Article

Effect of shelterwood cutting method on forest regeneration and stand structure in a Hyrcanian forest ecosystem

Journal of Forestry Research 01/2010; 21(3):265-272. DOI: 10.1007/s11676-010-0070-7

ABSTRACT A study was carried out to evaluate the effect of shelterwood cutting methods on stand structure and regeneration density.
Data were collected from a northern hardwood forest stands in Iran with Fagus orientalis Lipsky as dominant species, with/without shelterwood cutting operation. Results clearly demonstrate that the management of
Fagus orientalis Lipsky with shelterwood cutting system affected the frequency and diversity of the understory herbaceous species. The frequency
of Viola silvestris Lam., Asperula odorata L., Carex spp. and Rubus hyrcanus Juz increased significantly after shelterwood cutting. The DBH (diameter at breast height) of commercial species in control
stands (57.50±2.15 cm) was greater than that in treated stands (50.67±1.88 cm), whereas the total height of trees was similar
between treated and control plots (21±0.5 m). The number of Parrotia persica seedlings increased by 13.2% from 1995 to 2005 whereas the number of Fagus orientalis and Carpinus betulus seedlings significantly decreased from 1995 to 2005. In conclusion, it confirms that instead of shelterwood cutting method
other silvicultural practices such as selection cutting method should be applied for the mountainous beech stands of Hyrcanian
forests.

KeywordsShelterwood cutting-stand structure-regeneration-
Fagus orientalis Lipsky

0 Bookmarks
 · 
466 Views
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: This review provides an insight in European beech natural regeneration concerning initial stages of this species, growth and biomass allocation, and response to regeneration cutting methods. Natural regeneration of forest stands can assure reproduction of healthy, high-productive and steady forests. If all natural prerequisites for flowering and fructification are in good accordance, a rich mast year may occur over a large part of beech natural range. The critical period for seedling’s survival is the period from germination to rooting in the soil layer. The regeneration works with links between physiological and growth processes and mechanisms driving biomass allocation. Assimilates are allocated according to certain priorities. As for biomass production, the response of beech seedlings to light was positive in all aboveground components (leaves, branches, stem). Relative ratio of leaf biomass to the total aboveground biomass (LMR) and so also leaf area ratio (LAR) decreased with light supply. LAR is the main factor explaining variations in growth intensity. Advance growth of beech manifests good adaptation ability to light conditions from which it takes profits for its growth. The number of one-year-old seedlings was the highest in the densest stands with the highest numbers of fructifying trees; the number of older individuals, however, showed a different trend. The most abundant natural regeneration developed after medium shelterwood cut (stocking degree 0.5).
    Austrian Journal of Forest Science 01/2011; 128(2):71–92. · 0.23 Impact Factor

Full-text (2 Sources)

Download
96 Downloads
Available from
Jun 2, 2014