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National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Biomass estimation of European beech stands
 Veselský, Marek
Forest ecosystems plays an important role in the global carbon cycle of carbon sinks of terrestrial ecosystem. Carbon sequestered or stored in forest trees is mostly referred to as the biomass of tree, site or forest. This diploma thesis deals with biomass estimation of European beech stands at the Holíkov (the Drahanská vrchovina Highlands) and Štítná nad Vláří (the Bílé Karpaty Mts.) study sites in the Czech Republic. Study was conducted in the period of 2010 to 2015. 65 allometric equations were tested for the purpose of determining the most suitable candidate for the estimation of aboveground and belowground biomass of stands and of all the major tree compartments. It is obvious from the results that the allometric equations performed very differently from each other. It was also found, based on the obtained results, that the most suitable allometric equations for the study sites are by Vejpustková et al. 2013 and Wutzler et al. 2008.
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Hodnocení růstu a struktury biomasy Pinus radiata v subtropických a tropických oblastech
 Václavíková, Dana
Pinus radiata is a very suitable plantation tree species in subtropics and tropics. This work summerizes allometric equations for predicting biomass of Pinus radiata for tree components, whole tree and forest stand. Furthermore this work includes the evatluation of growth and also compare the structure of radiata pine´s biomass in different countries of subtropics and tropics. The rate of growth is significantly influenced by abiotic factors.
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Stanovení dřevní biomasy stínících dřevin kávových plantáží v oblasti Villa Rica, Peru
 Šeptunová, Zuzana
Allometric models for dominant shade tree species were developed for coffee agroforestry systems in Villa Rica, Peru. The studied shade tree species were Eucalyptus saligna, Pinus tecunumanii, Pinus radiata and Prumnopitys harmsiana. The models predict total aboveground biomass volume of tree trunk and biomass volume of the commercial utilizable tree trunk based on diameter at breast height, which was identified as the best predictor, R2 > 0,98. By non-destructive method of using Field-Map technology was measured 258 individuals. From these data have been calculated volumes of 4 types of cut outs destined for the local standards for determining the commercial utilizable tree trunk. Thus prepared data was interleaved with tested models. The best-fit model was logarithmic transformation of power-law. This model was used to determine total volume and two types of cut outs for all studied species. In all cases was reached high R2 between 0.98 and 0.99. For the other two types of cut outs data the best-fit model was Gompertz.
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