Carbon and Water Cycling in Two Rubber Plantations and a Natural Forest in Mainland Southeast Asia
2022
Wang, Xueqian | Blanken, Peter | Kasemsap, Poonpipope | Petchprayoon, Pakorn | Thaler, Philippe | Nouvellon, Yann | Gay, Frédéric | Chidthaisong, Amnat | Sanwangsri, Montri | Chayawat, Chompunut | Chantuma, Pisamai | Sathornkich, Jate | Kaewthongrach, Rungnapa | Satakhun, Duangrat | Phattaralerphong, Jessada | University of Colorado [Boulder] | Kasetsart University [Bangkok, Thailand] (KU) | Geo-Informatics and Space Technology Development Agency (GISTDA) | Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) | Département Environnements et Sociétés (Cirad-ES) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | Agrosystèmes Biodiversifiés (UMR ABSys) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM) ; Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) | Département Performances des systèmes de production et de transformation tropicaux (Cirad-PERSYST) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | King Mongkut’s University of Technology Thonburi [Bangkok] | Chiang Mai University (CMU) | Rubber Authority Of Thailand (RAOT) | Kasetsart University | French Agricultural Research Center for International Development (CIRAD) | King Mongkut's University of Technology Thonburi and International Research Network under the Project “Land-air carbon, water and energy fluxes over different terrestrial ecosystems in the Asia Monsoon region and their response mechanisms to climate variability,” | Thailand Research Fund for providing flux data at the natural forest site | Hevea Research Platform in Partner-ship (http://hrpp.ac.ku.th).
International audience
اظهر المزيد [+] اقل [-]إنجليزي. Rubber plantations have rapidly replaced natural forests (NFs) in Mainland Southeast Asia, yet the relevant impacts on the terrestrial carbon cycle remain uncertain especially with an increase in drought frequency. Our study compared eddy-covariance measurements of carbon and water fluxes from two rubber monoculture plantations (at a northern marginal site and a southern traditional plantation site) with a second-growth NF between 2015 and 2018, and their responses to a prolonged drought during 2015/2016. The NF had higher light use efficiency, water use efficiency and gross primary productivity (GPP, 2.94 +/- 0.41 kg C m(-2) yr(-1)) than the northern rubber (NR) monoculture (2.45 +/- 0.17 kg C m(-2) yr(-1)), while lower ecosystem carbon use efficiency (eCUE) caused a lower net ecosystem productivity (NEP, 0.75 +/- 0.25 kg C m(-2) yr(-1)) compared to the plantation (1.19 +/- 0.22 kg C m(-2) yr(-1)). Drought decreased the NF eCUE by 23% with significant carbon uptake restrictions across multiple seasons, while the rubber GPP reduction was only substantial in the warm-dry season with an overall 17% decline in eCUE. The NR site's GPP was mainly controlled by soil water content throughout the year. Higher light availability offset the negative effect of drier conditions on the rubber GPP, resulting in larger carbon uptake compared to the southern plantation (GPP, 2.12 +/- 0.12 kg C m(-2) yr(-1); NEP, 1.07 +/- 0.14 kg C m(-2) yr(-1)). In contrast, the NF GPP was mainly restricted by vapor pressure deficit, especially during the drought.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Institut national de la recherche agronomique