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Monitoring zdravotního stavu douglasky tisolisté Pseudotsuga menziesii na ŠLP ML Křtiny
Slezáková, Hana
This bachelor thesis deals with the monitoring of the health condition of Pseudotsuga menziesii at the university scientific area Masarykův les Křtiny. The research was made on the basis of 55 forest stands and during the vegetation period. The damage of the vegetation was documented by camera. The information, extent of the damage and evaluation of forest stands were recorded. All the materials were determined and the analysis was made with the microscope. Swiss Needle cast has mostly occurred by the vegetation from 1 to 40 year. At the later age was Swiss Needle Cast not recorded or could not been determined due to the high treetop. Overall was 35% healthy, 18% affected by Swiss Needle Cast, 11% by resinosis, 10% was damaged by game, 9% was affected by defoliation and 7% by Douglas fir Adelge.
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Srovnání růstové odezvy na změny klimatických faktorů v letokruhových řadách smrku ztepilého (Picea abiesL./ Karst.) a douglasky tisolisté (Pseudotsuga menziesiiMirb./ Franco)
Kalouš, Pavel
This bachelor thesis deals with the study of the influence of climatic parameters on radial growth of Douglas fir and Norway spruce. I worked at two localities of the School Forest Enterprise Masaryk´s Forest Křtiny with similar natural conditions and a total of 160 samples were collected. At first, the samples were ground and measured in the laboratory. Subsequently, the dating of individual ring series was performed. Thereafter, the age trend was removed, and site chronologies were created. The resulting indexed site chronologies were correlated with average monthly temperatures and monthly precipitation sums. I hypothesised that radial growth of spruce will be more influenced by monthly precipitation than the growth of Douglas fir. This hypothesis was confirmed, because statistically significant effect of precipitation on radial growth of Norway spruce was proven at seven months (VI, VII, IX, XII of the previous year and I, VI, VII in the year of ring formation), whereas for Douglas fir only at two months (I, VII). The effect of average monthly temperatures was less significant for both studied species in comparison with monthly precipitation totals - statistical significance for Douglas fir was proven in three months (IX, XI of the previous year and III in the year of ring formation) and for Norway spruce in two months (VIII of the previous year and VII in the year of ring formation).
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Zhodnocení ujímavosti a vitality prostokořenného a krytokořenného sadebního materiálu
Hrabal, Jan
This thesis evaluates ability to root and vitality of bare rooted and containerized planting stock of European beech (Fagus sylvatica L.), Douglas fir (Pseudotsuga menziesii Mirb.) and Norwegian spruce (Picea abies L.). The aim of thesis was to find out which king of planting stock is better for interest species. The measurement took place on 4 areas near Zelená Hora village, on a foot of Drahanská vrchovina. These parameters were mea-sured: tree height, height increase in 2015, crown width, crown shape, stem deflection, length of needles, length and width of leaf, root neck thickness and vitality. The result of thesis is evaluation of individual parametres and comparison of bare rooted and con-tainerized planting stock.
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Vliv stanoviště a velikosti holiny na odrůstání kultur douglasky tisolisté
Karlíček, Josef
This thesis aims to determine an impact of size (coverage) of regeneration element, type of the planting stock used, trophic state of the site and time of planting on growing out of the Douglas fir plantation. In total, three plantations (two in spring and one in autumn) were carried out at six different sites. For each plantation, about 100 bare-root plants and about 100 containered plants were planted at each site. In autumn of 2013 (after ending the plant increments), length of the part above ground, the last increment of the apical part and branch, thickness of the root collar were measured for all plants planted (about 3,600 plants in total); further, number of live branches on the stem, length of branches with needles, shape of the stem, occurrence of branch increment this year, colour of needles and length of needles were determined. In addition to this, damage to plants and the overall health condition of the plants were evaluated. Subsequently, statistic evaluation was carried out according to individual sites. The results showed if the plants are not damaged significantly (in particular by frost and pine weevil), then, regarding the trophic state, the nutrient sites are more preferable for Douglas fir cultivation. Regarding the size of clearing area or regeneration element coverage, underplantings and small sheltered clearing areas are very suitable for establishment of Douglas fir plantation. For spring planting, bare-root planting stock is best to use; for autumn planting, the containered planting stock shows to be better to use. Furthermore, it was found time of planting has no significant impact on the plantation growing out for spring planting; on the contrary, the autumn planting can be assessed positively. Douglas fir was also confirmed to suffer late spring frost frequently on the large open clearing area, resulting in decreased increment in a given year and negative influence on the overall health condition of the plants. In addition, damage to plants caused by pine weevil cannot be neglected.
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Požadavky na dříví douglasky při použití ve stavbách
Loskot, Vilém
Douglas fir is a tree of foreign origin, and is being introduced to czech forests. The goal of this bachelor thesis was to perform analysis of douglas wood for the use in wood buildings. This work contains analysis of wood products, which are used in wood buildings. Analysis of wood products is divided into 6 classes of wood quality. In the document is also described douglas fir and its properties. Wood of douglas fir is in Northern America considered to be one of the most versatile wood. Material is especially suitable for construction purposes of wood based buildings, making of windows, doors, outside terraces and boats.
