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Analysis of production potential of forest stands on former agricultural land in Doupovske hory Mts. (VLS ČR, s.e., Division Karlovy Vary)
Sedláček, Jiří ; Bílek, Lukáš (advisor) ; Otakar, Otakar (referee)
This diploma thesis evaluates the structure and development of forest stands on former agricultural land in the conditions of Doupovské hory, VLS ČR, s.p. The main objective of this research was to compare production and growth characteristics of following tree species: Picea abies (L.) KARST., Larix decidua MILL., Acer pseudoplatanus L., Alnus glutinosa (L.) Gaertn. and Populus nigra L. Stand structural characteristics were measured on 5 circular plots (500 m2) for each tree species. Beside basis dendrometric characteristics, health status of individual trees was evaluated and increment cores were taken for the description of growth dynamics (n > 10 for each tree species). Software Statistica 12 was used for the comparison of production parameters. Comparing all types of damage, the difference between alder (0.084) and maple (0.091) was not statistically significant, while larch (0.356) and poplar (0.513) both were significantly different from the first two mentioned tree species. The highest damage was confirmed in the case of spruce (0,736), which differed from all other species. On the other hand, spruce had the highest standing volume (416.8 m3.ha-1, 29.7 SD), followed by poplar (350.0 m3.ha-1, 91.7 SD). The lowest standing volume was stated in the case of maple (182.9 m3.ha-1, 73.3 SD), followed by larch (238.3 m3.ha-1, 57.7 SD). For all tree species we saw during the observation period decrease of diameter increment. The steepest decline is obvious for larch and alder, on the contrary relatively stable growth pattern was stated for maple and to a certain extent also poplar. Based on the research results, management guidelines for the selection of appropriate trees species and regeneration of studied stands are proposed.
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