Home – Home – Jornals – Contemporary Problems of Ecology 2005 number 1

For the purpose of search for new characteristics of annual rings, a mechod of measurement of CO₂emitted by a ring is proposed. The object of study were annual rings of Scots pine (Pinus silvestris L.) and Siberian spruce (Picea obovata Ldb). The carbon dioxide concentration was measured by a laser opticoacoustical gas an