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Growing Douglas-Fir in the area SLP CZU in Kostelec nad Cernymi lesy
Kubeček, Jiří ; Podrázský, Vilém (advisor) ; Marušák, Róbert (referee)
Douglas-fir (Pseudotsuga menziesii /Mirb./ Franco) is currently considered one of the most important introduced tree species in Europe; for example in Germany it is considered domesticated. By its production it surpasses significantly our domestic softwood and its importance is found both in amelioration and improving functions as well as in its ability to compensate for spruce, so far our most common species however retreating somewhere.
The work addresses the growth processes of individuals and stands of Douglas- fir and its selected environmental effects in regions of Kostelec nad Černými lesy, and Písek. The aim is to demonstrate the production potential, economic evaluation, describe the growth dynamics and the impact on soil quality in the stands. The methods applied will include dendrometric measurement, description of growth dynamics, profitability, sampling and analysis of humus and mineral soil horizons. Basic pedochemical characteristics will be analyzed: soil reaction, soil sorption complex, nutrient content in total and exchangeable forms. The results indicated a high produce ability of Douglas fir comparable to the one of Grand fir and exceeding the one of Norway spruce. In terms of stabilization and effects on soil also has better properties than spruce. In terms of amelioration resemble the qualities of deciduous trees.
The work follows on previous experimental investigation..The output provides quantification of the production and soilforming potential, yield assessment and recommendations for application in conditions of the University Forest Enterprise and the Czech Republic.
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Srovnání stavby a vybraných vlastností dřeva douglasky tisolisté z různých stanovišť
Timko, Lukáš
The aim of this thesis was to analyse the macroscopic structure of the wood of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) and determine selected physical and mechanical properties with an emphasis on the comparison of juvenile and mature wood zones. Additionally, the structure and selected properties of the wood from sites varying in the forest types (3K, 3B, 3A) were compared. Five sample trees were sampled in each of the three selected sites. Their rootstock parts were then worked into test specimens with dimensions of 20 x 20 x 30 mm a 20 x 20 x 300 mm. The selected wood properties were the density at moisture content of 0% and 12%, basic density, the total shrinkage in all three basic directions, the total volumetric shrinkage, strength in compression parallel to the grain, bending strength, and the modulus of elasticity in bending. Additionally, a tree-ring analysis was conducted. It was found out that the juvenile wood has wider rings, a lower proportion of earlywood and all the observed properties showed lower values. The properties determined and the structure of the wood from the selected groups of forest types is statistically significantly different in most cases. From the forestry perspective, the resulting material characteristics of wood of Douglas fir are greatly dependent on the site; however, the precise location of the sample within the stem (centre or periphery) has a more pronounced effect on the properties.
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Plodnost douglasky ve vztahu k věku porostu
Krejsová, Anna
The bachelor thesis deals with problems of fertility Douglas fir in the Training forest enterprise "Masaryk Forest" Křtiny as the basic premise of natural regeneration. The main objective of the work is to analyze the intensities of fertility and the occurrence of natural regeneration in Training forest enterprise Křtiny. From factors the stand age and the method of mixed Douglas fir were evaluated. The results show that with increasing age the intensity of fertility increases. The beginning of fertility is between 11 and 20 years. Trees breeds best in the stands grown as a monoculture. In places where are suitable conditions for habitat, there occurs the natural regeneration regardless of age. Of the 247 analyzed stands with natural regeneration occurred it in 88, which is almost 36 %. In young stands and at full canopy of trees in older stands is not found natural regeneration is found.
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Vliv stanoviště na růst douglasky tisolisté
Karlíček, Josef
The aim of the study was to determine the effectsof the growth the cultures after the first growing season size (coverage). Especially in terms of:a regeneration element, a type of planting stock, fertility habitat and a time of planting. In total, the three plantations were carried out (two spring and one autumn) at six different sites and the only first two were evaluated in this study. 100 seedlings cover-rootedand approximately 100 seedlings bare-rooted were planted at each planting date. In autumn (after the increment of seedlings) there were measured:a length of the herbage, an annual increment and terminal branches, a thickness of aneck root, anumber of live branches on a trunk, branches with needles length, astrain shape, an occurrence of aannual increment branches, a needles color and alength of needles; at a total of about 2,400 individuals. There was also rated adamage of seedlings and an overall health of the planted plants. Subsequently, the statistical analysis was performed according to the particular sites. The results show that the increment of seedlings most affects frost damages, so it is unsuitable for planting large and uncovered clearings. On the contrary, the best results were obtained in underplantings and small clearings. The evaluation also shows that better results are achieved withbare-rootedplanting material. The favorable sitesfor Douglas firfrom the perspective of fertility arethe breeding sites. After comparing early and late spring planting, we can conclude that the time has not significant impact on the growth of the seedlings.
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