Water use, water limitation, and water use efficiency in a Eucalyptus plantation

Millions of hectares of Eucalyptus are intensively managed for wood production worldwide, but the ecophysiology of resource limitation on growth remains poorly quantified. We investigated the production ecology of a 3.4- to 5.4- year-old plantation of clonal Eucalypus grandis x urophylla in northeas...

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Autores principales:	STAPE,JOSE LUIZ, BINKLEY,DAN, RYAN,MICHAEL G, DO NASCIMENTO GOMES,ANTONIO
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2004
Materias:	forest water use water use efficiency irrigation potential productivity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002004000200004
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spelling	oai:scielo:S0717-920020040002000042005-09-23Water use, water limitation, and water use efficiency in a Eucalyptus plantationSTAPE,JOSE LUIZBINKLEY,DANRYAN,MICHAEL GDO NASCIMENTO GOMES,ANTONIO forest water use water use efficiency irrigation potential productivity Millions of hectares of Eucalyptus are intensively managed for wood production worldwide, but the ecophysiology of resource limitation on growth remains poorly quantified. We investigated the production ecology of a 3.4- to 5.4- year-old plantation of clonal Eucalypus grandis x urophylla in northeastern Brazil on a sandy Oxisol during two years (one wet, and one with normal rainfall). We measured wood production and estimated water use (transpired water) in control and irrigated treatments. Water supply limited growth; wood biomass increased from 36.6 Mg ha-1 for both treatments to 107.0 and 141.0 Mg ha-1 after 2 years for the control and irrigated plots. Across both years, irrigation increased wood productivity by 52% (42.8 Mg ha-1 yr-1 versus 28.1 Mg ha-1 yr-1). Water use was similar between the control and irrigated treatments during the wet year, but irrigation increased water use by 37% in the normal rainfall year. The efficiency of water use (wood production per m3 of transpired water) in the control treatment increased from the normal year (1.8 kg wood/m³ of water) to the wet year (3.2 wood/m³ of water), and irrigation increased water use efficiency by 18% in the wet year, 75% in the normal year, and 32% across both years. In combination with prior work on water use efficiency across a geographic gradient in rainfall, these irrigation results indicate that increasing water use efficiency should be expected with increasing water use by Eucalyptus.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.25 n.2 20042004-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002004000200004en10.4067/S0717-92002004000200004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	forest water use water use efficiency irrigation potential productivity
spellingShingle	forest water use water use efficiency irrigation potential productivity STAPE,JOSE LUIZ BINKLEY,DAN RYAN,MICHAEL G DO NASCIMENTO GOMES,ANTONIO Water use, water limitation, and water use efficiency in a Eucalyptus plantation
description	Millions of hectares of Eucalyptus are intensively managed for wood production worldwide, but the ecophysiology of resource limitation on growth remains poorly quantified. We investigated the production ecology of a 3.4- to 5.4- year-old plantation of clonal Eucalypus grandis x urophylla in northeastern Brazil on a sandy Oxisol during two years (one wet, and one with normal rainfall). We measured wood production and estimated water use (transpired water) in control and irrigated treatments. Water supply limited growth; wood biomass increased from 36.6 Mg ha-1 for both treatments to 107.0 and 141.0 Mg ha-1 after 2 years for the control and irrigated plots. Across both years, irrigation increased wood productivity by 52% (42.8 Mg ha-1 yr-1 versus 28.1 Mg ha-1 yr-1). Water use was similar between the control and irrigated treatments during the wet year, but irrigation increased water use by 37% in the normal rainfall year. The efficiency of water use (wood production per m3 of transpired water) in the control treatment increased from the normal year (1.8 kg wood/m³ of water) to the wet year (3.2 wood/m³ of water), and irrigation increased water use efficiency by 18% in the wet year, 75% in the normal year, and 32% across both years. In combination with prior work on water use efficiency across a geographic gradient in rainfall, these irrigation results indicate that increasing water use efficiency should be expected with increasing water use by Eucalyptus.
author	STAPE,JOSE LUIZ BINKLEY,DAN RYAN,MICHAEL G DO NASCIMENTO GOMES,ANTONIO
author_facet	STAPE,JOSE LUIZ BINKLEY,DAN RYAN,MICHAEL G DO NASCIMENTO GOMES,ANTONIO
author_sort	STAPE,JOSE LUIZ
title	Water use, water limitation, and water use efficiency in a Eucalyptus plantation
title_short	Water use, water limitation, and water use efficiency in a Eucalyptus plantation
title_full	Water use, water limitation, and water use efficiency in a Eucalyptus plantation
title_fullStr	Water use, water limitation, and water use efficiency in a Eucalyptus plantation
title_full_unstemmed	Water use, water limitation, and water use efficiency in a Eucalyptus plantation
title_sort	water use, water limitation, and water use efficiency in a eucalyptus plantation
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002004000200004
work_keys_str_mv	AT stapejoseluiz waterusewaterlimitationandwateruseefficiencyinaeucalyptusplantation AT binkleydan waterusewaterlimitationandwateruseefficiencyinaeucalyptusplantation AT ryanmichaelg waterusewaterlimitationandwateruseefficiencyinaeucalyptusplantation AT donascimentogomesantonio waterusewaterlimitationandwateruseefficiencyinaeucalyptusplantation
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Water use, water limitation, and water use efficiency in a Eucalyptus plantation

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