Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations

dc.contributorCIRAD
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.contributorUniversidade Estadual de Mato Grosso do Sul (UEMS)
dc.contributorIRD
dc.contributorN Carolina State Univ
dc.creatorLaclau, Jean-Paul [UNESP]
dc.creatorSilva, Eder A. da
dc.creatorLambais, George Rodrigues
dc.creatorBernoux, Martial
dc.creatorle Maire, Guerric
dc.creatorStape, José Luiz [UNESP]
dc.creatorBouillet, Jean-Pierre
dc.creatorMoraes Goncalves, Jose L. de
dc.creatorJourdan, Christophe
dc.creatorNouvellon, Yann
dc.date2014-12-03T13:11:35Z
dc.date2014-12-03T13:11:35Z
dc.date2013-07-09
dc.date.accessioned2023-09-09T10:13:05Z
dc.date.available2023-09-09T10:13:05Z
dc.identifierhttp://dx.doi.org/10.3389/fpls.2013.00243
dc.identifierFrontiers In Plant Science. Lausanne: Frontiers Research Foundation, v. 4, 12 p., 2013.
dc.identifier1664-462X
dc.identifierhttp://hdl.handle.net/11449/113282
dc.identifier10.3389/fpls.2013.00243
dc.identifierWOS:000330727300001
dc.identifierWOS000330727300001.pdf
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8762889
dc.descriptionAlthough highly weathered soils cover considerable areas in tropical regions, little is known about exploration by roots in deep soil layers. Intensively managed Eucalyptus plantations are simple forest ecosystems that can provide an insight into the belowground growth strategy of fast-growing tropical trees. Fast exploration of deep soil layers by eucalypt fine roots may contribute to achieving a gross primary production that is among the highest in the world for forests. Soil exploration by fine roots down to a depth of 10 m was studied throughout the complete cycle in Eucalyptus grandis plantations managed in short rotation. Intersects of fine roots, less than 1 mm in diameter, and medium-sized roots, 1-3 mm in diameter, were counted on trench walls in a chronosequence of 1-, 2-, 3.5-, and 6-year-old plantations on a sandy soil, as well as in an adjacent 6-year-old stand growing in a clayey soil. Two soil profiles were studied down to a depth of 10 m in each stand (down to 6 m at ages 1 and 2 years) and 4 soil profiles down to 1.5-3.0 m deep. The root intersects were counted on 224 m(2) of trench walls in 15 pits. Monitoring the soil water content showed that, after clear cutting, almost all the available water stored down to a depth of 7 m was taken up by tree roots within 1.1 year of planting. The soil space was explored intensively by fine roots down to a depth of 3 m from 1 year after planting, with an increase in anisotropy in the upper layers throughout the rotation. About 60% of fine root intersects were found at a depth of more than 1 m, irrespective of stand age. The root distribution was isotropic in deep soil layers and kriged maps showed fine root clumping. A considerable volume of soil was explored by fine roots in eucalypt plantations on deep tropical soils, which might prevent water and nutrient losses by deep drainage after canopy closure and contribute to maximizing resource uses.
dc.descriptionEuropean Integrated Project Ultra Low CO2 Steelmaking (Ulcos)
dc.descriptionCIRAD, UMR Eco&Sols, Montpellier, France
dc.descriptionUNESP, Dept Forest Sci, Botucatu, SP, Brazil
dc.descriptionUniv Sao Paulo, ESALQ, Dept Forest Sci, Piracicaba, Brazil
dc.descriptionUniv Estadual Mato Grosso Sul, UEMS, Dept Forest Sci, Cassilandia, Brazil
dc.descriptionUniv Sao Paulo, CENA, Piracicaba, Brazil
dc.descriptionIRD, UMR Eco&Sols, Montpellier, France
dc.descriptionN Carolina State Univ, Dept Forestry & Environm Resources, Raleigh, NC 27695 USA
dc.descriptionUniv Sao Paulo, Dept Atmospher Sci, BR-09500900 Sao Paulo, Brazil
dc.descriptionUNESP, Dept Forest Sci, Botucatu, SP, Brazil
dc.descriptionEuropean Integrated Project Ultra Low CO2 Steelmaking (Ulcos)515960
dc.format12
dc.languageeng
dc.publisherFrontiers Research Foundation
dc.relationFrontiers In Plant Science
dc.relation3.678
dc.rightsAcesso aberto
dc.sourceWeb of Science
dc.subjectroot front
dc.subjectroot growth
dc.subjectroot density
dc.subjectEucalyptus
dc.subjectforest
dc.subjectoxisol
dc.subjecttropical tree
dc.subjectBrazil
dc.titleDynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations
dc.typeArtigo


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