Agritrop
Accueil

Climate seasonality limits leaf carbon assimilation and wood carbon storage in tropical forests

Blanc Lilian, Nicolini Eric-André, Sabbadin Didier, Morel Hélène, Nicolle Sandra, Descroix Laurent, Beauchêne Jacques. 2016. Climate seasonality limits leaf carbon assimilation and wood carbon storage in tropical forests. In : Tropical ecology and society reconciliating conservation and sustainable use of biodiversity. Program and abstracts. Plinio Sist (ed.), Stéphanie Carrière (ed.), Pia Parolin (ed.), Pierre-Michel Forget (ed.). ATBC. Storrs : ATBC, Résumé, p. 227. Annual Meeting of the Association for Tropical Biology and Conservation (ATBC 2016), Montpellier, France, 19 Juin 2016/23 Juin 2016.

Communication avec actes
[img]
Prévisualisation
Version publiée - Anglais
Utilisation soumise à autorisation de l'auteur ou du Cirad.
Page 227 de ATBC 2016-13.pdf

Télécharger (2MB) | Prévisualisation

Résumé : The seasonal climate drivers of the carbon cycle in tropical forests remain poorly known, although these forests account for more carbon assimilation and storage than any other terrestrial ecosystem. Based on a unique combination of seasonal pan-tropical data sets from 89 experimental sites (68 include aboveground wood productivity measurements and 35 litter productivity measurements), their associate canopy photosynthetic capacity (enhanced vegetation index, EVI) and climate, we ask how carbon assimilation and aboveground allocation are related to climate seasonality in tropical forests and how they interact in the seasonal carbon cycle. We found that canopy photosynthetic capacity seasonality responds positively to precipitation when rainfall is < 2000 mm per year (water-limited forests) and to radiation otherwise (light-limited forests); on the other hand, independent of climate limitations, wood productivity and litterfall are driven by seasonal variation in precipitation and evapotranspiration respectively. Consequently, lightlimited forests present an asynchronism between canopy photosynthetic capacity and wood productivity. Precipitation first-order control indicates an overall decrease in tropical forest productivity in a drier climate. (Texte intégral)

Classification Agris : F62 - Physiologie végétale - Croissance et développement
F61 - Physiologie végétale - Nutrition
K01 - Foresterie - Considérations générales
P40 - Météorologie et climatologie
P01 - Conservation de la nature et ressources foncières

Auteurs et affiliations

  • Blanc Lilian, CIRAD-ES-UPR BSef (FRA)
  • Nicolini Eric-André, CIRAD-BIOS-UMR AMAP (GUF)
  • Sabbadin Didier
  • Morel Hélène, CIRAD-ES-UMR Ecofog (GUF)
  • Nicolle Sandra, AgroParisTech (FRA)
  • Descroix Laurent, ONF (GUF)
  • Beauchêne Jacques, CIRAD-ES-UMR Ecofog (GUF) ORCID: 0000-0003-4578-3670

Autres liens de la publication

Source : Cirad-Agritrop (https://agritrop.cirad.fr/581200/)

Voir la notice (accès réservé à la Dist) Voir la notice (accès réservé à la Dist)

[ Page générée et mise en cache le 2021-06-10 ]