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Energy production of poplar clones and their energy use efficiency

Gabriela Jamnická (1)   , Viera Petrášová (2), Rudolf Petráš (3), Julian Mecko (3), Július Oszlányi (4)

iForest - Biogeosciences and Forestry, Volume 7, Issue 3, Pages 150-155 (2014)
doi: https://doi.org/10.3832/ifor0978-007
Published: Jan 23, 2014 - Copyright © 2014 SISEF

Research Articles


The poplar clones of Robusta and I-214 (Populus × euramericana) are characterized by fast growth and high quality biomass production. The calorific values for these poplar clones were determined, and modelling of calorific production of the entire poplar clone stands was performed. This research, dependent on age and site indexes, was conducted in four localities in Eastern Slovakia and seven in the western region of this country. Samples of bark, wood and small-wood with bark were excised from three tree stem areas and from two parts of the crown. No significant difference was observed between the two clones, with regard to either the biomass fraction or the location of the excised sample on the tree. The average calorific capacity of all biomass fractions was approximately 6.86-8.73 GJ m-3, with the lowest bark values emanating from the stem base. The mean annual calorific energy production for site indexes 40-20 after 17-26 years growth was 320-80 GJ ha-1 a-1, and this was calculable 2-3 years earlier in the I-214 clone than in Robusta. The energy use efficiency of these poplar clones was estimated at a maximum of 0.4-1.6% solar radiation utilization.

  Keywords


Biomass, Calorific Value, Energy Use Efficiency, Poplar Clones, Populus × euramericana

Authors’ address

(1)
Gabriela Jamnická
Slovak Academy of Sciences-Institute of Forest Ecology, Štúrova 2, SK-96053 Zvolen (Slovakia)
(2)
Viera Petrášová
Slovak University of Agriculture in Nitra, A.Hlinku 2, SK-94976 Nitra (Slovakia)
(3)
Rudolf Petráš
Julian Mecko
National Forest Centre,Forest Research Institute, T.G.Masaryka 22, Zvolen (Slovakia)
(4)
Július Oszlányi
Slovak Academy of Sciences, Institute of Landscape Ecology, Štefánikova 3, SK-81499 Bratislava (Slovakia)

Corresponding author

 
Gabriela Jamnická
jamnicka@sav.savzv.sk

Citation

Jamnická G, Petrášová V, Petráš R, Mecko J, Oszlányi J (2014). Energy production of poplar clones and their energy use efficiency. iForest 7: 150-155. - doi: 10.3832/ifor0978-007

Academic Editor

Francesco Ripullone

Paper history

Received: Feb 21, 2013
Accepted: Nov 21, 2013

First online: Jan 23, 2014
Publication Date: Jun 02, 2014
Publication Time: 2.10 months

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