Growth trends of spruce in the Orlicke hory Mts.
Vejpustkova, M.(Vyzkumny Ustav Lesniho Hospodarstvi a Myslivosti, Jiloviste-Strnady (Czech Republic))E-mail:monika.vejpustkova@seznam.cz | Zahradnik, D.(Ceska Zemedelska Univ., Prague (Czech Republic). Lesnicka Fakulta) | Sramek, V.(Vyzkumny Ustav Lesniho Hospodarstvi a Myslivosti, Jiloviste-Strnady (Czech Republic)) | Fadrhonsova, V.(Vyzkumny Ustav Lesniho Hospodarstvi a Myslivosti, Jiloviste-Strnady (Czech Republic))
The aim of this study was to quantify the growth of spruce in stands of different age, and to reveal the relation between growth and climate as well as growth and level of nitrogen deposition. The research was carried out in the Orlicke hory Mts. (Czech Republic) in 2002. Stem analyses of ten sample trees (average age 163 years) confirmed a significant increase in height and diameter growth since the mid-eighties of the 20th century. Nearly 75% of radial increment variability could be explained by climatic factors. Growth in the last 10 years corresponded well to weather conditions. Analysis of the relationship between growth and nitrogen deposition showed negative correlations, but the results were not statistically significant. Comparison of the height growth curves of young stands (between 11 and 47 years) proved that the younger the stand, the steeper the growth curve. The values of the height growth of young stands significantly overreached the yield table values in all the age classes analyzed.
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