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The energy and water balance of a Eucalyptus plantation in southeast Brazil

Cabral, Osvaldo M.R.; Rocha, Humberto R.; Gash, John H.C.; Ligo, Marcos A.V.; Freitas, Helber C.; Tatsch, Jonatan D.. 2010 The energy and water balance of a Eucalyptus plantation in southeast Brazil. Journal of Hydrology, 388. 208-216. 10.1016/jhydrol.2010.04.041

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Abstract/Summary

The eddy covariance method was used to measure energy and water balance of a plantation of Eucalyptus (grandis × urophylla) hybrids over a 2 year period. The average daily evaporation rates were 5.4 (±2.0) mm day−1 in summer, but fell to 1.2 (±0.3) mm day−1 in winter. In contrast, the sensible heat flux was relatively low in summer but dominated the energy balance in winter. Evaporation accounted for 80% and 26% of the available energy, in summer and winter respectively. The annual evaporation was 82% (1124 mm) and 96% (1235 mm) of the annual rainfall recorded during the first and second year, respectively. Daily average canopy and aerodynamic conductance to water vapour were in the summer 51.9 (±38.4) mm s−1 and 84.1 (±25.6) mm s−1, respectively; and in the winter 6.0 (±10.5) mm s−1 and 111.6 (±24.6) mm s−1, respectively.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/jhydrol.2010.04.041
Programmes: CEH Topics & Objectives 2009 - 2012 > Water > WA Topic 2 - Ecohydrological Processes
CEH Sections: Harding (to July 2011)
ISSN: 0022-1694
Additional Keywords: evaporation, eddy covariance, canopy conductance, Eucalyptus plantation
NORA Subject Terms: Hydrology
Date made live: 13 Jul 2010 13:07
URI: http://nora.nerc.ac.uk/id/eprint/10107

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