Přehled vypsaných témat - Ústav lesnické botaniky, dendrologie a geobiocenologie (LDF)Help


Základní údaje

Typ práce:
Disertační práce
Název tématu: Carbon and water relations in the coppice forests
Stav tématu: schváleno (prof. Dr. Ing. Petr Maděra - vedoucí pracoviště)
Vedoucí práce: doc. Ing. Josef Urban, Ph.D.
Fakulta:
Lesnická a dřevařská fakulta
Garantující pracoviště:
Ústav lesnické botaniky, dendrologie a geobiocenologie (LDF)
Max. počet studentů:
--
Navrhl: doc. Ing. Josef Urban, Ph.D.
Abstrakt: Coppicing is one of the traditional systems of forest management which was used in the Czech republic. Nowadays, it is most often used in the short rotation plantations of fast growing species but demands for biomass production, carbon forestry and nature protection may bring it back to other species than poplar, as it makes easier the re-estabilishment of a new forest and increases the wood production of young stands. To the tree, already established root system brings both advantages and disadvantages. Main advantages should be better access to water and nutrients. On the other hand, costs of respiration by a large root system may not be fully compensated by photosynthesis of relatively small leaf area which may bring a tree to the point of carbon starvation. Metabolism of new shoots, especially photosynthesis and stomatal conductance, should be affected not only by supposedly beter water availability but also negatively, by the age of a root system. Functional root system may also through hydraulic redistribution support other species of the forest floor during the periods of drought which are going to be even more common as the climate change progresses. Lower aerodynamical conductance of a coppice stand may bring down evapotranspiration and result in less severe depletion of soil water. Because the roots and stumps of cut trees are not going to decay and decompose we expect positive effect of coppicing on a soil carbon storage. We are going to use array of ecopysiological methods, from leaf to the tree level, to describe tree water status, parameters of photosynthesis and stand respiration of a coppice forest and to compare it to the same species in the high forest. Most of the work will take place on the coppice research plots within the Training Forest Enterprise of Mendel University. Findings will allow us to better undestand adaptation of these two types of forest management to the climate change.



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Omezení dle studia
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ProgramObor
D-BOTA Botanika
D-BOTA-FYTOLL Fytologie lesa