UDC

630*181.351

Authors

Nakvasina Elena Nikolaevna
Forestry Engineering Institute, Northern (Arctic) Federal University named after M.V. Lomonosov
Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russian Federation;
e-mail: nakvasina@yandex.ru, e.nakvasina@narfu.ru
Yudina Ol’ga Al’bertovna
Forestry Engineering Institute, Northern (Arctic) Federal University named after M.V. Lomonosov
Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russian Federation;
е-mail: olga23121972@yandex.ru, o.yudina@narfu.ru
Pokatilo Aleksandr Vital’evich
Federal Forestry Agency Roslesinforg, Arkhangelsk Branch
Nikitov str., 13, Arkhangelsk, 163062, Russian Federation;
e-mail: solomon_gtr@mail.ru

Abstract

The paper presents the use of the provenance trials to assess the response of spruce to the expected climate change. The studies are conducted in the climate test area in Arkhangelsk region (Plesetsk Forestry), which is a part of the state network of the provenance trials. We selected 3 spruce climate types, their shelterwoods were located further north than Plesetsk test object: Monchegorsk forestry (Murmansk region), Pinega and Kholmogory forestry (Arkhangelsk region). This allowed us to monitor the features of changes in their growth and reproductive characteristics in simulated warming of the 37-year-old provenance. The offspring growth in Plesetsk test point was compared with the growth of forest plantations of similar age (Arkhangelsk region) and natural stands (Murmansk region) at the place of the original plantations. The indicators of average annual growth in height and diameter were used to compare the plants of different ages. Spruce in the middle taiga subzone increased the growth in diameter and height, improved seeds quality (weight and seed germination) in simulated warming. The introgressive hybrids of Siberian spruce and fir spruce of Arkhangelsk region responded more actively to warming by their growth. The northernmost spruce reacted slower to the improvement of climatic factors. Spruce in Murmansk region did not reach the yield of spruce stands growing in Arkhangelsk region even upon the occurrence of the expected climate warming. However, we can expect a noticeable increase in seeds quality, and hence the natural regeneration under the canopy of plants.

Keywords

spruce, climate type, climate warming, provenance trial

References

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