Skip to Main Content
A system dynamic model to estimate hydrological processes and water use in a eucalypt plantationAuthor(s): Ying Ouyang; Daping Xu; Ted Leininger; Ningnan Zhang
Source: Ecological Engineering
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
Download Publication (2.0 MB)
DescriptionEucalypts have been identified as one of the best feedstocks for bioenergy production due to theirfast-growth rate and coppicing ability. However, their water use efficiency along with the adverse envi-ronmental impacts is still a controversial issue. In this study, a system dynamic model was developed toestimate the hydrological processes and water use in a eucalyptus urophylla plantation using the STELLA(Structural Thinking and Experiential Learning Laboratory with Animation) software. This model was bothcalibrated and validated with very good agreements between model predictions and field measurementsobtained from our experiment. Two simulation scenarios were employed in this study, one was to quan-tify the hydrological processes in a eucalypt plantation (40 m × 40 m) under a normal (a base scenario)sandy soil condition, while the other was to estimate the potential impacts of the wet and dry sandy soilconditions upon the eucalyptus water use. A characteristic monthly variation pattern was found for soilevaporation, leaf transpiration, and root uptake, with increasing from winter to summer and decreasingfrom summer to the following winter. Overall, the rates of evaporation, transpiration, evapotranspiration(ET), and uptake were in the following order: ET > root uptake > leaf transpiration > soil evaporation. Themaximum rate of leaf transpiration was about five times greater than that of soil evaporation. The cumu-lative annual water use by the eucalypts was 690,000 L/plot (or 3200 L/tree). Although no differences inET rate and water use were found between the base and wet soil conditions, the discernable discrepanciesin ET rate and water use were observed between the wet and dry soil conditions when the soil watercontent was below 0.17 cm3/cm3. This study suggests that the system dynamic model developed withSTELLA is a useful tool to estimate soil hydrological processes and water use in a eucalypt plantation.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationOuyang, Ying; Xu, Daping; Leininger, Theodor D.; Zhang, Ningnan. 2016. A system dynamic model to estimate hydrological processes and water use in a eucalypt plantation. Ecological Engineering, Vol. 86: 290-299. 10 p. http://dx.doi.org/10.1016/j.ecoleng.2015.11.008
KeywordsEucalyptus Hydrological processes STELLA System dynamic model Water use
- Short-rotation management of Eucalyptus: guidelines for plantations in Hawaii
- Productivity, nutrient cycling, and succession in single- and mixed-species plantations of Casuarina equisetifolia, Eucalyptus robusta, and Leucaena leucocephala in Puerto Rico
- Pest risk assessment of the importation into the United States of unprocessed Eucalyptus logs and chips from South America
XML: View XML