J. For. Sci., 2012, 58(9):400-409 | DOI: 10.17221/94/2011-JFS

Root system development in Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) on fertile sites

O. Mauer, E. Palátová
Department of Forest Establishment and Silviculture, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic

The paper analyses the root system development in the artificially established stands of Douglas fir aged 10, 20, 30, 60 and 80 years on aerated soils (Cambisols) without skeleton. On these sites, the Douglas fir develops a uniform root system of substitute taproots and anchors, which has great predispositions to assure the good mechanical stability of trees as well as its resistance to sudden changes in upper soil horizons. Several anchors growing in positive geotropic direction shoot from the stem base, several slant anchors shooting from the side of the stem base turn into the positive geotropic direction of growth. In humus horizons, horizontal skeletal roots shoot from the stem base, which turn into lower soil horizons in an "elbow-pipe" manner and from which shoot positively geotropically growing anchors. Trees of Douglas fir develop this type of root system already at an age of twenty years.

Keywords: Douglas fir; root system; fertile sites

Published: September 30, 2012  Show citation

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Mauer O, Palátová E. Root system development in Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) on fertile sites. J. For. Sci. 2012;58(9):400-409. doi: 10.17221/94/2011-JFS.
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