A model for Evaporation and Drainage investigations at Ground of Ordinary Rainfed-areas

Mehmet Aydin

Ecological Modelling, 2008, vol. 217, issue 1, 148-156

Abstract: Quantification of water losses through evaporation and drainage from bare soils in arid and semi-arid regions is very important for an effective management strategy to conserve soil water. In this study, a model for Evaporation and Drainage investigations at Ground of Ordinary Rainfed-areas (hereafter E-DiGOR) is presented. Daily potential evaporation (Ep) from bare soils was calculated using the Penman–Monteith equation with a surface resistance of zero. Actual soil evaporation (Ea) was computed according to Aydin et al. [Aydin, M., Yang, S.L., Kurt, N., Yano, T., 2005. Test of a simple model for estimating evaporation from bare soils in different environments. Ecol. Model. 182 (1), 91–105; Aydin, M., Yano, T., Evrendilek, F., Uygur, V., 2008. Implications of climate change for evaporation from bare soils in a Mediterranean environment. Environ. Monit. Assess. 140, 123–130]. Deep drainage (D) was simply calculated by the mass balance, taking field capacity into account. In order to test the performance of the model mainly for drainage estimations, a micro-lysimeter-experiment was carried out under field conditions. The experimental terrain was nearly flat, with no appreciable slope. Estimated and measured water balance components such as actual evaporation (R2=91.4%; P<0.01), drainage (R2=88.5%; P<0.01) and soil water storage (R2=89.7%; P<0.01) were in agreement. This agreement supported the model hypothesis, thus rendering the model useful in estimating soil evaporation, drainage and water storage in an interactive way with a few parameters.

Keywords: Arid environment; Rainfed-areas; Soil evaporation; Drainage; Modelling (search for similar items in EconPapers)
Date: 2008
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0304380008002986
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:ecomod:v:217:y:2008:i:1:p:148-156

DOI: 10.1016/j.ecolmodel.2008.06.015

Access Statistics for this article

Ecological Modelling is currently edited by Brian D. Fath

More articles in Ecological Modelling from Elsevier
Bibliographic data for series maintained by Catherine Liu ().