Evaluation of Simple, Dynamic Soil Moisture Model
Publication: Journal of Irrigation and Drainage Engineering
Volume 113, Issue 3
Abstract
The dynamics of soil moisture in the root zone is of fundamental importance in agricultural water management. A simple, yet physically based model is presented which describes the processes of redistribution of the soil moisture profile, drainage, and evapotransportation (ET) from the root zone. Using the sharp wetting front approximation, relatively simple expressions are derived that are explicit in parameters describing the soil and climate/vegetation properties. Application of these models using parameter values selected a priori indicates good results. Comparison of the redistribution and drainage models with laboratory data shows good agreement, as does comparison of the ET model with field soil moisture measurements. Uncertainty in soil parameters, root zone depth, and timing of irrigation applications affect model performance.
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References
1.
Bazaraa, A. S. (1979). “Experimental/analytical investigation of the recharge rates to a groundwater table.” Colorado State Univ., HYDROWAR Program, Fort Collins, Colo.
2.
Brooks, R. H., and Corey, A. T. (1964). “Hydraulic properties of porous media.” Hydrology Paper No. 3, Colorado State Univ., Ft. Collins, Colo., 1–27.
3.
Bureau of Reclamation, U.S. Dept. of the Interior (1981). “Water management and conservation program.” Annual Report, Engineering and Research Center, Denver, Colo.
4.
Charbeneau, R. J. (1984). “Kinematic models for soil moisture and solute transport.” Water Resour. Res., 20(6), 699–708.
5.
Clapp, R. B., Hornberger, G. M., and Cosby, B. J. (1983). “Estimating spatial variability in soil moisture with a simplified dynamic model,” Water Resour. Res., 19(3), 739–745.
6.
Cordova, J. R., and Bras, R. L. (1981). “Physically based probabilistic of models of infiltration, soil moisture and actual evapotranspiration.” Water Resour. Res., 17(1), 93–106.
7.
Corey, A. T. (1977). “Mechanics of heterogeneous fluids in porous media.” Water Resour. Publications, Ft. Collins, Colo., 1–259.
8.
Dagan, G., and Bresler, E. (1983). “Unsaturated flow in spatially variable fields, 1, derivation of models of infiltration and redistribution.” Water Resour. Res., 19(2), 413–420.
9.
Gear, R. D., Dransfield, A. S., and Campbell, M. D. (1977). “Irrigation scheduling with neutron probe.” J. Irrig. and Drain. Div., ASCE, 103(3), 291–298.
10.
Hillel, D. (1982). Introduction to soil physics, Academic Press, New York, N.Y., 364 pp.
11.
Jensen, M. E., Robb, D. C., and Franzoy, C. E. (1970). “Scheduling irrigation using climate‐crop‐soil data.” J. Irrig. and Drain. Div., ASCE, 96(1), 25–28.
12.
Johnston, P. R., and Pilgrim, D. H. (1976). “Parameter optimization for watershed models.” Water Resour. Res., 12(3), 477–486.
13.
Koch, R. W., and Allen, R. L. (1986). “A decision support system for local water management.” J. Water Resour. Plng. and Mgmt., ASCE, 112(4), 527–541.
14.
Mein, R. G., and Larson, C. L. (1973). “Modeling infiltration during a steady, uninterrupted rain.” Water Resour. Res., 9(2), 384–394.
15.
Morel‐Seytoux, H. J. (1981). “Application of infiltration theory for the determination of excess rainfall hyetograph.” Water Resour. Bulletin, AWRA, 17(6), 1012–1022.
16.
Morel‐Seytoux, H. J. (1982). “Analytical results for prediction of variable rainfall infiltration.” J. Hydrology, 59, 209–230.
17.
Morel‐Seytoux, H. J. (1984). “From excess infiltration to aquifer recharge, A derivation based on the theory of flow of water in unsaturated soils.” Water Resour. Res., 20(9), 1230–1240.
18.
Morel‐Seytoux, H. J., and Khanji, J. (1974). “Derivation of an equation of infiltration.” Water Resour. Res., 10(4), 795–880.
19.
Rhenals, A. E., and Bras, R. L. (1981). “The irrigation scheduling problem and evapotranspiration uncertainty.” Water Resources Res., 17(5), 1328–1338.
20.
Rosenbrock, H. H. (1960). “An automatic method for finding the greatest or least value of a function.” Computer J. 3(3), 175–184.
21.
Skaggs, R. W., and Khaleel, R. (1982). “Infiltration,” Chapter 4 in Hydrologic Modeling of Small Watersheds, American Society of Agricultural Engineers, Monograph No. 5, 121–168.
22.
Smith, R. E. (1983). “Approximate soil water movement by kinematic characteristics.” Soil Sci. Soc. of America J., 47, 3–8.
23.
Sorooshian, S., and Gupta, V. K. (1983). “Automatic calibration of conceptual rainfall‐runoff models: the question of parameter observability and uniqueness.” Water Resour. Res., 19(1), 260–268.
24.
United States Dept. of Agriculture (1980). “Soil survey for Washington County, Oregon.” Soil Conservation Service.
25.
Yaron, D., et al. (1973). “Wheat response to soil moisture and optimal irrigation policy under conditions of unstable rainfall.” Water Resour. Res., 9(5), 1145–1153.
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Copyright © 1987 ASCE.
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Published online: Aug 1, 1987
Published in print: Aug 1987
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