Document Type : Research Article

Authors

1 Isfahan University of Technology

2 University of Tehran

Abstract

Infiltration is a complex process that changed by initial moisture and water head on the soil surface. The main objective of this study was to estimate the coefficients of infiltration equations, Kostiakov-Lewis, Philip and Horton, and evaluate the sensitivity of these equations and their coefficients under various initial conditions (initial moisture soil) and boundary (water head on soil surface). Therefore, one-and two-dimensional infiltration for basin (or border) irrigation were simulated by changing the initial soil moisture and water head on soil surface from irrigation to other irrigation using the solution of the Richards’ equation (HYDRUS model). To determine the coefficients of infiltration equations, outputs of the HYDRUS model (cumulative infiltration over time) were fitted using the Excel Solver. Comparison of infiltration sensitivity equations and their coefficients in one-and two-dimensional infiltration showed infiltration equations and their sensitivity coefficients were similar function but quantitatively in most cases sensitive two-dimensional equations and their coefficients were greater than one dimension. In both dimensions the soil adsorption coefficient Philip equation as the sensitive coefficient and Horton equation as the sensitive equation under various initial moisture soil and water head on soil surface were identified.

Keywords

1- بای بوردی م. 1388. فیزیک خاک، انتشارات دانشگاه تهران، چاپ نهم، 674 ص.
2- پرچمی عراقی ف.، میر لطیفی س.م.، قربانی دشتکی ش. و مهدیان م.ح. 1389. ارزیابی برخی مدلهای نفوذ آب به خاک در برخی کلاس های بافتی و کاربری های اراضی. نشریه آبیاری و زهکشی ایران، شماره 2، جلد 4، ص 203-193.
3- تقی زاده ز.، وردی نژاد و.ر.، ابراهیمیان ح. و خان محمدی ن. 1391. ارزیابی مرزعه ای و تحلیل سیستم آبیاری سطحی با WinSRFR (مطالعه موردی آبیاری جویچه ای). نشریه آب و خاک (علوم و صنایع کشاورزی)، جلد 26، شماره 6، ص 1459-1450.
4- دربندی ص.، آیرملو ن.، جلیل زاده م. و دربندی ص. 1384. ارزیابی حساسیت ضرایب مدل های نفوذ به رطوبت اولیه خاک و تعیین مدل های ریاضی مربوطه. دومین کنفرانس سراسری آبخیزداری و مدیریت منابع آب و خاک، کرمان، سوم و چهارم اسفند ماه، ص 1625-1618.
5- رضایی پور ص.، قبادی نیا م.، طباطبایی س.ح.، شایان نژاد م. و نوروزی م.ر. 1393. ارزیابی روشهای مختلف تعیین ضرایب معادله نفوذ فیلیپ در فرایند آبیاری متوالی جویچه ها. نشریه آب و خاک، جلد 24، شماره 1، ص 238-225.
6- سپهوند ع.، طایی سمیرمی م.، میرنیا س.ا. و مرادی ح.ر. 1389. ارزیابی حساسیت مدل های نفوذ نسبت به تغییرپذیری رطوبت خاک. نشریه آب و خاک (علوم و صنایع کشاورزی)، جلد 25، شماره 2، خرداد - تیر 1390. ص 346- 338.
7- Ebrahimian H., Liaghat A., Parsinejad M., Abbasi F. and Navabian M. 2012. Comparison of one- and two dimensional models to simulate alternate and conventional furrow fertigation. Journal of Irrigation and Drainage Engineering, 138(10): 929-938.
8- Holzapfel E.A., Jara J., Zuniga Marino M.A., Paredes J. and Bilib M. 2004. Infiltration parameters for furrow irrigation. Agricultural Water Management 68(1): 19-32.
9- Horton R.E. 1940. An Approach Towards a Physical Interpretation of Infiltration Capacity. Soil Science Society of America Proceedings, 5: 399-417.
10- Kandelous M.M. and Simunek J. 2010. Comparison of numerical, analytical, and empirical models to estimate wetting patterns for surface subsurface drip irrigation. Journal of Irrigations Science, 28:435-444.
11- Mezencev V.J. 1948. Theory of formation of the surface runoff. Meteorologiae Hidrologia, 3: 33-40.
12- Philip J.R. 1957. The theory of infiltration: 1. The infiltration equation and its solution. Soil Science, 83: 345–357.
13- Simunek J., Sejna M. and Van Genuchten M.Th. 2006. The HYDRUS software package for simulating two-and three-dimensional movement of water, heat, and multiple solute in variably-saturated media, Technical Manual, Version 1.11, PC progress prague, Czech Republic.
14- Simunek J., Sejna M. and Van Genuchten M.T. 2012. The HYDRUS-1D software package for simulating the one–dimensional movement of water, heat, and multiple solutes in variably saturated media, Version 4.15, Department of Environment Sciences, University of California Riverside, Riverside, California, USA.
15- Siyal A.A., and Skaggs T.H. 2009. Measured and simulated soil patterns under porous clay pipe sub-surface irrigation. Journal of Agricultural Water Management. 96: 893-904.
16- Turner E. 2006. Comparison of Infiltration equationa and their field validation with rainfall simulatin. Thesis submitted to the faculty of the graduate school of the university of Maryland.
CAPTCHA Image