![]() Почтовый адрес: САФУ, Редакция «Лесной журнал», наб. Северной Двины, д. 17, г. Архангельск, Россия, 163002, ауд. 1425
Тел.: +7 (8182) 21-61-18 о журнале |
А.А. Бахтин, Н.Н. Соколов Рубрика: Лесное хозяйство Скачать статью (pdf, 0.7MB )УДК630*2+630*5DOI:10.17238/issn0536-1036.2015.4.76АннотацияКоренные сосняки на Европейском Севере России в настоящее время сохранились
Сведения об авторах
Ключевые словасосняки, заболоченность, структура, возраст, диаметр, высота, изменчивость, классификацияЛитература
Ссылка на английскую версию:Types of Age Structure of Waterlogged Pine Forests in the Arkhangelsk RegionUDC 630*2+630*5 Types of Age Structure of Waterlogged Pine Forests in the Arkhangelsk Region A.A. Bakhtin, Candidate of Agriculture, Associate Professor N.N. Sokolov, Candidate of Agriculture, Associate Professor Northern (Arctic) Federal University named after M.V. Lomonosov, Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russia; e-mail: bakhtin@narfu.ru
Native pine forests in the European North in the present time have been preserved in extremely humid soils of region of the total state wood fund and occupy 12.4 million hectares, or 49.5% of the total area of the state forest fund, the forest area with excessive moistening is 7.5 million hectares. For pine is characteristic that they are waterlogged average in the region by 33.5 %. The analysis of the age structure and forest structure waterlogged pine forests is necessary because of the wide representation of them in the state forest fund of the European North and the lack of recommendations on the organization of management in them. Wetlands plantings represented 80% mature and overmature stands. Therefore, first of all it is necessary to examine the forest structure for the wetland pines in this age group. To study the age structure of mature and over marshy pines were cut entirely from 100 to 200 trees on 12 sample plots. By each tree were made measurements of age, height, diameter at a height, marked kinds of defects, their distribution on the trunk, the length of the live crown, the presence of boughs of different thicknesses, cleanability of stem from boughs and etc. Such detailed characteristic of trees allowed to study the structure of age, diameter, height, shape and volume of the trunk, as well as marketability. In a basis of type classification of age structure of the wetland pine we have put variability of age, diameter and height of trees, and the nature of the distribution of trees on these grounds. Studying wetland pine forests have a coefficient of variation of age from 5.8% to 43.2 %, volatility of diameter from 25.8% to 48%, and the variation of the height from 9.3% to 29.1%. Analysis of the obtained results have allowed to draw a conclusion that waterlogged pine forests conventionally were represented even-aged and uneven-aged stands with expressed generations and without such a clear expression. For options factors was adopted the type of age structure: conditionally-even-aged and uneven-aged stands. Effective sign is the coefficient of variation of trees diameter. Analysis of variance showed that the influence of this factor (the type of age structure) reliably at all levels of significance. Influence of the type of age structure on variability of trees diameters in the stand can be from 58.5% to 86.2% of the total impact of all amounts factors. Therefore, the necessity and feasibility of classification of waterlogged pine stands on conditionally even-aged and uneven-aged is confirmed by dispersion analysis. The analysis of age structure of waterlogged pine forests have not revealed the presence of these relatively uneven-aged stands. Thus, the possibility of the formation of waterlogged forests of this age structure is probably very small.
Keywords: Pine stands, bogginess, structure, age, diameter, height, variability, regularity, dispersion. REFERENCES 1. Verkhunov P.M. Zakonomernosti stroeniya raznovozrastnykh sosnyakov [Regularities of Structure of Uneven-Aged Pine Stands]. Novosibirsk, 1976. 255 p. 2. Vilikaynen M.I., Zyabchenko S.S., Ivanchikov A A. Sosnovye lesa Karelii i povyshenie ikh produktivnosti [Pine Stands of Karelia and Increasing of Their Productivity]. Petrozavodsk, 1974. 256 p. 3. Gusev I.I. Produktivnost' el'nikov Severa [The Productivity of Spruce Forests of the North]. Leningrad, 1978. 232 p. 4. Komin G.E. K voprosu o tipakh vozrastnoy struktury nasazhdeniy [To the Question About the Types of Stands Age Structure]. Lesnoy zhurnal, 1963, no. 3, pp. 37–42. 5. Komin G.E. Nekotorye osobennosti stroeniya raznovozrastnykh drevostoev zabolochennykh sosnyakov [Some Features of the Structure of Uneven-Aged Stands of Waterlogged Pine Forests]. Raznovozrastnye lesa Sibiri, Dal'nego Vostoka i Urala i vedenie khozyaystva v nikh [Uneven-Aged Stands of Siberia, The Far East and Ural and Their Management]. Krasnoyarsk, 1967, pp. 19–26. 6. Levin V.I. Sosnyaki Evropeyskogo Severa: stroenie, rost i taksatsiya drevostoev [Pine Stands of European North: the Structure, Growth and Valuation of Forest Stands]. Moscow, 1966. 158 p. 7. Lesa SSSR [Forests of USSR]. Lesa severnoy i sredney taygi Evropeyskoy chasti SSSR [Forests of North and Middle Taiga on the European Part of USSR]. Moscow, 1966, vol. 1. 458 p. 8. Melekhov I.S. Rubki i vozobnovlenie lesa na Severe [Forest Cutting and Reforestation in the North]. Arkhangelsk, 1960. 201 p. 9. Semechkin I.V. Printsipy vydeleniya i taksatsii raznovozrastnykh drevostoev [The principles of Selection and Evaluation of Uneven-Aged Stands]. Raznovozrastnye lesa Sibiri, Dal'nego Vostoka i Urala i vedenie khozyaystva v nikh [Uneven-Aged Stands of Siberia, the Far East and Ural and Their Management]. Krasnoyarsk, 1967, pp. 5–13. 10. Shanin S.S., Falaleev E.N. Zakonomernosti vozrastnogo stroeniya khvoynykh lesov Sibiri [Regularities of the Age Structure of the Coniferous Forests of Siberia]. Lesnoe khozyaystvo, 1960, no. 10, pp. 20–21. 11. Shanin S.S. Stroenie sosnovykh i listvennichnykh drevostoev Sibiri [The structure of Pine and Larch Stands of Siberia]. Moscow, 1965. 106 p.
Received on April 30, 2014 |
Электронная подача статей
ИНДЕКСИРУЕТСЯ В:
|
![]() |
|
![]() |
![]() |
![]() |
|
![]() |
|
![]() |
|
![]() |
|
![]() |
![]() |
![]() |
|
![]() |
![]() |
![]() |
|
![]() |
![]() |
![]() |
|
![]() |
![]() |
![]() |
|
![]() |
|
![]() |
![]() |
![]() |
![](/img/transparent.gif)