The relationship between productivity and tree-ring growth in boreal coniferous forests


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Gea-Izquierdo, Guillermo, Bergeron, Yves, Huang, Jianguo, Lapointe-Garant, Marie-Pierre, Grace, John et Berninger, Frank (2014). The relationship between productivity and tree-ring growth in boreal coniferous forests. Boreal Environment Research , 19 (5-6). pp. 363-378. Repéré dans Depositum à

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Ecosystem productivity estimated with a model calibrated with eddy-covariance data was related to tree-ring growth of two different boreal conifers along a latitudinal gradient. The relationship between ecosystem productivity and growth changed with species and site. Greater photosynthesis in spring and summer increased annual anomalies of radial growth in both species, and the response of growth to productivity was earlier in warmer southern stands particularly for pine. Radial growth of jack pine increased in the long-term with higher productivity, whereas this relationship was more reduced in black spruce. This could express species-specific differences in carbon allocation strategies but likely it is a consequence of the limiting marginal soils where spruce is found in the south. Only treerings of jack pine at some sites showed certain potential as direct proxies for ecosystem productivity at the low and high-frequency responses.

Type de document: Article
Mots-clés libres: ecosystem productivity; ecosystem growth; tree rings; growth rings; boreal forest; wood formation
Divisions: Forêts
Date de dépôt: 12 mai 2020 16:24
Dernière modification: 12 mai 2020 16:24

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