Full-rotation carbon, water and energy fluxes in a tropical eucalypt plantation
Eucalyptus plantations in Brazil are among the most productive forests of the world, reaching mean annual increments of about 50 m3 ha-1 yr-1 over short (6 - 7 yrs) rotations. We continuously monitored water vapor, CO2 and energy flux through the eddy-covariance method over a 9 year-period in southeastern Brazil. Tree growth, Leaf Area Index (LAI), water table depth, and soil water content (SWC) down to 10 m depth were also monitored. Rooting depth and vertical fine root distribution were assessed at various ages. Mean annual evapotranspiration (AET; 1383 mm yr-1) represented 90% of the annual precipitations (P; 1539 mm yr-1). AET reached maximum values (1598 mm yr-1) about 2-3 years after planting (a.p) when LAI peaked and when deep rooting (about 15 m deep 2.5 yrs a.p) provided access to the large amount of water stored in deep soil layers during the first months after clear-cutting and replanting. Most (88%) of the available energy (3852 MJ yr-1) was partitioned to the evaporation process (latent heat fluxes), with very low sensible heat fluxes over the rotation, except after harvesting and replanting when LAI was low, and later in the rotation during dry events. Deep drainage after harvest of the first stand allowed the water table to rise from -18 to -12 m over the first 2 years after replanting. Both measurements of SWC and model simulations showed that deep water storage and subsequent uptake played a major role in supporting the very high wood production and dampening seasonal droughts.
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Subjects: | K10 - Production forestière, F62 - Physiologie végétale - Croissance et développement, F60 - Physiologie et biochimie végétale, U10 - Informatique, mathématiques et statistiques, Eucalyptus, plantation forestière, croissance, évapotranspiration, résistance à la sécheresse, http://aims.fao.org/aos/agrovoc/c_2683, http://aims.fao.org/aos/agrovoc/c_3048, http://aims.fao.org/aos/agrovoc/c_3394, http://aims.fao.org/aos/agrovoc/c_2741, http://aims.fao.org/aos/agrovoc/c_2392, http://aims.fao.org/aos/agrovoc/c_1070, |
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dig-cirad-fr-5944092024-01-29T02:27:37Z http://agritrop.cirad.fr/594409/ http://agritrop.cirad.fr/594409/ Full-rotation carbon, water and energy fluxes in a tropical eucalypt plantation. Nouvellon Yann, Stape Jose Luiz, Le Maire Guerric, Bonnefond Jean-Marc, Guillemot Joannès, Christina Mathias, Bouillet Jean-Pierre, Campoe Otávio, Laclau Jean-Paul. 2019. Pesquisa Florestal Brasileira (39), n.spéc., Résumé : 314. IUFRO World Congress 2019 "Forest Research and Cooperation for Sustainable Development". 25, Curitiba, Brésil, 29 Septembre 2019/5 Octobre 2019.https://doi.org/10.4336/2019.pfb.39e201902043 <https://doi.org/10.4336/2019.pfb.39e201902043> Full-rotation carbon, water and energy fluxes in a tropical eucalypt plantation Nouvellon, Yann Stape, Jose Luiz Le Maire, Guerric Bonnefond, Jean-Marc Guillemot, Joannès Christina, Mathias Bouillet, Jean-Pierre Campoe, Otávio Laclau, Jean-Paul eng 2019 XXV IUFRO World Congress Forest Research and Cooperation for Sustainable Development Pesquisa Florestal Brasileira K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F60 - Physiologie et biochimie végétale U10 - Informatique, mathématiques et statistiques Eucalyptus plantation forestière croissance évapotranspiration résistance à la sécheresse http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_2741 http://aims.fao.org/aos/agrovoc/c_2392 Brésil http://aims.fao.org/aos/agrovoc/c_1070 Eucalyptus plantations in Brazil are among the most productive forests of the world, reaching mean annual increments of about 50 m3 ha-1 yr-1 over short (6 - 7 yrs) rotations. We continuously monitored water vapor, CO2 and energy flux through the eddy-covariance method over a 9 year-period in southeastern Brazil. Tree growth, Leaf Area Index (LAI), water table depth, and soil water content (SWC) down to 10 m depth were also monitored. Rooting depth and vertical fine root distribution were assessed at various ages. Mean annual evapotranspiration (AET; 1383 mm yr-1) represented 90% of the annual precipitations (P; 1539 mm yr-1). AET reached maximum values (1598 mm yr-1) about 2-3 years after planting (a.p) when LAI peaked and when deep rooting (about 15 m deep 2.5 yrs a.p) provided access to the large amount of water stored in deep soil layers during the first months after clear-cutting and replanting. Most (88%) of the available energy (3852 MJ yr-1) was partitioned to the evaporation process (latent heat fluxes), with very low sensible heat fluxes over the rotation, except after harvesting and replanting when LAI was low, and later in the rotation during dry events. Deep drainage after harvest of the first stand allowed the water table to rise from -18 to -12 m over the first 2 years after replanting. Both measurements of SWC and model simulations showed that deep water storage and subsequent uptake played a major role in supporting the very high wood production and dampening seasonal droughts. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/594409/7/ID594409.pdf text cc_by_nc_nd info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ https://doi.org/10.4336/2019.pfb.39e201902043 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.4336/2019.pfb.39e201902043 info:eu-repo/semantics/reference/purl/https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/2043/900 info:eu-repo/semantics/reference/purl/https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/2043/ |
