Height growth and increment of the poplar clones in the region of the Gabcikovo water dam
1999
Smelko, S. | Scheer, L. (Technical Univ., Zvolen (Slovak Republic). Faculty of Forestry)
The heigh growth process of two breeding poplar clones Populus robusta and I-214 is analysed in the paper in comparison with assumed model course. This analysis for the period 1989-1995 was carried out in the mentioned area. The following question is investigated, if this growth process was influenced by the damming-up of the Danube river in 1992. Height and annual increment data of 114 samples trees on 9 permanent monitoring plots were a basis for this research. These data are so methodologically processed, that nature variability is considered, age growth trend, site index and age differences between the monitoring plots are also eliminated. Negative influence of dammed-up Danube river was not confirmed. On the contrary, results indicate that height growth is steeper and height increments are the same or higher as a model. The influence of groundwater level change was also not significant. All knowledge are with statistical tests on 5% probability level suported
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