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In-situ partitioning of evaporation and transpiration components using a portable evapotranspiration dome : A case study in Tall Fescue (Festuca arundinacea)
Citation
Alam, MS and Lamb, DW and Rahman, MM, In-situ partitioning of evaporation and transpiration components using a portable evapotranspiration dome : A case study in Tall Fescue (Festuca arundinacea), Agricultural Water Management: An International Journal, 213 pp. 352-357. ISSN 0378-3774 (2019) [Refereed Article]
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Copyright Statement
Copyright (2018) Elsevier B.V. All rights reserved. This article is distributed under the Creative Commons CC BY-NC-ND 4.04.0 license (https://creativecommons.org/licenses/by-nc-nd/4.0/).
DOI: doi:10.1016/j.agwat.2018.10.042
Abstract
Understanding the components of water consumption of a crop or pasture through evapotranspiration is important for improving water management. In this study the FAO dual crop coefficient methodology has been used in conjunction with a portable evapotranspiration chamber in-situ, to quantify the basal crop (Kcb) and soil evaporation (Ke) coefficients of a pasture as a function of leaf area index and a widely used spectro-optical reflectance index, NDVI. To facilitate the measurement of soil evaporation component, small segments of the green biomass of a target pasture canopy, Tall Fescue (Festuca arundinacea var. Dovey) were allowed to rapidly senesce by applying a commercial herbicide while preserving the soil moisture and canopy structure. The ratio between the transpiration and evapotranspiration components (Kcb/Kc) increased from 0.03 to 0.46 for zero to highest available vegetation cover (LAI from 0 to 4.22). A significant linear relationship was observed between Kcb and NDVI (R2 = 0.88) suggesting the possibility of using the latter, for example through remote sensing technologies, to determine the former.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Evapotranspiration, Stomatal Conductance, Crop coefficient |
| Research Division: | Agricultural, Veterinary and Food Sciences |
| Research Group: | Agriculture, land and farm management |
| Research Field: | Agricultural hydrology |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding knowledge |
| Objective Field: | Expanding knowledge in the agricultural, food and veterinary sciences |
| UTAS Author: | Alam, MS (Mr Muhammad Shahinur Alam) |
| ID Code: | 154543 |
| Year Published: | 2019 |
| Web of Science® Times Cited: | 4 |
| Deposited By: | TIA - Research Institute |
| Deposited On: | 2022-12-12 |
| Last Modified: | 2023-01-13 |
| Downloads: | 1 View Download Statistics |
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