Research report on deformation of annual rings is given in the thesis. Aim of the work - to perform an analysis of deformation of annual rings during obsolescence of tree. Tasks of the work - to perform a comparative analysis using borings made in 2004 and 1985 – 1986. To evaluate statistical reliability of deformation of annual rings. Object of the work - trees of Scotch pine (Pinus sylvestris L.). Methods of the work – methods of verification of statistical hypotheses and analysis of variance were used for data processing. Content of the work – verification of hypothesis that annual rings of pine is shrinking during the obsolescence of trees. Results: - difference of annual rings width is statistically reliable at two point of the interval investigated: nearby bark and in the central part of the stem, at the margin where sapwood is converting to heartwood. The shrinking reaches 0.2 mm within 5 annual rings. The biggest influence on shrinking of annual rings has distance of annual rings from the bark and age of tree.
| Identifer | oai:union.ndltd.org:LABT_ETD/oai:elaba.lt:LT-eLABa-0001:E.02~2005~D_20050606_132204-39140 |
| Date | 06 June 2005 |
| Creators | Mostauskis, Henrikas |
| Contributors | Mažeika, Juozas, Kliučius, Almantas, Riepšas, Edvardas, Deltuvas, Romualdas, Juodvalkis, Antanas, Jermalavičius, J., Petrauskas, Edmundas, Bartkevičius, Edmundas, Vasiliauskas, Antanas, Lithuanian University of Agriculture |
| Publisher | Lithuanian Academic Libraries Network (LABT), Lithuanian University of Agriculture |
| Source Sets | Lithuanian ETD submission system |
| Language | Lithuanian |
| Detected Language | English |
| Type | Master thesis |
| Format | application/pdf |
| Source | http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050606_132204-39140 |
| Rights | Unrestricted |
Page generated in 0.0021 seconds