The Effect of Thinning on the Radial Increment of Scotch Pine

Complete text of the article:

Download article (pdf, 0.4MB )

UDС

630*238

DOI:

10.17238/issn0536-1036.2017.4.34

Abstract

Thinning is labor-consuming and costly. Therefore, a felling program linked with the terms, intensity, periodicity, which will allow intensifying forestry, should be formed. The theoretical basis of thinning for target and economic functions is to study the mechanisms of natural tree growth of different categories of development. The radial increment is the main indicator of the reaction of trees to the “social” position in the forest stand, climatic factors, economic activities. The goal research was the evaluation of the effect of thinning on the pine radial increment in the middle-aged forest stands. Thinning was carried out in 1993 according to the traditional crown thinning technology. Discount areas were established near the skid road and in the cutting center. The cores of model trees were selected at a height of 1.3 m perpendicular to the cut narrow strips (in the west-east direction). The productivity classes were determined by the relative diameter. The categories of tree growth were distinguished by the radial growth indices. After thinning, we did not observe significant change in radial growth, although some positive dynamics, especially in trees near the skidding trails, was noted. All investigated trees lowered the productivity class. 20 years after the cutting, a part of trees near the skidding trails moved to a higher productivity class, except for the 5th grade trees. The lack of response in trees belonging to different categories of growth was due to the fact that thinning was started relatively late, in the 50-year-old stands. The lack of thinning of the forest stand led to the presence of 12 % deadness and depression in radial growth. As a result, the improvement thinning became only a technical preparation for further sampling of trees.

Authors

O.N. Tyukavina, Candidate of Agricultural Sciences, Associate Professor A.S. Il'intsev, Postgraduate Student R.A. Ershov, Postgraduate Student

Affiliation

Northern (Arctic) Federal University named after M.V. Lomonosov, Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russian Federation; e-mail: olga-tukavina@yandex.ru

Keywords

thinning, myrtillus pine forest, radial increment, productivity class, category of growth.

For citation

For citation: Tyukavina O.N., Il'intsev A.S., Ershov R.A. The Effect of Thinning on the Radial Increment of Scotch Pine. Lesnoy zhurnal [Forestry journal], 2017, no. 4, pp. 34–44. 10.17238/issn0536-1036.2017.4.34

