DETERMINATION OF SOIL WATER STORAGE CAPACITY IN A SILTY LOAM SOIL WITH SHALLOW WATER TABLE

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SHAMS SHIDEH; SEPASKHAH ALI REZA

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Journal: IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING Year:2008 | Volume:2 | Issue:4 Page(s): 3-11

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Information Journal Paper

Title

DETERMINATION OF SOIL WATER STORAGE CAPACITY IN A SILTY LOAM SOIL WITH SHALLOW WATER TABLE

Author(s)

SHAMS SHIDEH | SEPASKHAH ALI REZA | Issue Writer Certificate

Keywords

SHALLOW WATER TABLEQ3

SOIL WATER STOTAGE CAPACITYQ3

ENCAPSULATED AIRQ3

Abstract

In many hydrologic and agricultural researches, the amount of water requirement to raise a SHALLOW WATER TABLE to the soil surface, i.e., soil water storage capacity (SWSC), is important. In this research, the amount of SWSC was measured and estimated. Then, relationship between SWSC and groundwater depth were obtained as a polynomial function for Kuye-Asatid soil (silty loam) using theoretical and experimental methods. Also the effect of ENCAPSULATED AIR on SWSC is investigated in both methods. Four water table depths of 30, 60, 90 and 120 cm were simulated in laboratory, and soil water contents at different depths were measured and the amount of SWSC was calculated under different water table depths. Regression analysis was used to obtain the relationships between SWSC and water table depth for the experimental data. The amounts of soil water storage capacity in both experimental and theoretical methods are compared using linear regression. The values of the coefficient of determination R2 for cases encapsulated and without ENCAPSULATED AIR were 0.96 and 0.99, respectively. Further, the values of slope and intercept of linear relationship indicated that the data obtained with ENCAPSULATED AIR are close to the results of theoretical approach. The results show the amount of ENCAPSULATED AIR in soil water storage capacity is about 21% of soil porosity. Therefore, it should be considered in SWSC calculation. The proposed equation accommodates the reduction effect of the capillary fringe on SWSC. By statistical comparison the proposed function for case of ENCAPSULATED AIR is similar to theoretical equation, but in case of without ENCAPSULATED AIR condition, they are not similar.

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APA: Copy

SHAMS, SHIDEH, & SEPASKHAH, ALI REZA. (2008). DETERMINATION OF SOIL WATER STORAGE CAPACITY IN A SILTY LOAM SOIL WITH SHALLOW WATER TABLE. IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING, 2(4), 3-11. SID. https://sid.ir/paper/134874/en

Vancouver: Copy

SHAMS SHIDEH, SEPASKHAH ALI REZA. DETERMINATION OF SOIL WATER STORAGE CAPACITY IN A SILTY LOAM SOIL WITH SHALLOW WATER TABLE. IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING[Internet]. 2008;2(4):3-11. Available from: https://sid.ir/paper/134874/en

IEEE: Copy

SHIDEH SHAMS, and ALI REZA SEPASKHAH, “DETERMINATION OF SOIL WATER STORAGE CAPACITY IN A SILTY LOAM SOIL WITH SHALLOW WATER TABLE,” IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING, vol. 2, no. 4, pp. 3–11, 2008, [Online]. Available: https://sid.ir/paper/134874/en

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