Możliwości produkcyjne drzewostanu lipowego w rezerwacie "Las lipowy obrożyska"
Kamil Grałek , Andrzej Jaworski , Zbigniew Kołodziej , Kazimierz Majerczyk
AbstractNear the town of Muszyna, situated in the Beskid Sqdecki mountain range of the Carpathians, there is a unique little leaf linden (Tilia cordata Mill.) stand recognized as a relict of the Atlantic period. To protect this stand a nature reserve "Las Lipowy Obroyska", 17.8 ha in area, was established in 1919. At the present time the forest area of this reserve is 98.28 ha, including a strictly protected stand of natural character 26.68 ha in area. Most of the reserve's area is covered with the acid brown soil, while on ridges there is the leached brown soil and in the stream's valley the grey brown soil. The linden-hornbeam forest (Tilio-Carpinetum) is the main forest association of the reserve. This association is described as a sub-continental hornbeam forest of the Malopolska variety and submontane form. In the strictly protected part of the reserve (26.68 ha) two series of sample plots were established. The first one was set according to principles of the statistical-mathematical system of forest inventory and control. Measurements of dbh and height were carried out in 1995 and 2005 on 26 4-are circular sample plots including 20 plots in the stand representing the growing up stage, 5 in the stand representing the optimum stage, and 1 in the stand representing the break up stage. The plots were located within a network of squares 100 x 100 m. The second series of plots was formed by three permanent sample plots where measure~ ments were carried out in 1990 and 2000. They represented the following three different stages and phases of forest development: the growing up stage in transition to the optimum stage - Obroyska I (0.25 ha); the initial phase of the optimum stage - Obroyska II (0.5 ha); and the selection forest phase of the growing up stage - Obroyska III (0.5 ha). The aim of the study was to determine the productive potentiality (stand volume, basal area, and increments) of the natural little leaf linden strictly protected stand. The study was also going to answer the following questions: - Whether the little leaf linden stand is better in respect of the productive characteristics than common beech and mixed stands with silver fir, common beech, and Norway spruce of the lower montane zone? - Whether the little leaf linden, recognized in Polish forestry as an admixture tree species, may also be considered as the main highly productive species in stands of the submontane belt as well as in the lower part of the lower montane zone in the Beskid Sqdecki mountain range? The mean volume of the entire stand (determined on the basis of 26 circular sample plots) increased from 538 m3/ha to 568 m3/ha during the period between 1995 and 2005. In the growing up stage it increased from 554 m3/ha to 584 m3/ha, while in the optimum stage from 510 m3/ha to 541 m3/ha. The volume increment in these two stages was 66 m3/ha and 51 m3/ha/10years respectively (Tabs. 1, 2, 3, and 4). The measurements of basal area and its increment are summarized in Tables 1 and 5. In the permanent classical sample plots the volume of the stand representing the growing up stage in transition to the optimum stage (Obroyska I) increased from 700 m3/ha to 768 m3/ha during the 10-year period, while in the stand representing the initial phase of the optimum stage (Obroyska II) it increased from 797 m3/ha to 861 m3/ha, and in the stand representing the growing up stage (Obroyska III) from 696 m3/ha to 761 m3/ha. The volume increment was almost 80, 96, and 82 m3/ha/10 years respectively, while the basal area in 2000 was 60, 62, and 55 m2/ha respectively (Tab. 6). The stand volume per hectare in the investigated little leaf linden stand is one of the highest among natural broadleaf stands in the Western Carpathians. It is higher than that of common beech stands and mixed stands with silver fir, common beech and Norway spruce. The little leaf linden found in the Obroyska nature reserve exceptionally favorable growing conditions and formed a stand of a very high productive potentiality. A very high productive potentiality of the little leaf linden stand permits to consider this tree species as the main species in stands of the submontane zone as well as in the lower part of the lower montane zone in the Poprad river valley and in the climate close to that of the Muszyna surroundings.
|Other language title versions||The productive potentiality of the little leaf linden stand in the Obrożyska nature reserve|
|Journal series||Acta Agraria et Silvestria series Silvestris, ISSN 0065-0927, (B 1 pkt)|
|Publication size in sheets||1.15|
|Keywords in Polish||lipa drobnolistna, las naturalny, stadia i fazy rozwojowe, zasobno, pole powierzchni przekroju piernicowego, przyrost bieżący miąższości, przyrost pola powierzchni przekroju piernicowego|
|Keywords in English||Tilia cordata, natural forest, developmental stages and phases, stand volume, basal area, current volume increment, basal area increment|
|Citation count*||1 (2016-06-07)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.