Consequences of clear-cutting and drought on fine root dynamics down to 17 m in coppice-managed eucalypt plantations
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.foreco.2019.05.010 http://hdl.handle.net/11449/190307 |
Resumo: | Improving our understanding of the spatiotemporal dynamics of fine roots in deep soil layers is of utter importance to manage tropical planted forests in a context of climate change. Our study aimed to assess the effect of clear-cutting and drought on fine-root dynamics down to the water table in Brazilian ferralsol under eucalypt plantations conducted in coppice. Fine roots (i.e. diameter <2 mm)were sampled down to 17 m deep in a throughfall exclusion experiment comparing stands with 37% of throughfall excluded by plastic sheets (−W)and stands without rain exclusion (+W). Root dynamics were studied using minirhizotron in two permanent pits down to 17 m deep, over 1 year before clear-cutting, then over 2 years in coppice, as well as down to 4 m deep in a non-harvested plot (NH)serving as a control. After harvesting, a spectacular fine root growth of trees conducted in coppice occurred in very deep soil layers (>13 m)and, surprisingly, root mortality remained extremely low whatever the depth and the treatment. Total fine-root biomass in coppice down to 17 m depth was 1266 and 1017 g m−2 in +W and −W, respectively, at 1.5 year after the clear-cut and was 1078 g m−2 in NH 7.5 years after planting. Specific root length and specific root area were about 15% higher in −W than in +W. Proliferation of fine roots at great depths could be an adaptive mechanism for tree survival, enhancing the access to water stored in the subsoil. The root system established before clear-cutting provides access to water stored in very deep layers that probably contribute to mitigate the risk of tree mortality during prolonged drought periods when the eucalypt plantations is conducted in coppice after the clear-cut. |
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Consequences of clear-cutting and drought on fine root dynamics down to 17 m in coppice-managed eucalypt plantationsBrazilCoppiceDeep ferralsol profileDeep root growthEucalyptus grandisMinirhizotronThroughfall exclusionImproving our understanding of the spatiotemporal dynamics of fine roots in deep soil layers is of utter importance to manage tropical planted forests in a context of climate change. Our study aimed to assess the effect of clear-cutting and drought on fine-root dynamics down to the water table in Brazilian ferralsol under eucalypt plantations conducted in coppice. Fine roots (i.e. diameter <2 mm)were sampled down to 17 m deep in a throughfall exclusion experiment comparing stands with 37% of throughfall excluded by plastic sheets (−W)and stands without rain exclusion (+W). Root dynamics were studied using minirhizotron in two permanent pits down to 17 m deep, over 1 year before clear-cutting, then over 2 years in coppice, as well as down to 4 m deep in a non-harvested plot (NH)serving as a control. After harvesting, a spectacular fine root growth of trees conducted in coppice occurred in very deep soil layers (>13 m)and, surprisingly, root mortality remained extremely low whatever the depth and the treatment. Total fine-root biomass in coppice down to 17 m depth was 1266 and 1017 g m−2 in +W and −W, respectively, at 1.5 year after the clear-cut and was 1078 g m−2 in NH 7.5 years after planting. Specific root length and specific root area were about 15% higher in −W than in +W. Proliferation of fine roots at great depths could be an adaptive mechanism for tree survival, enhancing the access to water stored in the subsoil. The root system established before clear-cutting provides access to water stored in very deep layers that probably contribute to mitigate the risk of tree mortality during prolonged drought periods when the eucalypt plantations is conducted in coppice after the clear-cut.Centre de Coopération Internationale en Recherche Agronomique pour le DéveloppementFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)UNESP-São Paulo State University School of Agricultural SciencesEco&Sols Univ Montpellier CIRAD INRA IRD Montpellier SupAgroCIRAD UMR Eco&SolsESALQ Forest Science Department Escola Superior de Agricultura Luiz de Queiroz Universidade de São PauloESALQ Soil Science Department Escola Superior de Agricultura Luiz de Queiroz Universidade de São PauloIRD UMR Eco&Sols LMI IESOL, BP 1386UNESP-São Paulo State University School of Agricultural SciencesFAPESP: 2015/24911-8Universidade Estadual Paulista (Unesp)Montpellier SupAgroUMR Eco&SolsUniversidade de São Paulo (USP)LMI IESOLGermon, Amandine [UNESP]Jourdan, ChristopheBordron, BrunoRobin, AgnèsNouvellon, YannChapuis-Lardy, Lydiede Moraes Gonçalves, José LeonardoPradier, CélineGuerrini, Iraê Amaral [UNESP]Laclau, Jean-Paul [UNESP]2019-10-06T17:08:56Z2019-10-06T17:08:56Z2019-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article48-59http://dx.doi.org/10.1016/j.foreco.2019.05.010Forest Ecology and Management, v. 445, p. 48-59.0378-1127http://hdl.handle.net/11449/19030710.1016/j.foreco.2019.05.0102-s2.0-85065224265Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengForest Ecology and Managementinfo:eu-repo/semantics/openAccess2024-04-30T19:28:42Zoai:repositorio.unesp.br:11449/190307Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-30T19:28:42Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Consequences of clear-cutting and drought on fine root dynamics down to 17 m in coppice-managed eucalypt plantations |
