A simple framework to analyze water constraints on seasonal transpiration in rubber tree (Hevea brasiliensis) plantations
Climate change and fast extension in climatically suboptimal areas threaten the sustainability of rubber tree cultivation. A simple framework based on reduction factors of potential transpiration was tested to evaluate the water constraints on seasonal transpiration in tropical sub-humid climates, a...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2015-01-01
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| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00753/full |
| _version_ | 1818691234902835200 |
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| author | Jessada eSopharat Frederic eGay Philippe eThaler Sayan eSdoodee Supat eIsarangkool Na Ayutthaya Charlchai eTanavud Claude eHammecker Frederic C. Do |
| author_facet | Jessada eSopharat Frederic eGay Philippe eThaler Sayan eSdoodee Supat eIsarangkool Na Ayutthaya Charlchai eTanavud Claude eHammecker Frederic C. Do |
| author_sort | Jessada eSopharat |
| collection | DOAJ |
| description | Climate change and fast extension in climatically suboptimal areas threaten the sustainability of rubber tree cultivation. A simple framework based on reduction factors of potential transpiration was tested to evaluate the water constraints on seasonal transpiration in tropical sub-humid climates, according pedoclimatic conditions. We selected a representative, mature stand in a drought-prone area. Tree transpiration, evaporative demand and soil water availability were measured every day over 15 months. The results showed that basic relationships with evaporative demand, leaf area index and soil water availability were globally supported. However the implementation of a regulation of transpiration at high evaporative demand whatever soil water availability was necessary to avoid large overestimates of transpiration. The details of regulation were confirmed by the analysis of canopy conductance response to vapour pressure deficit. The final objective of providing hierarchy between the main regulation factors of seasonal and annual transpiration was achieved. In the tested environmental conditions, the impact of atmospheric drought appeared larger importance than soil drought contrary to expectations. Our results support the interest in simple models to provide a first diagnosis of water constraints on transpiration with limited data, and to help decision making towards more sustainable rubber plantations. |
| first_indexed | 2024-12-17T12:38:40Z |
| format | Article |
| id | doaj.art-ce4c6e002244495dac1386f4ae5b04eb |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-17T12:38:40Z |
| publishDate | 2015-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-ce4c6e002244495dac1386f4ae5b04eb2022-12-21T21:48:09ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2015-01-01510.3389/fpls.2014.00753120514A simple framework to analyze water constraints on seasonal transpiration in rubber tree (Hevea brasiliensis) plantationsJessada eSopharat0Frederic eGay1Philippe eThaler2Sayan eSdoodee3Supat eIsarangkool Na Ayutthaya4Charlchai eTanavud5Claude eHammecker6Frederic C. Do7Prince of Songkla UniversityCIRADCIRADPrince of Songkla UniversityKhon Kaen UniversityPrince of Songkla UniversityIRDIRDClimate change and fast extension in climatically suboptimal areas threaten the sustainability of rubber tree cultivation. A simple framework based on reduction factors of potential transpiration was tested to evaluate the water constraints on seasonal transpiration in tropical sub-humid climates, according pedoclimatic conditions. We selected a representative, mature stand in a drought-prone area. Tree transpiration, evaporative demand and soil water availability were measured every day over 15 months. The results showed that basic relationships with evaporative demand, leaf area index and soil water availability were globally supported. However the implementation of a regulation of transpiration at high evaporative demand whatever soil water availability was necessary to avoid large overestimates of transpiration. The details of regulation were confirmed by the analysis of canopy conductance response to vapour pressure deficit. The final objective of providing hierarchy between the main regulation factors of seasonal and annual transpiration was achieved. In the tested environmental conditions, the impact of atmospheric drought appeared larger importance than soil drought contrary to expectations. Our results support the interest in simple models to provide a first diagnosis of water constraints on transpiration with limited data, and to help decision making towards more sustainable rubber plantations.http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00753/fulldroughtCanopy phenologyRelative extractable soil waterpotential transpiration modelhigh evaporative demand |
| spellingShingle | Jessada eSopharat Frederic eGay Philippe eThaler Sayan eSdoodee Supat eIsarangkool Na Ayutthaya Charlchai eTanavud Claude eHammecker Frederic C. Do A simple framework to analyze water constraints on seasonal transpiration in rubber tree (Hevea brasiliensis) plantations Frontiers in Plant Science drought Canopy phenology Relative extractable soil water potential transpiration model high evaporative demand |
| title | A simple framework to analyze water constraints on seasonal transpiration in rubber tree (Hevea brasiliensis) plantations |
| title_full | A simple framework to analyze water constraints on seasonal transpiration in rubber tree (Hevea brasiliensis) plantations |
| title_fullStr | A simple framework to analyze water constraints on seasonal transpiration in rubber tree (Hevea brasiliensis) plantations |
| title_full_unstemmed | A simple framework to analyze water constraints on seasonal transpiration in rubber tree (Hevea brasiliensis) plantations |
| title_short | A simple framework to analyze water constraints on seasonal transpiration in rubber tree (Hevea brasiliensis) plantations |
| title_sort | simple framework to analyze water constraints on seasonal transpiration in rubber tree hevea brasiliensis plantations |
| topic | drought Canopy phenology Relative extractable soil water potential transpiration model high evaporative demand |
| url | http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00753/full |
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