References

1. Berdanosov A.A. Povyshenie lesovodstvennoy effektivnosti lesovyrashchivaniya pod vliyaniem rubok ukhoda [Improvement of the Silvicultural Effectiveness of Forest Cultivation under the Influence of Thinning]. Ekonomika. Pravo. Menedzhment. Sbornik trudov molodykh issledovateley BGU [Economy. Law. Management. Collected Papers of Young Researchers of BSU], 2014, no. 1(1). Available at: http://izdatelstvo.isea.ru/epm/ archive.aspx?id=1. 2. Buzykin A.I., Pshenichnikova L.S. Reaktsiya srednevozrastnykh sosnyakov na rubki ukhoda [Response of Middle-Aged Pineries to Cleaning Cutting]. Lesnoy zhurnal, 2009, no. 1, pp. 28–33.
3. Bush K.K., Ievin' I.K. Ekologicheskie i tekhnologicheskie osnovy rubok ukhoda [Ecological and Technological Basis of Improvement Thinning]. Riga, 1984. 172 p.
4. Georgievskiy N.P. Rubki ukhoda za lesom [Improvement Thinning]. Moscow; Leningrad, 1957. 142 p.
5. Davydov A.V. Rubki ukhoda za lesom [Improvement Thinning]. Moscow, 1971. 184 p.
6. Danilov D.A., Ishchuk T.A. Otsenka konkurentnykh vzaimootnosheniy sosny i eli v smeshannykh drevostoyakh chernichnogo tipa lesa, proydennykh rubkami ukhoda i kompleksnym ukhodom za lesom [Competitive Relationships in the Pine-Spruce Stands Undergone Improvement Thinning and Complex Forest Care]. Sistemy. Metody. Tekhnologii [Systems. Methods. Technologies], 2013, no. 1(17), pp. 176–181.
7. Danchenko A.M., Bekh I.A. Perspektivy formirovaniya vysokoproduktivnykh i ustoychivykh lesov Zapadnoy Sibiri [Outlooks for the Formation of Highly Productive and Stable Forests in West Siberia]. Sibirskiy ekologicheskiy zhurnal [Contemporary Problems of Ecology], 2011, no. 6, pp. 835–841.
8. Kishenkov F.V. Taksatsionnaya struktura drevostoev: monogr. [Taxation Structure of Stands]. Moscow, 2007. 131 p.
9. Melekhov I.S. Lesovodstvo: ucheb. [Forestry]. Moscow, 1989. 302 p.
10. Mel'nikov E.S. Lesovodstvennye osnovy teorii i praktiki kompleksnogo ukhoda za lesom: avtoref. dis. … d-ra s.-kh. nauk [Forestry Principles of Theory and Practice of Complex Forest Management: Dr. Agric. Sci. Diss. Abs.]. Saint Petersburg, 1999. 35 p.
11. Mel'nikov E.S., Belyaeva N.V. Dinamika tekushchego prirosta v sosnovykh i elovykh drevostoyakh posle kompleksnogo ukhoda za lesom [Dynamics of Current Increment in Pine and Spruce Stands after Complex Tending of Forest]. Lesnoy zhurnal [Forestry journal], 2008, no. 1, pp. 56–64.
12. Onuchin A.A., Markova I.I., Pavlov I.N. Vliyanie rubok ukhoda na radial'nyy prirost stvolov i formirovanie sosnovykh molodnyakov [The Effect of Thinning on the Radial Increment of Stems and Formation of Pine Young Forests]. Khvoynye boreal'noy zony [Conifers of the Boreal Area], 2011, vol. XXIX, no. 3-4, pp. 257–265.
13. Onuchin A.A., Sokolov V.A., Vtyurina O.P. Perspektivy intensifikatsii lesnogo khozyaystva v Sibiri [Prospects of Intensification of Forestry in Siberia]. Lesnoe khozyaystvo, 2010, no. 6, pp. 11–12.
14. Pshenichnikova L.S. Otsenka rubok promezhutochnogo pol'zovaniya v sosnovykh drevostoyakh [Evaluation of Thinning in Pine Stands]. Khvoynye boreal'noy zony [Conifers of the Boreal Area], 2008, vol. XXV, no. 1-2, pp. 80–83.
15. Razin G.S., Rogozin M.V. O khode rosta drevostoev. Dogmatizm v lesnoy taksatsii [On the Progress in Forest Stand Growth and Dogmatism in Forest Valuation]. Lesnaya taksatsiya i lesoustroystvo [Forest Inventory and Forest Management], 2010, no. 1(43), pp. 41–70.
16. Sennov S.N. Rubki ukhoda za lesom [Improvement Thinning]. Moscow, 1977. 160 p.
17. Sennov S.N. Rezul'taty zapozdalykh rubok ukhoda [The Results of Delayed Thinning]. Lesnoe khozyaystvo, 2011, no. 3, p. 13.
18. Sukachev V.N. Izbrannye trudy. T. 1. Osnovy lesnoy tipologii i biogeotsenologii [Selectas. Vol. 1. Basics of Forest Typology and Biogeocenology]. Leningrad, 1972. 419 p.
19. Tyukavina O.N. Izmenenie struktury godichnykh kolets sosny pod vliyaniem osusheniya [Influence of Drainage on the Structure of Pine Annual Rings]. Lesnoy zhurnal, 2014, no. 1, pp. 72–80.
20. Feklistov P.A., Tyukavina O.N. Osobennosti assimilyatsionnogo apparata, vodnogo rezhima i rosta derev'ev sosny v osushennykh sosnyakakh: monogr. [Features of the Assimilation Apparatus, Water Regime and Growth of Pine Trees in Drained Pine Forests]. Arkhangelsk, 2014. 179 p.
21. Erteld W., Hengst E. Waldertragslehre. Leipzig, Germany, 1966. 332 p.
22. Gil W. Effect of Planting Density on Growth and Quality Parameters of Trees and Stands in Age Class II in Fresh Coniferous Forest Site. Folia Forestalia Polonica. Ser. A. Forestry, 2006, no. 48, pp. 89–105.
23. Huuskonen S., Hynynen J. Timing and Intensity of Precommercial Thinning and Their Effects on the First Commercial Thinning in Scots Pine Stands. Silva Fennica, 2006, vol. 40(4), pp. 645–662.
24. M`kinen H., Isom`ki A. Thinning Intensity and Growth of Scots Pine Stands in Finland. Forest Ecology and Management, 2004, no. 201, pp. 311–325.
25. Sloup M., Lehnerov L. Effect of Early Tending Measures on the Growth and Development of Young Pine Stand from Natural Regeneration. Zpravy Lesnickeho Vyzkumu, 2016, vol. 61, no. 3, pp. 213–222.
26. Varmola M., Salminen H. Timing and Intensity of Precommercial Thinning in Pinus sylvestris Stands. Scand. J. For. Res., 2004, no. 19(2), pp. 142–151.
Received on November 14, 2016