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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.
91

Uplatnění ekologických a fytocenologických analýz travních porostů při harmonizaci jejich produkčních a mimoprodukčních funkcí / Application of ecological and phytocenological analyses of grasslands in harmonisation their production and non-production functions

TURKOVÁ, Jitka January 2007 (has links)
In the years 2005 - 2006 it was practised typological maping of selected meadow and pasture areas in Kardašova Řečice (439 m n.m.). The selected areas of permanent grasslands were separated into parts by growth types, where it was observed: projective dominance and frequency of individual species, the amount of primary production of biomass, the underground water level.
92

Zjištění a vyčíslení nákladů na výrobu sena v jednotlivých alternativních uspořádáních technologických linek. / The location and exppressing in number costs on production of hay in single alternate of ordering technological line

ŠVARC, Miroslav January 2009 (has links)
The graduation thesis is described economical valuation of production hey. There is described methods and condition of measure consumption a fuel of energetic vehicle and working set and demand of time for provide sinlge technologic operation of harvest. The measure value was used for assesment a general straight cost on the produciton of hey. In the next point is described technologic procedure of pruduction hey and structure technologic line. The one part of graueted thesis is analysis of using areas of perennial grass stands and their characteristic.
93

Design of Application for Assessing the Height of Trees in Forest Stands Based on Images from an Unmanned Aerial Vehicle

Machala, Martin January 2016 (has links)
Various remote sensing methods are being utilized to assess fundamental properties of forest stands, such as the height of trees, already for decades. Nevertheless, the use of Unmanned Aerial Vehicles in the combination with Structure from Motion software for these purposes, experiences its boom right now and thus not many pertinent studies exist yet. Such system producing image-based point clouds was utilized in this work to gain the canopy elevation data. To identify individual trees and to extract their height from these remote sensing data, a unique software tool called 'UAV Forest Explorer' was developed. Twenty forest study plots was established to acquire the field measurements ground truth data about almost 1 500 trees to thoroughly test the tool and calculate demanded statistics. The research proved, that the tool is fully applicable on all types of forest stands.
94

Zhodnocení dopadů sucha v roce 2015 na lesní porosty na revíru Dzbel, část Zadní hory, Lesní správa Prostějov LČR

Pospíšilová, Lucie January 2017 (has links)
The forests are very susceptible to the climate changes, because they are not able to adapt quickly to the changes of the environment due to their longevity. The drought belongs to the group of primary abiotic factors, which significantly affect the health condition of the stands and thus also the extent of salvage logging. This diploma thesis evaluates the impact of extreme drought in 2015 on the stands of the forest area named Zadní hory (close to the town of Dzbel, Forest administration Prostějov). The most endangered tree species is the spruce, due to it´s predominant occurrence in the mentioned area. This work should evaluate the effect of both abiotics and biotics stressors on the drougt-weakened stands and suggest the options for reduction of the damages.
95

Obnova lesa na kalamitních holinách VLS, s.p., divize Lipník nad Bečvou, LS Hlubočky

Provazníková, Pavla January 2017 (has links)
The aim of the dissertation was to analyze the state of cultures in bare areas incurred by the withering away of spruce growth. The dissertation was undertaken on the properties of VLS ČR, s. p., in the economic forest unit of Hlubočky and Bores. The monitoring took place in 18 research areas which were afforested between the years 2007-2015, where 9 areas were afforested with Norway spruce and 9 with European beech. The height of the over ground part and the thickness of the root crown were measured and the presence of damage caused by wild game was evaluated. The monitoring for the purpose of establishing the state of the young spruce and beech growth took place in 10-15 year old growth areas where the trees per hectare, damage by wild game and the percentage of defoliation were evaluated. The third aim of this work was the framework evaluation of the afforestation costs and the care of the cultures according to data from forest management accounting. The monitoring of research areas afforested between the years 2007-2015 found that beech plants were more damaged by browsing than spruce plants. The monitoring of young spruce and beech growth established more damage of the young spruce plants by deer barking and browsing rather than the young beech plants, which are healthier. It was further discovered that the beech growth from natural renewal, which are thicker, are less damaged by wild animals. The evaluation of data from the forest management accounting established that the costs for one renewed hectare on average amount to CZK 64,000, the treatment of one hectare against forest weeds on average cost CZK 9,700 and the protection of one hectare against wild game expends on average CZK 3,470.
96

Vliv způsobů a intenzity využívání na fytocenologický vývoj a biodiverzitu travních porostů. / The influence of way and intensity of grassland management on phytocenological dynamics and biodiversity of grasslands.

