%0 Journal Article
%T Analysing the effects of local environment on the source-sink balance of Cecropia sciadophylla: A methodological approach based on model inversion
%A Letort, V.
%A Heuret, P.
%A Zalamea, P.-C.
%A De Reffye, P.
%A Nicolini, E.
%J Annals of Forest Science
%D 2012
%V 69
%N 2
%@ 12864560 (Issn)
%F Letort_etal2012
%O Cited By (since 1996): 1; Export Date: 20 June 2012; Source: Scopus; Coden: Afosf; doi: 10.1007/s13595-011-0131-x; Language of Original Document: English; Correspondence Address: Letort, V.; Department of Applied Mathematics and Systems (MAS), Ecole Centrale Paris, Grande voie des Vignes, Chatenay-Malabry 92295, France; email: veronique.letort@centraliens.net
%O exported from refbase (http://php.ecofog.gf/refbase/show.php?record=405), last updated on Wed, 20 Jun 2012 12:06:30 -0300
%X Context Functional-structural models (FSM) of tree growth have great potential in forestry, but their development, calibration and validation are hampered by the difficulty of collecting experimental data at organ scale for adult trees. Due to their simple architecture and morphological properties, "model plants" such as Cecropia sciadophylla are of great interest to validate new models and methodologies, since exhaustive descriptions of their plant structure and mass partitioning can be gathered. Aims Our objective was to develop a model-based approach to analysing the influence of environmental conditions on the dynamics of trophic competition within C. sciadophylla trees. Methods We defined an integrated environmental factor that includes meteorological medium-frequency variations and a relative index representing the local site conditions for each plant. This index is estimated based on model inversion of the GreenLab FSM using data from 11 trees for model calibration and 7 trees for model evaluation. Results The resulting model explained the dynamics of biomass allocation to different organs during the plant growth, according to the environmental pressure they experienced. Perspectives By linking the integrated environmental factor to a competition index, an extension of the model to the population level could be considered. © INRA and Springer Science+Business Media B.V. 2011.
%K Cecropia
%K Functional-structural model
%K Model inversion
%K Morphology
%K Trophic competition
%U http://www.scopus.com/inward/record.url?eid=2-s2.0-84862021032&partnerID=40&md5=62b6d1b3bebd4200d99a15e8e074847b
%P 167-180