Changes of the mixed mountain virgin forest after 70 years on a permanent plot in the Ukrainian Carpathians 567
2009
Veska, J. | Šebesta, J. | Kolář, T.
During 2004–2006, another permanent research plot (No. 12) on Pop Ivan Marmarosh Mt. in the Zakarpattya province of Ukraine was renewed, i.e. re-measured and re-analyzed. The plot was originally established in the 30’s of the 20<sup>th</sup> century. The tree layer is dominated by European beech (<I>Fagus sylvatica</I> L.), with Silver fir (<I>Abies alba</I> Mill.) and Norway spruce (<I>Picea abies</I> [L.] Karst.) as often associated species, and with sycamore maple (<I>Acer pseudoplatanus</I> L.) growing occasionally in small groups. After 70 years, the tree species composition partly changed. Total live timber volume increased from 529.6 to 636.3 m<sup>3</sup>/ha. Considerable growth was recorded in beech, while the live timber volume of fir, spruce and sycamore maple did not almost change. Total number of trees (> 3 cm in dbh) increased from 737 trees/ha to 760 trees/ha. Number of beech trees increased markedly. On the contrary, fir and spruce showed a significant decrease in tree number. Interesting results emerged from the renewal of the permanent square plot (20 × 20 m), proving that beech is able to persist in the shade for more than 70 years with only minimal increment of both height and diameter.
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