D’Orangeville, Loïc, Houle, Daniel, Duchesne, Louis, Phillips, Richard P., Bergeron, Yves et Kneeshaw, Daniel
(2018).
Beneficial effects of climate warming on boreal tree growth may be transitory.
Nature Communications
, 9
(1).
doi:10.1038/s41467-018-05705-4
Repéré dans Depositum à
https://depositum.uqat.ca/id/eprint/1133
Résumé
Predicted increases in temperature and aridity across the boreal forest region have the potential to alter timber supply and carbon sequestration. Given the widely-observed variation in species sensitivity to climate, there is an urgent need to develop species-specific predictive models that can account for local conditions. Here, we matched the growth of 270,000 trees across a 761,100 km2 region with detailed site-level data to quantify the growth responses of the seven most common boreal tree species in Eastern Canada to changes in climate. Accounting for spatially-explicit species-specific responses, we find that while 2 °C of warming may increase overall forest productivity by 13 ± 3% (mean ± SE) in the absence of disturbance, additional warming could reverse this trend and lead to substantial declines exacerbated by reductions in water availability. Our results confirm the transitory nature of warming-induced growth benefits in the boreal forest and highlight the vulnerability of the ecosystem to excess warming and drying.
Type de document: |
Article
|
Informations complémentaires: |
Licence d'utilisation : CC-BY 4.0 |
Mots-clés libres: |
boreal forest; carbon sequestration; climate change; growth response; hydrocarbon seep; vulnerability; water availability |
Divisions: |
Forêts |
Date de dépôt: |
11 mai 2020 18:36 |
Dernière modification: |
11 mai 2020 18:36 |
URI: |
https://depositum.uqat.ca/id/eprint/1133 |
Actions (Identification requise)
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Dernière vérification avant le dépôt |