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Open AccessArticle

Mortality of Different Populus Genotypes in Recently Established Mixed Short Rotation Coppice with Robinia pseudoacacia L.

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Silviculture and Forest Ecology of the Temperate Zones, University of Göttingen, Büsgenweg 1, 37077 Göttingen, Germany
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Centre of Biodiversity and Sustainable Land Use (CBL), University of Göttingen, Büsgenweg 1, 37077 Göttingen, Germany
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Forest Genetics and Forest Tree Breeding, University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
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Forest Botany and Tree Physiology, University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
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Author to whom correspondence should be addressed.
Forests 2019, 10(5), 410; https://doi.org/10.3390/f10050410
Received: 24 April 2019 / Revised: 8 May 2019 / Accepted: 10 May 2019 / Published: 12 May 2019
(This article belongs to the Special Issue Modelling Mixing Effects in Forest Stands)
Short rotation coppices play an increasing role in providing wooden biomass for energy. Mixing fast-growing tree species in short rotation coppices may result in complementary effects and increased yield. The aim of this study was to analyze the effect on mortality of eight different poplar genotypes (Populus sp.) in mixed short rotation coppices with three different provenances of the N-fixing tree species black locust (Robinia pseudoacacia L.). Pure and mixed stands were established at two sites of contrasting fertility. Survival of poplar was assessed for each tree two times a year, for a period of three years. In the first two years, high variation in mortality was observed between the genotypes, but no significant differences between pure and mixed stands were identified. However, three years after planting, higher mortality rates were observed in the mixtures across all poplar genotypes in comparison to pure stands. The expected advantage on growth of combining an N-fixing tree with an N-demanding tree species, such as poplar, was overshadowed by the Robinia’s dominance and competitiveness. View Full-Text
Keywords: short rotation coppice; poplar; black locust; survival rate; mortality; mixing effect short rotation coppice; poplar; black locust; survival rate; mortality; mixing effect
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Rebola-Lichtenberg, J.; Schall, P.; Annighöfer, P.; Ammer, C.; Leinemann, L.; Polle, A.; Euring, D. Mortality of Different Populus Genotypes in Recently Established Mixed Short Rotation Coppice with Robinia pseudoacacia L.. Forests 2019, 10, 410.

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