Farmers mapping the land use changes in Madagascar

Photo: Jorge Llopis
Centre for Development and Environment (CDE)
Publication article

Patterns of total root and shoot carbon dioxide fluxes and their impact on daily tree carbon budget in large tropical tree saplings

A significant amount of the carbon (C) assimilated in photosynthesis by trees is re-emitted to the atmosphere via the respiratory CO2 flux of roots. Because of technical constraints, we have little understanding of the extent and dynamics of the respiratory CO2 flux of roots at the total root system scale (RCF). This study aimed to fill this gap and to quantify the daily C budget of entire trees. Aeroponics was used as a novel approach to measure directly and simultaneously RCF and the net CO2 flux of the entire shoot (SCF).

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