Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(6), 49-56 | DOI: 10.11118/actaun201260060049

Effect of stand edge on the natural regeneration of spruce, beech and Douglas-fir

Lumír Dobrovolný1, T. Štěrba, J. Kodeš
1 Ústav zakládání a pěstění lesů, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika

Our work aimed at studying the strategy of woody plants regeneration during the regeneration of a spruce stand with the admixture of beech and Douglas-fir by border cutting (NW-SE aspect) on acidic sites of higher elevations in the Bohemian-Moravian Upland. Spruce is better adapted to bear shade than Douglas-fir. Nevertheless, in optimal light conditions up to a distance of ca. 35 m (about 16% DIFFSF) from the stand edge, the Douglas-fir can put the spruce into danger as to height growth. By contrast to beech, the density of spruce is significantly higher within the distance of 45 m (about 15% DIFFSF) from the stand edge but further on the situation would change to the benefit of beech. The density of Douglas-fir significantly dominates over beech within a distance of 35 m from the stand edge; from 55 m (less than 15% DIFFSF), the situation changes in favour of beech. Beech can survive in full shade deep in the stand core waiting for its opportunity to come. As compared to spruce and Douglas-fir, the height growth of beech was at all times significantly greater at a distance of 25 m from the stand edge. Converted to practical conditions, spruce and Douglas-fir with individually admixed beech seedlings showed good prosperity approximately up to a distance of one stand height from the edge. A mixture of spruce and beech did well at a greater distance but good prosperity at a distance of 2-3 stand heights was shown only by beech. Thus, border regeneration eliminates disadvantages of the climatic extremes of clear-cutting and specifics of shelterwood felling during which one - usually shade-tolerant tree species dominates in the natural regeneration (e.g. beech).

Keywords: edge effect, natural regeneration, spruce, beech, Douglas-fir
Grants and funding:

Supported by the Czech Agency for Agricultural Research KUS QJ1230330 and by the Internal Agency of Mendel university IGA 13/2010.

Received: June 27, 2012; Prepublished online: July 19, 2013; Published: July 20, 2013  Show citation

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Dobrovolný, L., Štěrba, T., & Kodeš, J. (2012). Effect of stand edge on the natural regeneration of spruce, beech and Douglas-fir. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 60(6), 49-56. doi: 10.11118/actaun201260060049
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