[Particular features of Pseudotsuga menziesii (Mirb.) Franco growth at introduction in Belarus]
2007
Kholopuk, G.A. | Torchik, V.I.,National Academy of Sciences, Minsk (Belarus). Central Botanical Garden
Research results of detailed survey of stand development and productivity of unevened stands of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) introduced in the Republic of Belarus and possibilities of their application in the national forestry were presented. Analysis of Pseudotsuga menziessi (Mirb.) Franco development of tree trunk diameter, height, area of cut and volume in the conditions of Belarus was proposed. The maximum growth of tree trunk according to the diameter was stated at the age of 20 years, according to the area of cut – 35-40 years, according to the volume – 55-65 years (0,084 m3), according to tree hight – 30-35 years (57 cm). Analysis of average width of annual rings of model trees showed that their maximum value was achieved at the age of 15-25 years (4,4-4,5 mm). Further graceful degradation of annual rings width was noted. In 70-year-old trees annual rings width was 1,9 mm. Preservation of high rates of tree growth made it possible to recommend Pseudotsuga menziesii for the creation of highly productive plantations of trees in Belarus. The model of connection of tree height with its diameter and age on 1,3 m height was described by the linear equation. The observed model can be used for the calculation the average measures of tree heights for forest assessment realization
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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تم تزويد هذا السجل من قبل National Academy of Sciences of Belarus