CO2 and water fluxes over a rubber tree ecosystem
In Thailand, rubber is the major tree crop covering more than 2 millions hectares. Its impact on environment, and particularly CO2 balance and water use, is a major issue. A complete flux-measuring system has been installed in a 13 years old tubber plantation (clone RRIM 600) in eastern Thailand (Chachoengsao Rubber Research Center, RRIT-DOA) in 2006. Carbon fluxes of rubber plantation ecosystem are continuously measured by eddy-covariance method (CO2 exchanges between the ecosystem and the atmosphere). Evapo-transpiration (ET) are measured by eddy-covariance and water balance together and partitioned between tree transpiration and soil evaporation. Sapflow is measured by heat dissipation method (Granier 1985, 1987) using home-made 20 mm-long radial probes, continuously heated (0.2 W). Meanwhile, amounts of C stored in the trees are evaluated by measuring biomass increment along the life cycle of the plantation, in combination with estimations of the carbon content of the different compartments. These measurements will provide the annual balance of C within plantations at different ages. Results obtained at ecosystem scale by these methods will be compared to gas exchanges measured at the level of the different compartments (canopy, trunk, root system, soil...). Particularly, Farquhar's photosynthesis model (Farquhar et al. 1980) is parameterized across the canopy. Leaf water potential, sapflow and canopy transpiration are computed to calculate canopy conductivity. Thereby, validated CO2 and H2O fluxes will be used to model gas exchanges of rubber plantation ecosystem according to climate and other environmental parameters as well as crop management. (Texte intégral)
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Subjects: | F60 - Physiologie et biochimie végétale, F40 - Écologie végétale, Hevea brasiliensis, plantations, dioxyde de carbone, eau, mesure (activité), écosystème, échange gazeux, biomasse, http://aims.fao.org/aos/agrovoc/c_3589, http://aims.fao.org/aos/agrovoc/c_5990, http://aims.fao.org/aos/agrovoc/c_1302, http://aims.fao.org/aos/agrovoc/c_8309, http://aims.fao.org/aos/agrovoc/c_4668, http://aims.fao.org/aos/agrovoc/c_2482, http://aims.fao.org/aos/agrovoc/c_11098, http://aims.fao.org/aos/agrovoc/c_926, http://aims.fao.org/aos/agrovoc/c_7701, |
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dig-cirad-fr-5427142024-01-28T15:32:21Z http://agritrop.cirad.fr/542714/ http://agritrop.cirad.fr/542714/ CO2 and water fluxes over a rubber tree ecosystem. Thaler Philippe, Siripornpakdeekul Pongpan, Kasemsap Poonpipope, Kunjet Summit, Chairungsee Naruenat, Kositsup Boonthida, Roupsard Olivier, Chantuma Arak, Bonnefond Jean-Marc. 2007. In : AsiaFlux Workshop, 19-22 October 2007, Taoyuan, Taiwan. s.l. : s.n., Résumé, 64. International Workshop on AsiaFlux, Taoyuan, Taïwan / (République de Chine (Taïwan)), 19 Octobre 2007/22 Octobre 2007. CO2 and water fluxes over a rubber tree ecosystem Thaler, Philippe Siripornpakdeekul, Pongpan Kasemsap, Poonpipope Kunjet, Summit Chairungsee, Naruenat Kositsup, Boonthida Roupsard, Olivier Chantuma, Arak Bonnefond, Jean-Marc eng 2007 s.n. AsiaFlux Workshop, 19-22 October 2007, Taoyuan, Taiwan F60 - Physiologie et biochimie végétale F40 - Écologie végétale Hevea brasiliensis plantations dioxyde de carbone eau mesure (activité) écosystème échange gazeux biomasse http://aims.fao.org/aos/agrovoc/c_3589 http://aims.fao.org/aos/agrovoc/c_5990 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8309 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_11098 http://aims.fao.org/aos/agrovoc/c_926 Thaïlande http://aims.fao.org/aos/agrovoc/c_7701 In Thailand, rubber is the major tree crop covering more than 2 millions hectares. Its impact on environment, and particularly CO2 balance and water use, is a major issue. A complete flux-measuring system has been installed in a 13 years old tubber plantation (clone RRIM 600) in eastern Thailand (Chachoengsao Rubber Research Center, RRIT-DOA) in 2006. Carbon fluxes of rubber plantation ecosystem are continuously measured by eddy-covariance method (CO2 exchanges between the ecosystem and the atmosphere). Evapo-transpiration (ET) are measured by eddy-covariance and water balance together and partitioned between tree transpiration and soil evaporation. Sapflow is measured by heat dissipation method (Granier 1985, 1987) using home-made 20 mm-long radial probes, continuously heated (0.2 W). Meanwhile, amounts of C stored in the trees are evaluated by measuring biomass increment along the life cycle of the plantation, in combination with estimations of the carbon content of the different compartments. These measurements will provide the annual balance of C within plantations at different ages. Results obtained at ecosystem scale by these methods will be compared to gas exchanges measured at the level of the different compartments (canopy, trunk, root system, soil...). Particularly, Farquhar's photosynthesis model (Farquhar et al. 1980) is parameterized across the canopy. Leaf water potential, sapflow and canopy transpiration are computed to calculate canopy conductivity. Thereby, validated CO2 and H2O fluxes will be used to model gas exchanges of rubber plantation ecosystem according to climate and other environmental parameters as well as crop management. (Texte intégral) conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/542714/1/document_542714.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=199094 |
