in site D equal to 1.735 cm/min. The results of fitting the penetration model on cumulative penetration data showed that R2 varies between 0.994 and 0.999 and RMSE between 0.116 and 1.197. Therefore, the model is able to describe the penetration data well. |
| first_indexed | 2024-03-09T14:25:56Z |
| format | Article |
| id | doaj.art-8ee8585259e64f60b1256d0c96a22e18 |
| institution | Directory Open Access Journal |
| issn | 2090-4479 |
| language | English |
| last_indexed | 2024-03-09T14:25:56Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ain Shams Engineering Journal |
| spelling | doaj.art-8ee8585259e64f60b1256d0c96a22e182023-11-28T07:25:40ZengElsevierAin Shams Engineering Journal2090-44792023-11-011411102511New procedure to estimate soil field capacity based on double ring infiltration dataShayan Shamohammadi0Mostafa Kadkhodahosseini1Kaveh Ostad-Ali-Askari2Water Engineering Department, College of Agriculture, Shahrekord University, Shahrekord 8818634141, IranWater Engineering Department, College of Agriculture, Shahrekord University, Shahrekord 8818634141, IranDepartment of Irrigation, College of Agriculture, Isfahan University of Technology, Isfahan 8415683111, Iran; Department of Civil Engineering, School of Engineering, American University in Dubai, Dubai, 28282, United Arab Emirates; Department of Natural Sciences, Manchester Metropolitan University, Manchester, M1 5GD, United Kingdom; Corresponding author.Many models have been proposed to explain the water infiltration curve in soil, but according to the studies we have done so far, no model can simultaneously estimate the field capacity (FC) and soil hydraulic conductivity (K). The aim of this research is to present a new model that is defined based on the dynamic balance of water-soil-time and is able to estimate FC and soil hydraulic conductivity using cumulative field infiltration data. The studies were carried out in Varamin region with an area of 1370 square kilometers. For the penetration test, first, seven sides (A, B, C, D, E, F and G) were selected in 7 areas of agricultural land and with a double ring with an outer diameter (70 cm) and an inner diameter (30 cm) became. Also, to determine the soil texture, apparent specific gravity, PWP and FC, soil sampling was done at the depths of 0–10 and 20–30 cm. To determine FC moisture, pressure (−10 kPa) was used in a pressurized membrane device, and to determine volumetric moisture in PWP, sieved samples were placed on ceramic plates. Using a spray, the samples were wetted, so that they reached the saturation level, and the pressure was set to 1500 kPa. Examining the FC values showed that the maximum value of FC in site F (clay loam texture) is equal to 14.73 cm and the lowest value in site G (sandy clay loam texture) is equal to 6.8 cm by the model estimated by the results obtained in Laboratory confirmed. Meanwhile, the minimum saturated hydraulic conductivity of soil at site A was estimated to be 0.06 cm/min and the maximum at sites D and F was 0.28 cm/min. Time constant (Ksh) has shown completely different water infiltration rate in the first term of the model (Rfksh) compared to the second term of it (K), and no obvious relation has detected between them. But, their summation (k+Rfksh) was always equal to the maximum infiltration instantaneous rate (T→0). The research results showed that using the new model, the FC value varies between 6.8 and 14.73 cm. Also, the minimum and maximum instantaneous speed of water infiltration occurred in the site. An equal to 0.621 and in site D equal to 1.735 cm/min. The results of fitting the penetration model on cumulative penetration data showed that R2 varies between 0.994 and 0.999 and RMSE between 0.116 and 1.197. Therefore, the model is able to describe the penetration data well.http://www.sciencedirect.com/science/article/pii/S2090447923004008Dynamic equilibriumRetention modelVaramin plainSoil saturated hydraulic conductivityShamohammadi method |
| spellingShingle | Shayan Shamohammadi Mostafa Kadkhodahosseini Kaveh Ostad-Ali-Askari New procedure to estimate soil field capacity based on double ring infiltration data Ain Shams Engineering Journal Dynamic equilibrium Retention model Varamin plain Soil saturated hydraulic conductivity Shamohammadi method |
| title | New procedure to estimate soil field capacity based on double ring infiltration data |
| title_full | New procedure to estimate soil field capacity based on double ring infiltration data |
| title_fullStr | New procedure to estimate soil field capacity based on double ring infiltration data |
| title_full_unstemmed | New procedure to estimate soil field capacity based on double ring infiltration data |
| title_short | New procedure to estimate soil field capacity based on double ring infiltration data |
| title_sort | new procedure to estimate soil field capacity based on double ring infiltration data |
| topic | Dynamic equilibrium Retention model Varamin plain Soil saturated hydraulic conductivity Shamohammadi method |
| url | http://www.sciencedirect.com/science/article/pii/S2090447923004008 |
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