Modelowanie wilgotności gleby w mikrozlewni lessowej użytkowanej rolniczo

• Autorzy: Lopatka A. , Jadczyszyn J.

Warianty tytułu

EN

Soil moisture modeling in agricultural micro catchment

• Języki publikacji: PL

Abstrakty

EN

The aim of work was comparison of two water balance models with different degree of complexity to predict soil moisture in small hilly loess catchment and to compare results of the modeling with field measurement done with TOR probes. In the first "bucket" model soil is treated as a tank for water with definite capacity, in the second more sophisticatcd model elaborated in the FEFLOW software, soil properties are described by retention curve and soil moisture pattern is obtained as a solution of Richards equation. In both models actual evapotranspiration is modeled by FAO56 method. The results obtained from both models were acceptable with similar determination coefficient of about 0,8. However, simulation of soil moisture with the FEFLOW model is more accurate although it requires more parameters and seeking for stable numerical solution. On the other hand it is also more suitable to use in hilly terrain where horizontal soil water fluxes must be taken into account.

Słowa kluczowe

PL

tereny rolnicze; mikrozlewnie lessowe; gleby; wilgotnosc gleby; zlewnie

• Wydawca: -
• Czasopismo: Prace i Studia Geograficzne
• Rocznik: 2010
• Tom: 45
• Opis fizyczny: s.153-164,tab.,wykr.,fot.,bibliogr.

Twórcy

autor

Lopatka A.

• Instytut Uprawy Nawożenia i Gleboznawstwa, Państwowy Instytut Badawczy w Puławach, Puławy

autor

Jadczyszyn J.

• Instytut Uprawy Nawożenia i Gleboznawstwa, Państwowy Instytut Badawczy w Puławach, Puławy

Bibliografia

• Allen R., Pereira G., Raes D., Smith M., 2000, Crop evapotranspiration. FAOIrrig. And Drain. Paper No. 56, FAO, Rome.
• Diersch H.-J.G., 1997, FEFLOW - Physical basis of modeling, WASY Institute for Water Resources Planning and Systems Research Ltd., Berlin.
• Diersch H.-J.G., 2009, WASY Software FEFLOW 5.4 Finite Element Subsurface Flow and Transport Simulation System. Reference Manual, WASY Institute for Water Resources Planning and Systems Research Ltd., Berlin.
• Guswa A.J., Celia M.A., Rodriguez I.I., 2002, Models of soil moisture dynamics in ecohydrology-comparative study, Water Resources Research 38, 9.
• Iwanow N. N., 1954, Estimation of the amount of evaporation ability, Izv. Vsesojusm. Obshch.-va, T. 86.
• Robock, A., K. Ya. Vinnikov, C. A. Schlosser, N. A. Speranskaya, and Y. Xue, 1995, Use of midlatitude soil moisture and meteorological observations to validate soil moisture simulations with biosphere and bucket models, J. Clim. 8, 15-35.
• van Genuchten M.Th., 1980, A Closed-form Equation for Predicting the Hydraulic Conductivity of Unsaturated Soils, Soil Sci. Soc. Am. J. 44, 892-898.