Ontogenetic changes of root and shoot respiration in trees

March 20, 2024Root ResearchOpen Access

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This research investigates how root and shoot respiration change during the growth stages of trees and their energy allocation.
Measured root and shoot respiration, biomass, and surface area in 377 Fagus crenata specimens from seedling to mature tree stages.
Analyzed the relationship between root and shoot respiration rates and individual biomass using a nonlinear model.
Root respiration was greatest during early growth, peaking at 47.8%, while root surface area reached a maximum increase of 78.2%.
Modeling showed different non-linear relationships for root and shoot respiration rates across growth stages.
Individual respiration rates in Fagus crenata aligned with a unified scaling trend observed in 51 species from Russia to Indonesia.

Examines energy allocation in tree growth, highlighting root respiration's role during development.

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Kurosawa et al. (2024) studied this question.

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