title |
Consequences of clear-cutting and drought on fine root dynamics down to 17 m in coppice-managed eucalypt plantations |
spellingShingle |
Consequences of clear-cutting and drought on fine root dynamics down to 17 m in coppice-managed eucalypt plantations Germon, Amandine [UNESP] Brazil Coppice Deep ferralsol profile Deep root growth Eucalyptus grandis Minirhizotron Throughfall exclusion |
title_short |
Consequences of clear-cutting and drought on fine root dynamics down to 17 m in coppice-managed eucalypt plantations |
title_full |
Consequences of clear-cutting and drought on fine root dynamics down to 17 m in coppice-managed eucalypt plantations |
title_fullStr |
Consequences of clear-cutting and drought on fine root dynamics down to 17 m in coppice-managed eucalypt plantations |
title_full_unstemmed |
Consequences of clear-cutting and drought on fine root dynamics down to 17 m in coppice-managed eucalypt plantations |
title_sort |
Consequences of clear-cutting and drought on fine root dynamics down to 17 m in coppice-managed eucalypt plantations |
author |
Germon, Amandine [UNESP] |
author_facet |
Germon, Amandine [UNESP] Jourdan, Christophe Bordron, Bruno Robin, Agnès Nouvellon, Yann Chapuis-Lardy, Lydie de Moraes Gonçalves, José Leonardo Pradier, Céline Guerrini, Iraê Amaral [UNESP] Laclau, Jean-Paul [UNESP] |
author_role |
author |
author2 |
Jourdan, Christophe Bordron, Bruno Robin, Agnès Nouvellon, Yann Chapuis-Lardy, Lydie de Moraes Gonçalves, José Leonardo Pradier, Céline Guerrini, Iraê Amaral [UNESP] Laclau, Jean-Paul [UNESP] |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Montpellier SupAgro UMR Eco&Sols Universidade de São Paulo (USP) LMI IESOL |
dc.contributor.author.fl_str_mv |
Germon, Amandine [UNESP] Jourdan, Christophe Bordron, Bruno Robin, Agnès Nouvellon, Yann Chapuis-Lardy, Lydie de Moraes Gonçalves, José Leonardo Pradier, Céline Guerrini, Iraê Amaral [UNESP] Laclau, Jean-Paul [UNESP] |
dc.subject.por.fl_str_mv |
Brazil Coppice Deep ferralsol profile Deep root growth Eucalyptus grandis Minirhizotron Throughfall exclusion |
topic |
Brazil Coppice Deep ferralsol profile Deep root growth Eucalyptus grandis Minirhizotron Throughfall exclusion |
description |
Improving our understanding of the spatiotemporal dynamics of fine roots in deep soil layers is of utter importance to manage tropical planted forests in a context of climate change. Our study aimed to assess the effect of clear-cutting and drought on fine-root dynamics down to the water table in Brazilian ferralsol under eucalypt plantations conducted in coppice. Fine roots (i.e. diameter <2 mm)were sampled down to 17 m deep in a throughfall exclusion experiment comparing stands with 37% of throughfall excluded by plastic sheets (−W)and stands without rain exclusion (+W). Root dynamics were studied using minirhizotron in two permanent pits down to 17 m deep, over 1 year before clear-cutting, then over 2 years in coppice, as well as down to 4 m deep in a non-harvested plot (NH)serving as a control. After harvesting, a spectacular fine root growth of trees conducted in coppice occurred in very deep soil layers (>13 m)and, surprisingly, root mortality remained extremely low whatever the depth and the treatment. Total fine-root biomass in coppice down to 17 m depth was 1266 and 1017 g m−2 in +W and −W, respectively, at 1.5 year after the clear-cut and was 1078 g m−2 in NH 7.5 years after planting. Specific root length and specific root area were about 15% higher in −W than in +W. Proliferation of fine roots at great depths could be an adaptive mechanism for tree survival, enhancing the access to water stored in the subsoil. The root system established before clear-cutting provides access to water stored in very deep layers that probably contribute to mitigate the risk of tree mortality during prolonged drought periods when the eucalypt plantations is conducted in coppice after the clear-cut. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T17:08:56Z 2019-10-06T17:08:56Z 2019-08-01 |
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/10.1016/j.foreco.2019.05.010 Forest Ecology and Management, v. 445, p. 48-59. 0378-1127 http://hdl.handle.net/11449/190307 10.1016/j.foreco.2019.05.010 2-s2.0-85065224265 |
url |
http://dx.doi.org/10.1016/j.foreco.2019.05.010 http://hdl.handle.net/11449/190307 |
identifier_str_mv |
Forest Ecology and Management, v. 445, p. 48-59. 0378-1127 10.1016/j.foreco.2019.05.010 2-s2.0-85065224265 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Forest Ecology and Management |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
48-59 |
dc.source.none.fl_str_mv |
Scopus 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_ |
1799965104263921664 |