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Linear root water uptake by vegetation

Ali, N., and Rees, S.W., (2009) Linear root water uptake by vegetation. Malaysian Journal of Civil Engineering, 21 (2). pp. 110-124. ISSN 18237843

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Official URL: http://www.civil.utm.my

Affiliations

Universiti Teknologi Malaysia. Faculty of Civil Engineering
Cardiff School of Engineering, UK

Abstract

The performance of a simple model with a linear root water extraction term that varies with time is presented in this paper. The research is based on the use of a one-dimensional form of Richard’s Equation for unsaturated moisture flow including a sink term. A numerical solution has been achieved via the finite element method for spatial discretisation along with a finite difference time-marching scheme. The model is assessed via a series of simulations of water uptake beneath uniform crop cover. A good correlation between the field data and simulated results has been achieved. This relatively straight forward approach is seemed more suitable for development and application to a range of geoengineering problems such as slope stability, shrinkage and heave prediction.

Item Type:Journal
Keywords:Simulation, Suction, Tree Root, Unsaturated
Subjects:T Technology, Engineering
ID Code:12029

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