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K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F60 - Physiologie et biochimie végétale U10 - Informatique, mathématiques et statistiques Eucalyptus plantation forestière croissance évapotranspiration résistance à la sécheresse http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_2741 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1070 K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F60 - Physiologie et biochimie végétale U10 - Informatique, mathématiques et statistiques Eucalyptus plantation forestière croissance évapotranspiration résistance à la sécheresse http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_2741 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1070 |
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K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F60 - Physiologie et biochimie végétale U10 - Informatique, mathématiques et statistiques Eucalyptus plantation forestière croissance évapotranspiration résistance à la sécheresse http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_2741 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1070 K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F60 - Physiologie et biochimie végétale U10 - Informatique, mathématiques et statistiques Eucalyptus plantation forestière croissance évapotranspiration résistance à la sécheresse http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_2741 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1070 Nouvellon, Yann Stape, Jose Luiz Le Maire, Guerric Bonnefond, Jean-Marc Guillemot, Joannès Christina, Mathias Bouillet, Jean-Pierre Campoe, Otávio Laclau, Jean-Paul Full-rotation carbon, water and energy fluxes in a tropical eucalypt plantation |
description |
Eucalyptus plantations in Brazil are among the most productive forests of the world, reaching mean annual increments of about 50 m3 ha-1 yr-1 over short (6 - 7 yrs) rotations. We continuously monitored water vapor, CO2 and energy flux through the eddy-covariance method over a 9 year-period in southeastern Brazil. Tree growth, Leaf Area Index (LAI), water table depth, and soil water content (SWC) down to 10 m depth were also monitored. Rooting depth and vertical fine root distribution were assessed at various ages. Mean annual evapotranspiration (AET; 1383 mm yr-1) represented 90% of the annual precipitations (P; 1539 mm yr-1). AET reached maximum values (1598 mm yr-1) about 2-3 years after planting (a.p) when LAI peaked and when deep rooting (about 15 m deep 2.5 yrs a.p) provided access to the large amount of water stored in deep soil layers during the first months after clear-cutting and replanting. Most (88%) of the available energy (3852 MJ yr-1) was partitioned to the evaporation process (latent heat fluxes), with very low sensible heat fluxes over the rotation, except after harvesting and replanting when LAI was low, and later in the rotation during dry events. Deep drainage after harvest of the first stand allowed the water table to rise from -18 to -12 m over the first 2 years after replanting. Both measurements of SWC and model simulations showed that deep water storage and subsequent uptake played a major role in supporting the very high wood production and dampening seasonal droughts. |
format |
article |
topic_facet |
K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F60 - Physiologie et biochimie végétale U10 - Informatique, mathématiques et statistiques Eucalyptus plantation forestière croissance évapotranspiration résistance à la sécheresse http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_2741 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_1070 |
author |
Nouvellon, Yann Stape, Jose Luiz Le Maire, Guerric Bonnefond, Jean-Marc Guillemot, Joannès Christina, Mathias Bouillet, Jean-Pierre Campoe, Otávio Laclau, Jean-Paul |
author_facet |
Nouvellon, Yann Stape, Jose Luiz Le Maire, Guerric Bonnefond, Jean-Marc Guillemot, Joannès Christina, Mathias Bouillet, Jean-Pierre Campoe, Otávio Laclau, Jean-Paul |
author_sort |
Nouvellon, Yann |
title |
Full-rotation carbon, water and energy fluxes in a tropical eucalypt plantation |
title_short |
Full-rotation carbon, water and energy fluxes in a tropical eucalypt plantation |
title_full |
Full-rotation carbon, water and energy fluxes in a tropical eucalypt plantation |
title_fullStr |
Full-rotation carbon, water and energy fluxes in a tropical eucalypt plantation |
title_full_unstemmed |
Full-rotation carbon, water and energy fluxes in a tropical eucalypt plantation |
title_sort |
full-rotation carbon, water and energy fluxes in a tropical eucalypt plantation |
url |
http://agritrop.cirad.fr/594409/ http://agritrop.cirad.fr/594409/7/ID594409.pdf |
work_keys_str_mv |
AT nouvellonyann fullrotationcarbonwaterandenergyfluxesinatropicaleucalyptplantation AT stapejoseluiz fullrotationcarbonwaterandenergyfluxesinatropicaleucalyptplantation AT lemaireguerric fullrotationcarbonwaterandenergyfluxesinatropicaleucalyptplantation AT bonnefondjeanmarc fullrotationcarbonwaterandenergyfluxesinatropicaleucalyptplantation AT guillemotjoannes fullrotationcarbonwaterandenergyfluxesinatropicaleucalyptplantation AT christinamathias fullrotationcarbonwaterandenergyfluxesinatropicaleucalyptplantation AT bouilletjeanpierre fullrotationcarbonwaterandenergyfluxesinatropicaleucalyptplantation AT campoeotavio fullrotationcarbonwaterandenergyfluxesinatropicaleucalyptplantation AT laclaujeanpaul fullrotationcarbonwaterandenergyfluxesinatropicaleucalyptplantation |
_version_ |
1792499863905107968 |