Home – Home – Jornals – Contemporary Problems of Ecology 2010 number 2

It was established on the basis of the data of perennial observations that the annual growth of the layer of early tracheids of the trunk and the skeletal root of pine correlated with each other (r = 0,72-0,73). The size of annual rings of the organs under investigation were determined mainly by the width of the layer of early tracheids (r² = 83-92 %) and were dependent on their radial diameter by 50 % for trunk and by less than 20 % for the skeletal root. The width of the layer of early and late tracheids of the trunk and skeletal root was significantly correlating with warmth and water supply, while the radial diameter of early and later tracheids was determined mainly by the temperature conditions of the environment. The joint effect of temperature of air and soil, air humidity and precipitation on the structure of annual rings of trunk and skeletal root, excluding the width of the layer of late tracheids, was 34-58 %.