Vol. 15, issue 09, article # 4

Ageev B.G., Nesvetailo V.D., Ponomarev Yu.N., Sapozhnikova V.A. Measurements of CO2 emission by tree rings. // Atmospheric and oceanic optics. 2002. V. 15. No. 09. P. 692-693.
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A method is proposed for measuring CO2 emission by tree rings. The method is aimed at finding new characteristics of tree rings. Rings of a Scots pine (Pinus sylvestris L.) and Siberian spruce (Picea obovata Ldb.) were taken as an object of investigation. The CO2 concentration was measured with a laser photoacoustic gas analyzer. Positive correlation was found between the emission of CO2 and the ring width.