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Evaluation of global changes of forest land based on remote sensing
Hladká, Anna ; Štych, Přemysl (advisor) ; Kupková, Lucie (referee)
Evaluation of global changes in forest area based on remote sensing data Abstract: The aim of this project is using remote sensing data to assess change in global forest area. This work should give the outline of the principles of land cover classification, with a focus on forests based on satellite images, but also show a real solution in the evaluation of changes in forest areas in two selected regions. The first part is performed a literature review of all aspects of this sub-topic from the basic principles of remote sensing across the typology and characteristics of satellite sensors, which are giving the satellite images to land cover classification systems and characteristics of forest area. The next section describes the basic procedure for classification of satellite imagery and its possible variants. In my work there are explain the image corrections, the supervised and unsupervised classification, the method of checking the accuracy of classification or use of software. Selected area for my work was Riau in Indonesia and state of Oregon, USA. To these regions there are demonstrated practical procedure for classifying land cover and then its changes from the forest areas. In conclusion of my work the results are discussed and compared with available land cover databases. Key Words: Remote Sensing,...
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Možnosti využití hnojení při zalesňování nelesních půd v PLO 31 Českomoravské mezihoří
Dujka, Petr
An afforestation of agricultural lands in the Czech Republic has a long tradition. In the future, a few thousands of hectares of agricultural lands is considered to be afforested. The aim of this thesis is to research possibilities of fertilisation usage in process of agricultural lands afforestation within Natural forest area (NFA) 31 Českomoravské mezihoří. The research part of the thesis contains results of soil and nutrition analyses applied in Letovice-Kochov research area. The main goal of analyses was to find the impact of fertilisation on chemical soil characteristics, on nutrition of Norway spruce's needles (Picea abies (L.) Karsten), on the development of morphological quantity, and on the health of specimen. All of the characteristics are assessed in the context of climate in 2016. The positive effects of fertilisers were researched despite a low-humid year. The best effects were spotted at fertiliser SilvamixR30. To the results, SilvamixR30 fertilizer could be used in praxis, especially for agricultural lands afforested in named NFA.
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Výsadby sadebního materiálu v zimním období
Šarina, Michal
This thesis deals with the issues of planting in two different months of the same year. Winter planting (7.-8. 2. 2018) and spring planting (9. 4. 2018) of Fagus sylvatica L. and Quercus robur L. seedlings. Both plantings were made in forests of the company Lesy ČR s.p. in district Šilheřovice. Variants with the root system covered and not covered were planted for both of the plant species. The thesis also describes both plant species and the ways of planting of both variants of planting material. It also describes the problems of forest replenishment and it’s difficulties during the environmental changes. The data that were gathered in terrain were processed with use of statistical method T-test (Student’s test). Grow lengths of the above ground parts were measured, length and width of leaves, also the width of the root collar. All were measured on the randomly taken 100 plants for each variant. On base of this information the thesis concludes which of the variants of root coverage and year period is best for planting in this district. It was discover that for this locality and in this year the planting was most successful for Quercus robur in winter time and in root covered variant. For Fagus sylvatica the best planting time was spring and also the root covered variant.
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Inventarizace škod prasetem divokým na kulturách lesních dřevin
Glogar, Jan
Recently, we have increasingly encountered damage to wild boar on planting. Whether the seedlings are plucked out or scraped off, or if the overground or root pack is damaged, these can be fatal for next growth. This work tries to find out what information is currently available about the issue, how frequent the problem is in the Czech Republic, which experiences of people who have met these damages and how to be successful in protection. Finally, the obtained data are evaluated and a set of recommendations is formulated to minimize this problem.
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The study of the recreational use of El Bierzo (Spain)
Fernandez Arias, Pablo
The main idea of this study is to develop various industries that have this area as well as having a vision of global set both politically Bierzo, economically and socially, in order to implant companies in different sectors later cited with an environmental and landscaping protecion for improvement and enjoyment of all residents and visitors to this area and to protect the different ecosystems, vegetation and wildlife threatened by various industries that can destroy large areas of natural interest. All this is justified by the need to advance a direcion to protect the environment and allow a rural development according to environmental protecion implemented by the various European, Spanish and regional policies for their impact as small as possible. At first discussed in which the climate, geology, hydrology of the area, also the historical-social answer was analyzed and an analysis of the forestry sector, finally has developed an inventory of vegetation and wildlife analyzed It exists in this region. The purpose of this analysis and inventory has been developing and publishing the different conclusions and results that can be read later.
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Evaluation of global changes of forest land based on remote sensing
Hladká, Anna ; Štych, Přemysl (advisor) ; Kupková, Lucie (referee)
Evaluation of global changes in forest area based on remote sensing data Abstract: The aim of this project is using remote sensing data to assess change in global forest area. This work should give the outline of the principles of land cover classification, with a focus on forests based on satellite images, but also show a real solution in the evaluation of changes in forest areas in two selected regions. The first part is performed a literature review of all aspects of this sub-topic from the basic principles of remote sensing across the typology and characteristics of satellite sensors, which are giving the satellite images to land cover classification systems and characteristics of forest area. The next section describes the basic procedure for classification of satellite imagery and its possible variants. In my work there are explain the image corrections, the supervised and unsupervised classification, the method of checking the accuracy of classification or use of software. Selected area for my work was Riau in Indonesia and state of Oregon, USA. To these regions there are demonstrated practical procedure for classifying land cover and then its changes from the forest areas. In conclusion of my work the results are discussed and compared with available land cover databases. Key Words: Remote Sensing,...
