Comparison of Fitting Quality and Changes Trend of Moisture Curve Parameters of Mualem-Van Genuchten Model at Different compaction Treatments of Sandy Loam and Clay Loam Soils
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2012, Vol 3, Issue 2
Abstract
Soil hydraulic properties including soil water characteristics curve and hydraulic conductivity are two important properties to determination of water movement in soil. The aim of this study was to evaluation of fitting quality of Mualem-Van Genuchten model on moisture curve and comparing in two soil texture classes (sandy loam and clay loam) and in different compaction treatments. Samples were collected from 0-10cm depth and Compaction created by proctor in six replication and four levels including C0 (control), C1, C2 and C3 by increasing in soil bulk density with the ratio of 5, 10 and 15%, respectively. Mualem-Van Genuchten model using RETC software were fitted on moisture-suction data obtained from pressure plate. Fitting quality of considered model achieved by R2 and RMSE calculation. RMSE in sandy loam soil had no change compared to control. But clay loam soil had increasing trend in terms of RMSE. Due to little changes of model in sandy loam in all treatments compared to clay loam, the use of this model in light textured and field compaction status was recommended.
Authors and Affiliations
Hassan Abbaspour*| M.Sc. Student, Department of Soil Science Engineering , Campus of Agriculture and Natural Resources, Karaj, Tehran University, Iran, Tel: 09149153873. Email:abbaspour_hassan@yahoo.com,abbaspour_hassan@yahoo.com, Mob: 09149153873, Mehdi Shorafa| Associate Professor, Department of Soil Sciences Engineering, Campus of Agriculture and Natural Resources, Karaj, Tehran University, Iran, Tel: 09122630992 Email: mshorafa@ut.ac.ir, Mehdi Rashtbari| M.Sc. Student, Department of Soil Science Engineering , Campus of Agriculture and Natural Resources, Karaj, Tehran University, Iran, Tel: 09371684968. Email:mehdi.rashtbari@gmail.com
Keywords
Related Articles
- EP ID EP4912
- DOI -
- Views 504
- Downloads 34
The effectiveness of instructing hardiness factors on occupational burnout among the personal of the Olympic (using canonical correlation analysis)
The purpose of this research is the effectiveness of instructing hardiness factors (ie commitment, challenge and control) on occupational burn out (affective fatigue, personal performance, personality metamorphosis and o...
Myth and its historical roots in Iran and the world
This study aimed to investigate and Myths of the world are explained. The tale is a story with many different themes and concepts, and sometimes incorporate Ghyrhqyqy imagination and events around the world with a long h...
High resolution transmission electron microscopy of irregular NiFe/Cu multilayers
NiFe/Cu alloy films and multilayers were electrodeposited from a nickel sulfate bath in the potentiostatic mode. The growth of the layers is studied via high resolution transmission electron microscopy. A wavy pattern is...
Estimating lead and copper transport parameters from unsaturated clay soil column
The predictive accuracy of using the one-dimensional advection-dispersion equation to evaluate the fate and transport of solute in a soil column is usually dependent on the proper determination of transport parameters, d...
Studying bankruptcy risk, productivity and firm strategy in companies listed in Tehran stock exchange
The purpose of this research is to examine the relationship between productivity, firm strategy and bankruptcy risk in companies listed in Tehran stock exchange. In case of bankruptcy all groups that are somehow related...