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Průběh kalamity a stav obnovy na revíru Polana, LS Jablunkov
Dyrčík, Vojtěch
This bachelor´s thesis deals with the calamity and subsequent restoration on the clearings of the district Polana LS Jablunkov, Lesy České republiky s.p. According to the forest management records, the course of the calamity and renewal in the years 2009–2020 was determined. The beginning of the calamity can be considered the year 2016, when the volume of harvested wood increased by twice the volume of the previous year and was still increasing. As the area of the clearings increased, the extent of renewal also increased. The most frequently used tree species for artificial regeneration was a beech (Fagus sylvatica L.). The beech was also the most widely used in natural rejuvenation. The state of natural regeneration was determined on three selected clearings. Selected clearings are located in the 4th, 5th and 6th forest vegetation stage. The following parameters were determined and evaluated on the network of inventory areas: height, type of plants, abundance and game nibble damage. The results show that the clearing in the 6th forest vegetation stage has a lower frequency of natural regeneration. The most represented tree species in natural regeneration was Norway spruce (Picea abies (L.) Karst.).
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Odrůstaní výsadeb jedle bělokoré (Abies alba Mill.) pod mladými březovými porosty na severní Moravě
Dolenský, Šimon
The aim of this thesis is to rate the growth of firs in various vegetation situations, while using a preparatory birch one. Two research areas representing two different locations in northern Moravia were chosen, with options as follows: TVP Březiny (LT 3H5) embankment cuts in birch forests, clearcut, with intervention, without intervention; TVP Hlubočec (LT 4S3) - with intervention, embankment cuts in birch forests. Firs were planted in autumn 2015. The height of their above-ground part, the growth of new branches, root neck thickness, tree crown area and vitality were measured in 2018 and 2019. The best growth was shown in the firs using the option of embankment cuts in birch forests. On the other side, the worst growth was shown in the firs using the option of a control non-intervention variant. Both negative and positive aspects of each variant were assessed in this thesis.
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Bříza bělokorá jako přípravná dřevina při zalesňování kalamitních holin jedlí bělokorou: vliv na podmínky prostředí a vybrané ekofyziologické parametry jedle
Štefková, Veronika
This thesis compare various uses of silver birch (Betula pendula Roth.) as a preparatory species during afforestation by silver fir (Abies alba Mill.). In this experiment, silver fir was planted at fall of 2015 and measurements were conducted in the vegetation season 2016. There were four variants of experiment with respect to the silver birch: clearcut, birch stand with 50 % stocking density, narrow embankment cut and birch stand with a full stocking density. Air temperature, precipitation, vapor pressure deficit, soil moisture and transmittance of photosynthetically active radiation were measured from the environmental variables. On plants, the growth increment, chlorophyll fluorescence, shoot water potential and needle mas per area were studied. Preparatory forest stand eliminated extreme temperatures, both positive and negative. Maximum temperatures were by 7 °C lower under the forest canopy than on clearcut. Spring frost was eliminated by 2.2 °C which was enough to protect fresh shoots from freezing. On the other hand soil moisture under the birch was by 23 till 47 % lower than at the clearcut. Tallest growth increment of 12 cm was at the clearcut, shortest of 7 cm under the birch without thinning. Needle mass per area corresponded to light availability and it was highest at clearcut and lowest under the birch. Chlorophyll fluorescence in dark did not suggest any differences between treatments (Fv/Fm was higher than 0.80) and therefore differences in growth can be accounted to the light availability. Data suggest that for the silver fir saplings is best to grow under severely thinned silver birch canopy with low stocking density which allows for enough light and soil moisture but still protects saplings against inclement weatherFormula clause:I declare that I am working, "Birch as a preparatory tree species in reforestation calamity clearings silver fir: the impact of environmental conditions and selected ecophysiological parameters fir" worked independently and all used sources and information mention in the list of references. I agree that my work has been published in accordance with § 47 b of the Act no. 111/1998 Coll., On universities, as amended and in accordance with directives on the publication of university theses. I am aware that my work covered by Act no. 121/2000 Coll., The Copyright Act, and the Mendel University in Brno has the right to conclude a license agreement and use this work as school work pursuant to Section 60 paragraph. 1 of the Copyright Act. I also agree that, before drawing up licensing agreements on the use of a work by another person (the subject), I request a written opinion by the university that the subject license agreement is not contrary to the legitimate interests of the university and undertake to pay any contribution to the costs associated with the creation of the work, and up to the full amount
