Functional-structural modelling of tree and wood formation: new parameters and relations.
Foliage development and growth of Pinus radiata are modulated by temperature, water balance, and probably also by photoperiod, with marked tendency changes associated to solstices and equinoxes or at times close to them. Being a highly coordinated process, wood density of growing rings also vary, increasing or decreasing, according to current crown developmental trends. In addition, it appears that a constant thermal accumulation value triggers the formation of a new wood cell. A functional-structural model combines these phenomena and links new foliage development and expansion to wood formation and density.
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