Accessibility navigation


Water use of a bioenergy plantation increases in a future high CO2 world

Tricker, P.J., Pecchiari, M., Bunn, S.M., Vaccari, F.P., Peressotti, A., Miglietta, F. and Taylor, G. (2009) Water use of a bioenergy plantation increases in a future high CO2 world. Biomass and Bioenergy, 33 (2). pp. 200-208. ISSN 0961-9534

Full text not archived in this repository.

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1016/j.biombioe.2008.05.009

Abstract/Summary

Fast-growing poplar trees may in future be used as a source of renewable energy for heat, electricity and biofuels such as bioethanol. Water use in Populus x euramericana (clone I214), following long-term exposure to elevated CO2 in the POPFACE (poplar free-air carbon dioxide enrichment) experiment, is quantified here. Stomatal conductance was measured and, during two measurement campaigns made before and after coppicing, whole-tree water use was determined using heat-balance sap-flow gauges, first validated using eddy covariance measurements of latent heat flux. Water use was determined by the balance between leaf-level reductions in stomatal conductance and tree-level stimulations in transpiration. Reductions in stomatal conductance were found that varied between 16 and 39% relative to ambient air. Whole-tree sap flow was increased in plants growing under elevated CO2, on average, by 12 and 23%, respectively, in the first and in the second measurement campaigns. These results suggest that future CO2 concentrations may result in an increase in seasonal water use in fast-growing, short-rotation Populus plantations.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Biological Sciences
ID Code:9714
Uncontrolled Keywords:Sap flow, FACE, Leaf area, Biomass crop, Stomatal conductance

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation