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Charakteristika přirozené obnovy v porostech ŠLP Masarykův les Křtiny na základě dat statistické provozní inventarizace
Kikal, Jan
This diploma thesis deals with the natural regeneration of tree species in forest in conversion to the selection forest. Data collection was carried out using the statistical operational inventory method on the property of the Training Forest Enterprise Masaryk Forest Křtiny. Data was collected in year 2013, and 80 plots were then selected for further processing. The number of individuals of natural regeneration was detected, the species of a tree, their height and damage were determined too. The aim of the thesis was to evaluate the state of natural regeneration and to recommend optimal values of the stand dendrometric characteristics with a view to maximizing the number of individuals of natural regeneration. The results show the dependence of some tree species on the forest stand type and height classes. The models for maximizing the number of individuals of natural regeneration are suitable, for example, in natural regeneration in the forest type complex 3S (fresh oak beech). The optimal values for maximizing the number of individuals of natural regeneration of beech are the number of trees per hectare up to 1 500 ind./hectare, stand basal area/hectare from 16 to 33 m2 and the stand volume/ha from 170 to 430 m3/hectare.
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Vliv zvěře na stav a vývoj dřevinné vegetace v regionu Týna nad Vltavou
Odehnal, Lukáš
The subject of this diploma was monitoring browsing damage to regeneration of woody plants in hunting area Bečice. Monitoring was made in spring and autumn 2015 on twelve rectangular transects according to the methodolgy of monitoring browsing damage on permanent transects (Čermák, Mrkva, 2003). During this investigation was controlled 3 622 individuals of eight woody plants species. From this species was the dominant sessile oak (Quercus petraea), followed by European beech (Fagus sylvatica) and Norway spruce (Picea abies). The most percentage representation of damage of regeneration (82 %) was fir (Abies alba). At least it was damage Scotss pine (Pinus sylvestris), only 15.24 %. Browsing demage in this region was mostly caused only by roe deer. Results were made in relation to the numbers game, and measures have been proposed hunting and forestry management to reduce negative impacts of ungulate browsing on nature regeneration.
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Analýza stavu a vývoje obnovy lesa na ŠLP Masarykův les Křtiny
Zouhar, Martin
The aim of the thesis was to analyze and subsequent analysis of forest regeneration for the period 2003 - 2012 at the Training Forest Enterprise Masaryk Forest Křtiny. The bases for the analysis were the data from forest management records. Based on the data obtained there was made a comparison between natural and artificial regeneration of forest, it was compared to the proportion of first and repeated reforestation. Thesis also analyzes the recovery in relation to stand conditions and trees.
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Analysis of close-to-nature silviculture in the Obora u Kaznějova municipal forests
Blažek, Vojtěch ; Remeš, Jiří (advisor) ; Podrázský, Vilém (referee)
Bachelor thesis describes close-to-nature silviculture at municipal property and its intention is to analyse main silviculture activities practiced here. At the common part there is briefly summarized the historical evolution of close-to-nature silviculture. It also mentions basic nature processes that occur at native forests. The thesis proposes several possible manuals of forest converting. It refers to farming in municipal forests too. In detailed part it analysis farming and nature conditions of the property and it focuses mainly at forest regeneration and stands tending. The results of analysis are being discussed. In conclusion the thesis recommends this type of silviculture mainly for prevention gene pool of forests species.
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Vliv velikosti a krytí holiny na odrůstání douglasky tisolisté
Ludvík, Ladislav
The aim of this thesis was to determine what influence the varying size of clearing and cover of the stand has on the gradual growth of Douglas fir (Pseudotsuga menziesii /Mirb./ Franco). The evaluation of different types of planting material (2 + 1, 2 + 2, 3 + 0 and f1 + k1) on partially covered locations is part of the thesis as well. Examination was conducted on research locations ÚZPL established in year 2010 (17 locations) and 2011 (4 locations) in the forests owned by the city of Brno. The survey was conducted after the end of the vegetation period in the months of September and November of the year 2013. It is a follow-up survey of the previous measurements realized in the fall of 2012. On all locations at least 100 individuals were measured and evaluated. These are the variables and signs assessed -- the overall size of the above ground part (in years 2012 and 2013), quantity of growth in each year, the thickness of the root neck, number of plants with multitude stems, the deviation of stem (straight, up to three times the diameter of the stem and more than three times diameter of the stem), the shape of the tree-top (triangle, ellipsoid, round and one-sided) the length of needles, the colour of the assimilatory part (green, bright green and yellow), loss percentage. These results were confronted with results from previous years. The results of this master thesis proved, that different size (and cover) of clearing and the used planting material have influence on the successful planting and growth of Douglas fir cultivation. The Douglas fir seems to be growing more successfully on locations protected at least from three sides where the width of clearing is no more than 35 metres. If quality planting material is used, low mortality of the plants can be expected as well. Aproximately after three years the quantity of growth and the thickness of the root neck on different locations start to match. On the locations protected from two sides and with the distance of the clearing from the stand not above the 1,5 multiple of the stand height, the covered-root plants (f1 + K1) and plant type 2+1 was proved to be most successful in growth and suffered from minimal loss even after three vegetation periods. The losses which occurred in 2013 were comparably lower to those in 2012.
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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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Analýza stavu a vývoje obnovy lesa na území Lesů města Brna, a.s.
Přikrylová, Hana
The aim of the study was to evaluate long-term state and development of forest regeneration in the area of forest management Deblín (Lesy města Brna, a.s.). Spruce (41,09 %) is the most represented evergreen tree (conifer). Forest management file 45 is that the most represented. 10 years' time period was selected for survey of the state of regeneration (forest management plan 2002 -- 2011). On the basis of the available forest management plan and forest management records the ratio of natural and artificial regeneration in every year was stated - for individual forest management files and whole forest management. Part of the work was also a field survey to assess the forest establishment. On forest management Deblín there were regenerated approximately 222 hectare (7 %) during the years 2002 -- 2011, from that amount 74% was artificial regeneration and 26 % was a share of natural regeneration. Restoring forest area on forest management file 451 is 23 % from which 91 % is artificial regeneration. Natural reproduction wasn't shown on forest management file 017 and forest management file 253. Natural reproduction (59 %) predominates on forest management file 456. On the average 6500 pieces/hectare were planted. Spruce represented only about 29 % and scotch pine about 9 % in artificial regeneration during the years 2002 -- 2011. On the other hand, the planting of oak (about 25 %) and larch (about 14 %) raised. Average costs for regeneration of 1 hectare of forest were 56 306 CZK in the year 2005, 40 347 CZK in the year 2006 and 45 909 CZK per hectare in the year 2007. From the all 20 analysed young forests four weren't evaluated as established after 7 years' time from planting. The limiting factor was the game or unsuitable species composition.
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