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Vyhodnocení úspěšnosti obnovy lesa na kalamitních holinách LS LČR Jablunkov
Baselides, Andrzej
This work deals with artificial regeneration of the forest on the calamity clearing areas LCR LS Jablunkov. The main objective of this bachelor thesis was to evaluate the growth development of 5-8 years aged plantations of Norway spruce, silver fir, European Beech, pedunculated oak, small-leaved lime tree and black alder, after planting at water-affected sites. The other objective was to compare the results with growth at nutrient sites. The following parameters were evaluated: Losses, length of the shoot, last increment, diameter of the root collar, length of the needles, size of the assimilation apparatus of leaves, color of the needles, damaging, warp of the stem, vertical deflection of the stem, deployment height of forked trees, stem form and shape of the crown. Evaluation of trees´ root system was also part of this work. Results showed, that black alder and Norway spruce grow the best at the water-affected sites. Planting of small-leaved lime tree and pedunculated oak didn´t approve, on the contrary. Another problem was the fact, that there were serious deformations of the root system at all tree species. The last issue were the high losses due to the poor quality of the planting stock, improper way of planting, and large number of the occurring game. The comparison between water-affected and nutrient sites shows, that the trees grow better and reach better parametres and smaller losses at the nutrient sites.
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Odrůstání kultur na kalamitních holinách horských poloh
Albrechtová, Petra
The work deals with the issue of regenerating clearings due to salvage felling at mountain altitudes. Development was monitored on research plots Sokol in the Hrubý Jeseník Mts. (15 plots) and Jizerka in the Jizerské Mts. (15 plots). The aim was to assess the developing young plantations of Norway spruce, European beech, European larch and Carpathian pubescent birch in particular, as well as of sycamore maple, European mountain ash and Silesian willow aged 9 -- 14 years after planting. The assessment was focused primarily on the mensurational variables of the tree species (height, root collar diameter, crown diameter, and their increments). Part of the work was to evaluate the condition of soil environment, nutrition, root system architecture and health of Norway spruce. The best growth was shown by European larch. By contrast, the use of sycamore maple, European mountain ash and Silesian willow did not prove well. The mixing of Norway spruce and European beech was demonstrated to have a significantly favourable influence on the growth of the two species. The root system was confined to humus horizons only and all individuals exhibited deformation into a tangle. Analyses of soil conditions revealed that the effect of liming had persisted even after 20 years and the nutritional condition of the trees pointed to the luxurious supply namely of calcium and magnesium.
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Potenciál využití sukcese při obnově kalamitní holiny
Květoň, Lukáš
The subject of this thesis was to analyse the success of forest regeneration on calamity clearcut incurred after wind calamity "Anthony". After decline of approximately 1,7 hectares of beech forest on rich stand, there was founded a permanent research area of size 15x110 m in 2012. On spot grid (5x5 m) was observed spontaneous development of woody and herbaceous vegetation. The outcome of the study was to evaluate the density of natural regeneration of two growing seasons. Under current legislation (Act 289/1995 Coll., Decree 139/2004 Coll.) can be regeneration evaluated as unsuccessful, mainly because of the low number of targeted tree species 7 779 pcs/ha, which do not reach limit of the minimum number of individuals per hectare. The density of other tree species amounted to only 476 pcs/ha. The following year, a decrease of targeted tree species density reached 7 619 pcs/ha and increase of other species density reached 952 pcs/ha. In the first year was recorded the highest density of beech (3 175 pcs/ha) and oak (2 222 pcs/ha), in the upcoming year these species showed the greatest decline. Very significant influence on the density of natural regeneration was distance from the edge of the surrounding forest, where up to 5 m from the edge of the stand density of natural regeneration reached 70 000 pcs/ha, over 45 m from the edge of the stand natural regeneration density did not reach more than 10 000 pcs/ha
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