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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Zhodnocení stavu veřejné zeleně ve vybrané části obce Fryčovice

Zátopková, Lucie January 2015 (has links)
This thesis deals with the evaluation of the state of public parks in territorial memorials to the victims of the 2nd World War, in the rear. The work is theoretical and applied character. The theoretical part of the basic concepts of public space and it's typology, urban greenery, it's function, dividing urban green according to the functions, stress factors greenery in urban environment, revitalization, it's importance, benefits, inventory. Chapter Principal legislation a brief overview of the content of laws, standards that relate to the topic. There is also described the history and present spatial investigated. Trees, diseases and pests are most commonly found here. The last chapter deals with comparison of methodological approaches. There are mentioned most frequently used methodologies and others. In the experimental part is based on the results of the inventory of trees created a draft safeguards. They also include a proposal for replacement planting. Proposed species are selected to meet the demands on the post as soon as possible and create the required aperture.
32

Návrh schématu výsadby semenných sadů na bázi panmiktického modelu / Proposal of a new seed orchard layout assuming panmictic model

Chaloupková, Kateřina January 2016 (has links)
The new panmictic model of seed orchard scheme for forests trees is described in this thesis. It can be used either alone or in combination with existing designs without losing efficiency. In this case it iscombined with Minimum Inbreeding design. The establishment of seed orchards and importance of achieving panmixy and minimizing inbreeding in the population of seed orchard are described in the theoretical part. The resultant algorithm defines panmictic situation as a situation where close neighborhoods of all possible combinations of clones occur within the seed orchard grid with the same frequency. To achieve this we developed a formula for variance that is minimized as a criterion function. The algorithm has been programmed in R and it was tested for different tasks including balanced or unbalanced numbers of clones and different sizes or shapes (rectangular or non-rectangular shape) of orchard. The model is able to solve all of these situations, and it is very effective especially in the case of balanced numbers of clones. Optimal solution of the given task was often found at the first iteration. To evaluate the relative quality of resulting schemes theoretic proxy to level of maximum panmixy was defined for every specific task- the Theoretical minimum variance. The effectiveness of MI scheme combined with clonal rows was also evaluated. The result is a hybrid scheme with predefined MI clonal rows surrounded by panmictic algorithm, while close neighborhood of clonal rows was also optimized. This scheme will be used for the establishment of Abies fraseriseed orchard in North Carolina under NCSU Christmas Tree Genetics Program. Another possible modifications of the algorithm, such as the inclusion of local separation zones or assortative mating are summarized in conclusions.
33

Management produkčních populací lesních dřevin s využitím metod matematického programování / Management of production populations of forest tree species utilizing methods of mathematical programing

Hořejší, Matouš January 2016 (has links)
Breeding of forest tree species is a great opportunity for the entire forestry sector to succeed in the present modern World. Genetically improved forest trees have much better growing quality and they can sustain higher stress and unfavorable climatic conditions. Efficient algorithms are necessary for optimizing and establishing seed orchards. These should optimally select clones as parents in future seed orchards. In the present thesis, we developed model, based on mathematical programming methods, which creates mix of clones with the maximum breeding value and constraints on genetic diversity.
34

Dendrologicko-ekologické hodnocení biocentra Soutok

Nechvátal, Milan January 2016 (has links)
Aim of this work is dendrological and ecological survey of biocentre Soutok. In the biocentre was established two permanent research plots (PRP), where measurement was realized in years 2013 and 2014. On both PRP was observed number of specimens of individual species and were measured basic dendrometric parametres - high, breast-high diameter, and diameter of the root collar. Throughout biocentre was carried out complete inventory of woody plants and assessed health of woody plants. Results are presented in the form of tables and graphs. Obtained data can be useful for creation new syntactic parts of territorial system of ecological stability in similar localities.
35

Netradiční ovocné dřeviny a jejich ochrana

Korbelová, Pavla January 2016 (has links)
Main topic of this master thesis evaluates deseases and disorders on the school farm of Mendel University Brno. Following fruit trees were closely monitored between May and October 2015: Actinidia chinensis, peach, dogwood, pear, mountain ash, quince, almond, medlar, mulberry, juneberry, sea buckthorn and Rosa villosa. The most serious disease fire blight was not observerd at all, probably because all quince orchards nearby were chopped down several years ago. However there were other serious diseases observerd such as fading of annual shoot of sea buckthorn and mildew on juneberry. Amelanchier lamarcki species were affected more with mildew than A. alnifolia species. There were abiotic disorder observed on mountain ash due to lack of minerals, together with ringfleck mosaic. The least important disease symptoms were observed on peach, dogwood, pear, almond, mountain ash, quince a Rosa villosa. Medlar and mulberry were free from all diseases. All in all, the most important is to keep the right cultivation technique and early removal of infected and cracked branches. Juneberry also requires chemical treatment.
36

Speciální hnojiva a jejich využití při kontejnerové produkci

Adámek, Jakub January 2016 (has links)
The aim of this study was to evaluate the influence of special fertilizers on the quality of nursery plants. The experiment was carried out in 2014 and lasted for one growing season. As a model wood was used kind of Weigela florida (Bunge) A. DC. 'Eva Rathke'. An attempt was made up of five different variants of fertilizers for the basic fertilization substrate and fertilization during vegetation. The influence of fertilizers Multicote, Osmocote, Polyon and Multicote in combination with fertilizer Vitality Complex. Control variant was fertilizing fertilizer YaraMila Complex. Best results showed the control variant. Among CRF fertilizers were tested (with some exceptions) in the monitored parameters statistically significant differences.
37

Sukcese dřevin po požáru na lokalitě Havraní skála v NP České Švýcarsko (výchozí stav)

Jurek, Vilém January 2009 (has links)
No description available.
38

Výmladná schopnost vybraných druhů dřevin na Hádecké plošině

Kůrová, Jana January 2010 (has links)
No description available.
39

Druhové spektrum pupenových obalečů (Tortricidae) na vybraných lokalitách jižní Moravy

Hrudová, Eva January 2004 (has links)
No description available.
40

Okus dřevin působený spárkatou zvěří na ŠLP Masarykův les Křtiny

Krčma, Jan January 2004 (has links)
Angl. resumé

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