Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(6), 287-292 | DOI: 10.11118/actaun201260060287

Effect of early to late wood proportion on Norway spruce biomass

Radek Pokorný1, Petra Rajsnerová2, Jiří Kubásek2, Irena Marková3, Ivana Tomášková4
1 Ústav zakládání a pěstění lesů, Mendelova univerzita v Brně, Zemědělská 3, 613 00 Brno, Česká republika
2 Sekce ekosystémových analýz, Centrum výzkumu globální změny AV ČR, v. v. i., Bělidla 4a, 603 00 Brno, Česká republika
3 Ústav ekologie lesa, Mendelova univerzita v Brně, Zemědělská 3, 613 00 Brno, Česká republika
4 Katedra dendrologie a šlechtění lesních dřevin, Česká zemědělská univerzita v Praze, Kamýcká 129, 165 21 Praha 6 - Suchdol, Česká republika

Aboveground biomass, allometric relationships and early to late wood proportions were investigated in two even-aged monocultures of Norway spruce (Picea abies [L.] Karst) located at mountain and highland localities of the Czech Republic. However similar stand age and tree size, mountain trees comparing to them from highland showed less/tapering stems, lower aboveground biomass and lower stem wood density along the whole stem vertical profile as a result of different early to late wood proportion. These proportions were 79 % and 54 % for early wood, and 21 % and 46 % for late wood within mean stem annual circle in mountain and highland locality, respectively. These different proportions seem to reflected site specific growing conditions, particularly highly sufficient water availability during spring time in mountain region- support early wood growth, whereas elevated air temperature during summer time in highland region stimulate late wood growth.

Keywords: allometric relationship, climate, tree ring analysis, wood density
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This publication is an output of the CzechGlobe Centre that is being developed within the OP RDI and co-financed from EU funds and the State Budget of the Czech Republic (Project: CzechGlobe, Reg. No. CZ.1.05/1.1.00/02.0073). The authors are grateful for the financial support also by grants No. CZ.1.07/2.4.00/31.0056 and COST 0C09006 of the Ministry of Education, Youth and Sports of the Czech Republic, No. TA02010945 of the Technology Agency of the Czech Republic and No. QH81160 of the National Agency for Agriculture Research.

Received: June 1, 2012; Prepublished online: July 19, 2013; Published: July 20, 2013  Show citation

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Pokorný, R., Rajsnerová, P., Kubásek, J., Marková, I., & Tomášková, I. (2012). Effect of early to late wood proportion on Norway spruce biomass. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 60(6), 287-292. doi: 10.11118/actaun201260060287
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