Beneficial effects of climate warming on boreal tree growth may be transitory.
Nat Commun
; 9(1): 3213, 2018 08 10.
Article
en En
| MEDLINE
| ID: mdl-30097584
ABSTRACT
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.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Árboles
/
Cambio Climático
Tipo de estudio:
Prognostic_studies
País/Región como asunto:
America do norte
Idioma:
En
Año:
2018
Tipo del documento:
Article