Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations
Autor(a) principal: | |
---|---|
Data de Publicação: | 2013 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
DOI: | 10.3389/fpls.2013.00243 |
Texto Completo: | http://dx.doi.org/10.3389/fpls.2013.00243 http://hdl.handle.net/11449/113282 |
Resumo: | Although 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. |
id |
UNSP_a439075fa364b6ae4c0a928b7c5bf06f |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/113282 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantationsroot frontroot growthroot densityEucalyptusforestoxisoltropical treeBrazilAlthough 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.European Integrated Project Ultra Low CO2 Steelmaking (Ulcos)CIRAD, UMR Eco&Sols, Montpellier, FranceUNESP, Dept Forest Sci, Botucatu, SP, BrazilUniv Sao Paulo, ESALQ, Dept Forest Sci, Piracicaba, BrazilUniv Estadual Mato Grosso Sul, UEMS, Dept Forest Sci, Cassilandia, BrazilUniv Sao Paulo, CENA, Piracicaba, BrazilIRD, UMR Eco&Sols, Montpellier, FranceN Carolina State Univ, Dept Forestry & Environm Resources, Raleigh, NC 27695 USAUniv Sao Paulo, Dept Atmospher Sci, BR-09500900 Sao Paulo, BrazilUNESP, Dept Forest Sci, Botucatu, SP, BrazilEuropean Integrated Project Ultra Low CO2 Steelmaking (Ulcos)515960Frontiers Research FoundationCIRADUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Universidade Estadual de Mato Grosso do Sul (UEMS)IRDN Carolina State UnivLaclau, Jean-Paul [UNESP]Silva, Eder A. daLambais, George RodriguesBernoux, Martialle Maire, GuerricStape, José Luiz [UNESP]Bouillet, Jean-PierreMoraes Goncalves, Jose L. deJourdan, ChristopheNouvellon, Yann2014-12-03T13:11:35Z2014-12-03T13:11:35Z2013-07-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article12application/pdfhttp://dx.doi.org/10.3389/fpls.2013.00243Frontiers In Plant Science. Lausanne: Frontiers Research Foundation, v. 4, 12 p., 2013.1664-462Xhttp://hdl.handle.net/11449/11328210.3389/fpls.2013.00243WOS:000330727300001WOS000330727300001.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengFrontiers In Plant Science3.678info:eu-repo/semantics/openAccess2024-04-30T13:11:02Zoai:repositorio.unesp.br:11449/113282Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:05:12.711942Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations |
title |
Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations |
spellingShingle |
Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations Laclau, Jean-Paul [UNESP] root front root growth root density Eucalyptus forest oxisol tropical tree Brazil Laclau, Jean-Paul [UNESP] root front root growth root density Eucalyptus forest oxisol tropical tree Brazil |
title_short |
Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations |
title_full |
Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations |
title_fullStr |
Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations |
title_full_unstemmed |
Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations |
title_sort |
Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations |
author |
Laclau, Jean-Paul [UNESP] |
author_facet |
Laclau, Jean-Paul [UNESP] Laclau, Jean-Paul [UNESP] Silva, Eder A. da Lambais, George Rodrigues Bernoux, Martial le Maire, Guerric Stape, José Luiz [UNESP] Bouillet, Jean-Pierre Moraes Goncalves, Jose L. de Jourdan, Christophe Nouvellon, Yann Silva, Eder A. da Lambais, George Rodrigues Bernoux, Martial le Maire, Guerric Stape, José Luiz [UNESP] Bouillet, Jean-Pierre Moraes Goncalves, Jose L. de Jourdan, Christophe Nouvellon, Yann |
author_role |
author |
author2 |
Silva, Eder A. da Lambais, George Rodrigues Bernoux, Martial le Maire, Guerric Stape, José Luiz [UNESP] Bouillet, Jean-Pierre Moraes Goncalves, Jose L. de Jourdan, Christophe Nouvellon, Yann |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
CIRAD Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) Universidade Estadual de Mato Grosso do Sul (UEMS) IRD N Carolina State Univ |
dc.contributor.author.fl_str_mv |
Laclau, Jean-Paul [UNESP] Silva, Eder A. da Lambais, George Rodrigues Bernoux, Martial le Maire, Guerric Stape, José Luiz [UNESP] Bouillet, Jean-Pierre Moraes Goncalves, Jose L. de Jourdan, Christophe Nouvellon, Yann |
dc.subject.por.fl_str_mv |
root front root growth root density Eucalyptus forest oxisol tropical tree Brazil |
topic |
root front root growth root density Eucalyptus forest oxisol tropical tree Brazil |
description |
Although 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. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-07-09 2014-12-03T13:11:35Z 2014-12-03T13:11:35Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.3389/fpls.2013.00243 Frontiers In Plant Science. Lausanne: Frontiers Research Foundation, v. 4, 12 p., 2013. 1664-462X http://hdl.handle.net/11449/113282 10.3389/fpls.2013.00243 WOS:000330727300001 WOS000330727300001.pdf |
url |
http://dx.doi.org/10.3389/fpls.2013.00243 http://hdl.handle.net/11449/113282 |
identifier_str_mv |
Frontiers In Plant Science. Lausanne: Frontiers Research Foundation, v. 4, 12 p., 2013. 1664-462X 10.3389/fpls.2013.00243 WOS:000330727300001 WOS000330727300001.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Frontiers In Plant Science 3.678 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
12 application/pdf |
dc.publisher.none.fl_str_mv |
Frontiers Research Foundation |
publisher.none.fl_str_mv |
Frontiers Research Foundation |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1822230213431394304 |
dc.identifier.doi.none.fl_str_mv |
10.3389/fpls.2013.00243 |