Sullivan M. J. P., Lewis S. L., Affum-Baffoe K., Droissart Vincent, Réjou-Méchain Maxime, Phillips O. L., et al. (2020). Long-term thermal sensitivity of Earth's tropical forests. Science, 368 (6493), p. 869-874. ISSN 0036-8075.
Titre du document
Long-term thermal sensitivity of Earth's tropical forests
Sullivan M. J. P., Lewis S. L., Affum-Baffoe K., Droissart Vincent, Réjou-Méchain Maxime, Phillips O. L., et al.
Source
Science, 2020,
368 (6493), p. 869-874 ISSN 0036-8075
The sensitivity of tropical forest carbon to climate is a key uncertainty in predicting global climate change. Although short-term drying and warming are known to affect forests, it is unknown if such effects translate into long-term responses. Here, we analyze 590 permanent plots measured across the tropics to derive the equilibrium climate controls on forest carbon. Maximum temperature is the most important predictor of aboveground biomass (-9.1 megagrams of carbon per hectare per degree Celsius), primarily by reducing woody productivity, and has a greater impact per degrees C in the hottest forests (>32.2 degrees C). Our results nevertheless reveal greater thermal resilience than observations of short-term variation imply. To realize the long-term climate adaptation potential of tropical forests requires both protecting them and stabilizing Earth's climate.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Sciences du milieu [021]
;
Etudes, transformation, conservation du milieu naturel [082]