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Growth performance of common-sized planting stock and saplings after plantation on forest sites
Kaiser, Josef ; Kuneš, Ivan (advisor) ; Tužinský, Marek (referee)
The clear-cut area which is afforested in the Czech Republic is around 20 th. hectares large annually. In the last decades, we have observed frequent periods of the spring and late summer drought, which significantly negatively influence survival of the reglarly used transplants (RUT) however. Thus, it is necessary to search methods, which can decrease such losses. One possiblity how to solve this problém is to used containered transplants, the second one is the use of the plant material (PM) of bigger size (semi-large-sized=SLSPS and large-sized planted stock=LSPS). These larger plants are more resistant to unsuitable influences of environment than the RUT. The advantage of SLSPS and LSPS is also shorter time of necessary care to plants and lower costs to secure plants in comparison to RUT. Above mentioned facts were taken into consideration in creation of instructions for my bachelor thesis. The goal was to estimate the parameters of mortality and growth of selected various PM, moreover on sites heavily influenced by human activities. As model trees were selected: oak (Quercus robur) and lime (Tilia cordata). PM was generally bare-rooted (RUT, SLSPS and LSPS) and planting was done by mechanize equipment (into bored holes) at study sites Truba (Kostelec nad Černými lesy) and Hůrka (Planá nad Lužnicí). The first part of experiment was established at Truba on area of former forest nursery and cosisted of lime RUT and LSPS, the second one was established at site Hůrka in area of former sand querry, where RUT, and oak and lime SLSPS and LSPS were used. No one site was moved during experiments. The measurement on Truba was repeated on spring and on autumn 2012-15 and in 2015 on Hůrka. The height of PM was evaluated by using scale lath, the thickness of stem was measured above ground by using digital scale. Subsequently, data were evaluated in Excel and statistically tested by Kruskal-Wallis test. The results indicate, that mortality of RUT at Truba is 5 times larger than that of LSPS. The similar result was obtained also at Hůrka, the mortality of lime RUT was twice larger than in case of LSPS however. The lowest mortality was observed surprisely on SLSPS. The comparison of the oak RUT and LSPS indicated no any differences in mortality. The mortality of oak PM was generally significantly lover than lime PM one. Statistical tests also indicated, that the size of study sets of PM was too low for optimal scientific evaluation of selected parameters. The obtained results also indicate, that important factor, which influences mortality must be (apart from type of the PM) also additional, non-defined factors of environment up to now.
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Analysis of production potential of forest stands on former agricultural land in Doupovske hory Mts. (VLS ČR, s.e., Division Karlovy Vary)
Sedláček, Jiří ; Bílek, Lukáš (advisor) ; Otakar, Otakar (referee)
This diploma thesis evaluates the structure and development of forest stands on former agricultural land in the conditions of Doupovské hory, VLS ČR, s.p. The main objective of this research was to compare production and growth characteristics of following tree species: Picea abies (L.) KARST., Larix decidua MILL., Acer pseudoplatanus L., Alnus glutinosa (L.) Gaertn. and Populus nigra L. Stand structural characteristics were measured on 5 circular plots (500 m2) for each tree species. Beside basis dendrometric characteristics, health status of individual trees was evaluated and increment cores were taken for the description of growth dynamics (n > 10 for each tree species). Software Statistica 12 was used for the comparison of production parameters. Comparing all types of damage, the difference between alder (0.084) and maple (0.091) was not statistically significant, while larch (0.356) and poplar (0.513) both were significantly different from the first two mentioned tree species. The highest damage was confirmed in the case of spruce (0,736), which differed from all other species. On the other hand, spruce had the highest standing volume (416.8 m3.ha-1, 29.7 SD), followed by poplar (350.0 m3.ha-1, 91.7 SD). The lowest standing volume was stated in the case of maple (182.9 m3.ha-1, 73.3 SD), followed by larch (238.3 m3.ha-1, 57.7 SD). For all tree species we saw during the observation period decrease of diameter increment. The steepest decline is obvious for larch and alder, on the contrary relatively stable growth pattern was stated for maple and to a certain extent also poplar. Based on the research results, management guidelines for the selection of appropriate trees species and regeneration of studied stands are proposed.
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Growth performance of containerized and bare-rooted planting stock
Pechman, Petr ; Kuneš, Ivan (advisor) ; Otakar, Otakar (referee)
The aim of this thesis is to analyze the development and growth of containerized and bare-rooted seedlings of Norway spruce on the plots situated on the Dolní Lomnice Forest District, a division of Karlovy Vary VLS ČR, s. p. (Army Forest and Estates of the Czech Republic). In this work addressed the following sub-tasks: comparison of mortality, height increment and increment of root collar, root development, analysis of cost recovery stands on the site.
Three years after the founding of the plots it was discovered that containerized planting stock reached higher relative increment. When using a planting hole technology, the mortality was in both types of planting stock approximately similar. Furthermore, it was found that containerized planting stock planted with the planting hole technology, a higher incidence of advent naturally developed roots occurred. The planting technology using a loading mandrel (similar typesetter) used for containerized planting stock was assessed as an unsuitable and also the most frequent presence of unnatural root architectonics (deformations and secondary roots, if they were ever developed) it was demonstrated. An economic study showed that the overall costs for the forest regeneration using of the containerized planting stock are higher compared with the bare-rooted planting stock.
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