Productivity Dynamics of Different Origin Pine

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Abstract

The natural and artificial origin blueberry pine forest, growing in the northern subzone taiga of the European North of Russia were studied. The results of age-related changes in primary productivity in aboveground parts of the tree layer of these plantations are obtained. It was found that productivity increases with age in absolute terms. The greatest share of productivity in the studied age range (II and III age classes) of stands has a tree green (acerous shoots with a diameter at the base of no more than 8 mm) and ranges from 52 to 59% of the total capability of natural forest and forest cultures - 68 - 76%. The second largest share of participation in the production of trees is trunk wood. In the studied age-related range it increases in absolute values and thus decreases in relative units: for natural pine forests from 42% to 33%, for sowing of pine - 21% to 18%. In pine cultures is stronger developed assimilatory device (branches, needles) than in natural pine forests, i.e. it is continued to expand physiologically active part phytocenosis. In natural stands is more intense the accumulation of wood.

Authors

• P.A. Feklistov, Doctor of Agriculture, Professor
• D.N. Klevtsov, Candidate of Agriculture, Associate Professor
• F.A. Kunnikov, Postgraduate Student
• E.P. Habarova, Postgraduate Student
• I.B. Amosova, Candidate of Agriculture, Associate Professor
  
  Northern (Arctic) Federal University named after M.V. Lomonosov,
  Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russia;
  e-mail: pfeklistov@yandex.ru, feklistov@narfu.ru

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References

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