Acta Univ. Agric. Silvic. Mendelianae Brun. 2009, 57, 25-36
Published online 2014-10-14

Estimation of the yield of poplars in plantations of fast-growing species within current results

Martin Fajman1, Milan Palát2, Pavel Sedlák1

1Ústav techniky a automobilové dopravy, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika
2Ústav obecné a hospodářské demografie, Mendelova zemědělská a lesnická univerzita v Brně, 613 00 Brno, Česká republika

Current results are presented of allometric yield estimates of the poplar short rotation coppice. According to a literature review it is obvious that yield estimates, based on measurable quantities of a growing stand, depend not only on the selected tree specie or its clone, but also on the site location. The Jap-105 poplar clone (P. nigra x P. maximowiczii) allometric relations were analyzed by regression methods aimed at the creation of the yield estimation methodology at a testing site in Domanínek. Altogether, the twelve polynomial dependences of particular measured quantities approved the high empirical data conformity with the tested regression model (correlation index from 0.9033 to 0.9967). Within the forward stepwise regression, factors were selected, which explain best examined estimates of the total biomass DM; i.e. d.b.h. and stem height. Furthermore, the KESTEMONT’s (1971) mo­del was verified with a satisfying conformity as well. Approving presented yield estimation methods, the presented models will be checked in a large-scale field trial.


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