Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Universidad Nacional Autónoma de México
2016
|
| Sujets: | |
| Accès en ligne: | https://www.redalyc.org/articulo.oa?id=56546743003 https://www.redalyc.org/journal/565/56546743003/ https://www.redalyc.org/journal/565/56546743003/html/ https://www.redalyc.org/journal/565/56546743003/56546743003.epub https://www.redalyc.org/journal/565/56546743003/movil |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
Table des matières:
- Sensitivity of pines in Mexico to temperature varies with age MARÍN POMPA-GARCÍA MARTÍN A. HADAD Biología tree ring Age classes climate change Sierra Madre Occidental Mexico has an abundance of Pinus species with P. cooperi as a dominant tree species of great ecological importance. In this study, we compared the climate sensitivity of P. cooperi trees of two age classes growing in the Sierra Madre Occidental: younger (< 80 years) and older (≥ 80 years) trees. A regional curve standardization (RCS) of growth ring width was developed for these two age classes. Our statistical analysis showed that annual tree growth was similar between the two age classes in absolute values of tree-ring widths. However, we found that the effects of rising temperatures during the previous winter are age-dependent; that is, maximum and minimum temperatures have opposite effects on the subsequent tree growth. Warming winter maximum temperatures have negative effects on radial growth, which are stronger in younger trees, whilst minimum winter temperatures enhance the growth. However, no difference in radial growth was observed between the two age classes based on precipitation. In climate change scenarios, an increase in temperature would affect younger trees of P. cooperi more than older trees. These effects of increased temperature may lead to a decrease in the growth and subsequent death of the trees. These results could help land managers to develop criteria related to forest management regarding P. cooperi. 2016 artículo científico 0187-6236 https://www.redalyc.org/articulo.oa?id=56546743003 https://www.redalyc.org/journal/565/56546743003/ https://www.redalyc.org/journal/565/56546743003/html/ https://www.redalyc.org/journal/565/56546743003/56546743003.epub https://www.redalyc.org/journal/565/56546743003/movil en http://www.redalyc.org/revista.oa?id=565 Atmósfera application/pdf Universidad Nacional Autónoma de México Atmósfera (México) Num.3 Vol.29