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F60 - Physiologie et biochimie végétale F40 - Écologie végétale Hevea brasiliensis plantations dioxyde de carbone eau mesure (activité) écosystème échange gazeux biomasse http://aims.fao.org/aos/agrovoc/c_3589 http://aims.fao.org/aos/agrovoc/c_5990 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8309 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_11098 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_7701 F60 - Physiologie et biochimie végétale F40 - Écologie végétale Hevea brasiliensis plantations dioxyde de carbone eau mesure (activité) écosystème échange gazeux biomasse http://aims.fao.org/aos/agrovoc/c_3589 http://aims.fao.org/aos/agrovoc/c_5990 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8309 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_11098 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_7701 |
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F60 - Physiologie et biochimie végétale F40 - Écologie végétale Hevea brasiliensis plantations dioxyde de carbone eau mesure (activité) écosystème échange gazeux biomasse http://aims.fao.org/aos/agrovoc/c_3589 http://aims.fao.org/aos/agrovoc/c_5990 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8309 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_11098 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_7701 F60 - Physiologie et biochimie végétale F40 - Écologie végétale Hevea brasiliensis plantations dioxyde de carbone eau mesure (activité) écosystème échange gazeux biomasse http://aims.fao.org/aos/agrovoc/c_3589 http://aims.fao.org/aos/agrovoc/c_5990 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8309 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_11098 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_7701 Thaler, Philippe Siripornpakdeekul, Pongpan Kasemsap, Poonpipope Kunjet, Summit Chairungsee, Naruenat Kositsup, Boonthida Roupsard, Olivier Chantuma, Arak Bonnefond, Jean-Marc CO2 and water fluxes over a rubber tree ecosystem |
description |
In Thailand, rubber is the major tree crop covering more than 2 millions hectares. Its impact on environment, and particularly CO2 balance and water use, is a major issue. A complete flux-measuring system has been installed in a 13 years old tubber plantation (clone RRIM 600) in eastern Thailand (Chachoengsao Rubber Research Center, RRIT-DOA) in 2006. Carbon fluxes of rubber plantation ecosystem are continuously measured by eddy-covariance method (CO2 exchanges between the ecosystem and the atmosphere). Evapo-transpiration (ET) are measured by eddy-covariance and water balance together and partitioned between tree transpiration and soil evaporation. Sapflow is measured by heat dissipation method (Granier 1985, 1987) using home-made 20 mm-long radial probes, continuously heated (0.2 W). Meanwhile, amounts of C stored in the trees are evaluated by measuring biomass increment along the life cycle of the plantation, in combination with estimations of the carbon content of the different compartments. These measurements will provide the annual balance of C within plantations at different ages. Results obtained at ecosystem scale by these methods will be compared to gas exchanges measured at the level of the different compartments (canopy, trunk, root system, soil...). Particularly, Farquhar's photosynthesis model (Farquhar et al. 1980) is parameterized across the canopy. Leaf water potential, sapflow and canopy transpiration are computed to calculate canopy conductivity. Thereby, validated CO2 and H2O fluxes will be used to model gas exchanges of rubber plantation ecosystem according to climate and other environmental parameters as well as crop management. (Texte intégral) |
format |
conference_item |
topic_facet |
F60 - Physiologie et biochimie végétale F40 - Écologie végétale Hevea brasiliensis plantations dioxyde de carbone eau mesure (activité) écosystème échange gazeux biomasse http://aims.fao.org/aos/agrovoc/c_3589 http://aims.fao.org/aos/agrovoc/c_5990 http://aims.fao.org/aos/agrovoc/c_1302 http://aims.fao.org/aos/agrovoc/c_8309 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_11098 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_7701 |
author |
Thaler, Philippe Siripornpakdeekul, Pongpan Kasemsap, Poonpipope Kunjet, Summit Chairungsee, Naruenat Kositsup, Boonthida Roupsard, Olivier Chantuma, Arak Bonnefond, Jean-Marc |
author_facet |
Thaler, Philippe Siripornpakdeekul, Pongpan Kasemsap, Poonpipope Kunjet, Summit Chairungsee, Naruenat Kositsup, Boonthida Roupsard, Olivier Chantuma, Arak Bonnefond, Jean-Marc |
author_sort |
Thaler, Philippe |
title |
CO2 and water fluxes over a rubber tree ecosystem |
title_short |
CO2 and water fluxes over a rubber tree ecosystem |
title_full |
CO2 and water fluxes over a rubber tree ecosystem |
title_fullStr |
CO2 and water fluxes over a rubber tree ecosystem |
title_full_unstemmed |
CO2 and water fluxes over a rubber tree ecosystem |
title_sort |
co2 and water fluxes over a rubber tree ecosystem |
publisher |
s.n. |
url |
http://agritrop.cirad.fr/542714/ http://agritrop.cirad.fr/542714/1/document_542714.pdf |
work_keys_str_mv |
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