KONDRÁTOVÁ, Petra January 2013 (has links)
The main objective of this thesis was to assess the influence of methods and intensity of use on phytosociological evolution and biodiversity of grasslands. This work includes grasslands in terms of their distribution, different ways of management and use. An important goal of this work was to evaluate the incidence of plant species in grassland lying in selected localities of the Czech Budejovice, Slavošovice and Radostice. The next section was set calculation and maintenance of the water and nutrient regime on the site fallow and statistical processing of data at the sites.Based on the findings were prepared tables and graphs that confirm and in some cases disconfirm occurrence of plant species with different modes of grassland management (mowing, grazing, fallow).
97

Vliv aplikace organických hnojiv na botanickou skladbu, diverzitu a pícninářské charakteristiky travních porostů / The influence of organic fertilisation on botanical composition, diversity and fodder characteristics of permanent grasslands

KINCL, Petr January 2018 (has links)
In connection with the growing area of permanent grasslands in the Czech Republic, their productive and, above all, non-productive importance is at the forefront. In addition to forage production, meadow stands represent an important component of the environment in terms of biodiversity conservation. The aim of this diploma thesis was to monitor the influence of organic fertilization on land in the cadastral of Cekov and Kařez. Observations were carried out on unheated and organically fertilized localities in 2017. Higher botanical diversity showed unheated land, where the herbal component and clover predominated. There was a higher proportion of grass on the fertilized land. In terms of grassland quality, fertilized plots were best assessed. The data analyzed were statistically evaluated.
98

Vliv různého hospodaření na produkci, strukturu a chemické složení nadzemní biomasy v povodí Mlýnského potoka / Effect of different management on the production, structure and chemical composition of abovegroung biomass in the Mlýnský potok catchment.

TRUHLÁŘ, Martin January 2015 (has links)
The aim of the thesis is to assess the changes in production and structure of surface biomass (the proportion of grasses, clovers and other plants) and its chemical compound in scythed and pastured grass areas in the monitored areas in the Mlýnský potok basin in years 2012 and 2014. The area is situated on the right bank of Lipno dam in Pasečná land register, 784 820 meters above sea-level. There were established three permanent sampling points in the pastured as well as scythed areas in the Mlýnský potok basin. Four samples of biomass from the area of 1 sq m were collected in each of these sampling points. These were collected on 20th June 2012, 11th September 2012, 17th June 2014 and 10th September 2014. The collected biomass was then divided into agro-botanical groups (grasses, clovers and other plants) and afterwards it was dried and weighed. The chemical analysis was conducted by a certified laboratory AGRO-LA, Ltd. in Jindřichův Hradec. The aim of the analysis was to find out the amount of nitrogen, phosphorus, potassium, magnesium and calcium. By assessing the development of the overall production of the biomass in 2012 and 2014 in the sampling area we found out a considerable decline of biomass in scythed areas and an increasing difference in the average amount of biomass between scythed and pastured areas during the monitored period. These findings were assessed as statistically conclusive. By assessing the development of overall proportions of the agro-botanical groups we could see a substantial decrease in grasses and on the other hand an increase of clovers and other plants in scythed areas compared to pastured areas. The difference between the proportion of grasses and other plants proved to be statistically conclusive. By assessing the development in difference of the overall average amount of nitrogen in the biomass, there emerged a considerable increase in the amount of nitrogen regardless the way of management. As far as phosphorus is concerned, we found out a decreasing difference in its amount between scythed and pastured areas. The amount of potassium was considerably lower in scythed areas, whereas calcium showed the exact opposite. Statistically conclusive were the findings of substantial increase of nitrogen in the surface biomass and also the changes in the amount of potassium and calcium due to the management. By evaluating these outcomes we confirmed that the permanent grass areas have a very variable productive and structural potential which holds true also for their chemical compound.
99

Vliv ekologických podmínek na travní porosty a optimalizace pratotechnických postupů v oblasti Borkovic. / The influence of ecological conditions on permanent grassland and optimalisation of pratotechnic practises in Borkovice area

DUŠÁK, Radim January 2016 (has links)
This dissertation thesis researches the impact of ecological conditions on the permanent graminaceous cover not faraway from the peatland in the Borkovice region. These ecological conditions primarily mean water regime of the habitat. The nutritive regime and the fodder crop value are monitored in this thesis. These data were acquired with the help of the vegetation composition, using bio-indikative methods. Resulting values are described in the thesis, and their mutual relations are also stated there. In accordance to the ascertained results, proper pratotechnic measures were proposed. These measures try to harmonize the productive and non-productive functions.
100

Struktura a vývoj autochtonních bukových porostů v CHKO Broumovsko. / Structure and development of autochthonous beech forests in the protected landscape area Broumovsko.

Gysin, Romana January 2016 (has links)
The thesis describes the horizontal and vertical structure of two permanent research plots with the developmental stages of the tree layer of native beech stands in NPR Broumov in the area CHKO Broumov nature reserve in the Sudetenland. The horizontal structure of the tree layer is random and in the developmental stages of natural regeneration. The average number of individuals natural recovery is around 15 100 individuals per hectare.

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