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Hodnocení ekologických limitů a zdravotního stavu buku lesního (Fagus sylvatica) v oblasti vnějších západních Karpat
Mikulenčák, Josef
European beech is an important and irreplaceable economic tree species in the forests of the Czech Republic. This thesis was created in thearea of Outer Western Carpathians, and it focuses on evaluation of ecological limits and the health condition of beech on network-based research plots from 2th vegetation tier (280 m) after 8th vegetation tier on the Lysá Mountain (1323 m). In each research area, basic dendrometry characteristics were measured and evaluated biotic and abiotic damage was evaluated. The results indicate that optimal growth conditions for beech are in the 4th vegetation tier. In other vegetation tiers, beech is more limited by abiotic factors than by biotic factors. In the 2th and 3th vegetation tier, the growth of beech is limited by frequent occurrence of drought. In contrast in higher vegetation tiers (6th, 7th, and 8th), frost, glaze and shorter growing period associated with lower average temperatures have the highest impact on the growth of beech. High vitality, wide ecological valence, a limited amount of biotic factors which damage beech and the ability to change the growth symptoms in individual vegetation tiers made beech into one of the main edificators of vegetation tires.
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Geobiocenologická diferenciace lesa a krajiny jako podklad lidské činnosti v krajině =: The geobiocoenological system of forests and landscape classification as a tool of human activity in landscape /
Friedl, Michal
The topic of the dissertation is a development of geobiocoenology and geobiocoenological system of classification and their possible application in landscape management. The thesis is structured into four thematic blocks or case studies and is composed of reviewed and published works. The first part introduces the application of biogeographical differentiation of the landscape by a geobiocoenological approach in the development of the concept of ancient coppice forests, estimation of their distribution in the Czech Republic and description of their state. The second study deals with the testing of empirically defined units of the Czech Forest Ecosystem Classification based on the evaluation of 11,885 geobiocoenological relevés stored in the Database of Czech Forest Ecosystem Classification and containing a series of accurately measured environmental data. The last two studies are operational applications of geobiocoenology. In the first one, geobiocoenology was used for the construction of a regional forest development plan in the Ukrainian Carpathians. In the second one was geobiocoenology used for the differentiation of the peak positions of Hrubý Jeseník, because of which, besides other things, was predicted the development of biotopes in case of removing allochthonous stands of mountain pine. This dissertation demonstrates the multifaceted use of geobiocoenology, contributes to its development and enriches it also at the level of operational applications.
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