Vol. 30, issue 11, article # 6

Abstract:

In continuation of works on the determination of cyclic tree stem CO₂ efflux, vacuum-extracted gas samples of large woody roots of Siberian stone pine and Scots pine are studied. Spectral and cross- spectral analyses reveal the cyclic character of variations in the chronologies. This behavior of total pressure and CO₂ in large roots testifies to possible cyclic diffusion of CO₂ from large roots into soil and then into the atmosphere, which can be considered as a new feature of autotroph respiration. An attempt is made to revise previously obtained results in some related works on the basis of cyclic large root CO₂ efflux.

Keywords:

CO2, total pressure, woody roots, cyclicity

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