Vol. 36, issue 07, article # 10

Abstract:

Gases desorbed by the vacuum method from the tree rings of discs of deciduous trees are measured. The content of residual gases vacuum-desorbed from tree rings is analyzed with an opto-acoustic gas analyzer with a tunable CO₂ laser. The chronologies of residual CO₂ and (CO₂ + H₂O) of some deciduous trees growing near the city of Tomsk (West Siberia) have been derived. All the chronologies are cyclic with pronounced 2–4-year cycles. A correlation was found between the content of gases and summer temperatures and precipitation. We believe that the annual distribution of residual gases in the discs reflects the pattern of annual release of the gases from the stems of the deciduous trees into the atmosphere.

Keywords:

CO2, cyclicity, tree ring, deciduous tree

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