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Black locust (Robinia pseudoacacia L.) Short-Rotation Crops under Marginal Site Conditions

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Author(s): RÉDEI, Károly | CSIHA, Imre | KESERŰ, Zsolt

Journal: Acta Silvatica & Lignaria Hungarica
ISSN 1786-691X

Volume: 7;
Start page: 125;
Date: 2011;
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Keywords: Robinia pseudoacacia L. | short-rotation crops | oven-dry stem dendromass

ABSTRACT
The improvement of the reliability of renewable resources and the decline in reserves offossile raw material in the coming decades will lead to increasing demands for wood material andconsequently to a greater role of short rotation forestry (SRF). Particular efforts have been made inEurope to substitute fossils with renewables, in this context the proportion of renewable energy shouldbe increased to 20% by 2020. SRF can be provide relatively high dendromass (biomass) incrementrates if the short rotation tree plantations are grown under favourable site conditions and for anoptimum rotation length. However, in many countries only so-called marginal sites are available forsetting up tree plantations for energy purpose. For SRF under marginal site conditions black locust(Robinia pseudoacacia L.) can be considered as one of the most promising tree species thanks to itsfavourable growing characteristics. According to a case study presented in the paper black locust canproduce a Mean Annual Increment (MAI) of 2.9 to 9.7 oven-dry tons ha–1 yr–1 at ages between 3 and7 years using a stocking density of 6667 stems ha–1. On the base of the presented results and accordingto international literature the expected dendromass volume shows great variation, depending upon site,species, their cultivars, initial spacing and length of rotation cycle.
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