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Location accuracy improvement of watercourses based on airborne laser scanning data
Peterková, Tereza ; Brůha, Lukáš (advisor) ; Tippner, Aleš (referee)
The object of this thesis is to propose the method of location accuracy improvement and longitudinal profile of watercourses using the data of airborne laser scanning. In the thesis the watercourses are seen as valley lines where i tis possible to use the method of terrain brek-lines detection to determine their location. The proposed method processes DMR in the formo f filter point swarm and i tis based od the intersection of planes approximation the slopes adjoined to the watercourse. Primarily the thesis focuses on narrow watercourses in deeply placed valleys and the method is adapted to it. At the same time the proposed method successfully deals with the different accuracy of the primary estimation of the explored watercourse. The end of the work presents and evaluates the results of the used method and the obtained data of the Labe spring region in Krkonoše mountains.
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Automatic Detection and Cartographic Generalization of Spot Heights from Digital Terrain Models
Polášek, Petr ; Lysák, Jakub (advisor) ; Tippner, Aleš (referee)
The aim of this work is to design automatic detection of spot heights from airborne laser scanning data and its generalization. The first part is about the idea of spot height: the importance of spot heights for altimetry representation on maps and suggestions concerning the scatter of spot heights on maps. In the following part, different approaches for terrain critical points extraction (peaks, depressions, passes) from digital terrain models are described as suitable places for spot heights location. Further, we introduce a description of geomorphological characteristics of these points by which is possible to identify its significance and generalize them. In accordance to analysis of Základní mapa ČR and recommendation for spot heights location described in literature we designed own method of automatic generation and generalization spot heights from digital terrain models. This method were implemented and there is a description of the test data and results on the real data DMR 5G of the algorithm in the end of the work. Powered by TCPDF (www.tcpdf.org)
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Location accuracy improvement of watercourses based on airborne laser scanning data
Peterková, Tereza ; Brůha, Lukáš (advisor) ; Tippner, Aleš (referee)
The object of this thesis is to propose the method of location accuracy improvement and longitudinal profile of watercourses using the data of airborne laser scanning. In the thesis the watercourses are seen as valley lines where i tis possible to use the method of terrain brek-lines detection to determine their location. The proposed method processes DMR in the formo f filter point swarm and i tis based od the intersection of planes approximation the slopes adjoined to the watercourse. Primarily the thesis focuses on narrow watercourses in deeply placed valleys and the method is adapted to it. At the same time the proposed method successfully deals with the different accuracy of the primary estimation of the explored watercourse. The end of the work presents and evaluates the results of the used method and the obtained data of the Labe spring region in Krkonoše mountains.
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Preparation procedure of dwarf pine stands removal in the Hrubý Jeseník Mts. summits
Maděra, P. ; Šenfeldr, M. ; Buček, A. ; Tippner, A. ; Roštínský, Pavel ; Culek, M. ; Friedl, M. ; Vavříček, D. ; Pecháček, J. ; Špinlerová, Z. ; Matějíček, J.
The report describes a preparation procedure of dwarf pine stands removal in the Hrubý Jeseník Mts. assessing selected hazardous environmental phenomena possibly occurring in case of its realization. The hazards include hydrological conditions change, rill erosion, sheet erosion, intraskeletal erosion, snow movement, soil retention change, increase in visitors movement, timberline and spruce growth line change, and biomass quantity. A calculation of damage to forest owners due to dwarf pine stands removal from woodland is supplemented. The procedure was certificated by the Ministry of Agriculture of the Czech Republic (Certification No. 101637/2012-MZE-16222/M45).
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Differentiation of dwarf pine covers in the Hrubý Jeseník Mts. with regard to their effects on mountain landscape and hazards related to its clearance
Buček, A. ; Culek, M. ; Friedl, M. ; Kirchner, Karel ; Maděra, P. ; Pecháček, J. ; Roštínský, Pavel ; Sedláček, A. ; Šenfeldr, M. ; Špinlerová, Z. ; Štykar, J. ; Tippner, A. ; Vavříček, D.
The report includes a collection of research studies dealing with selected effects of dwarf pine vegetation on abiotic and biotic natural components and potential hazards related to their clearance, proposed with regard to unoriginality of this species in mountain landscape of the Hrubý Jeseník Mts. Various subjects are solved, involving dwarf pine covers spatial extension, relations of dwarf pine vegetation to geomorphological processes, dominantly slope deformations, its effects on climate, hydrological and nival processes, soil conditions and spruce populations in upper timberline ecoton, geobiocenological typology of the Hrubý Jeseník Mts. summit positions, mapping dwarf pine covers, biotope evolution after their clearance and their biomass quantity.
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Preparation procedure methodology of dwarf pine covers clearance in summit positions of the Hrubý Jeseník Mts
Buček, A. ; Culek, M. ; Friedl, M. ; Maděra, P. ; Matějíček, J. ; Pecháček, J. ; Roštínský, Pavel ; Šenfeldr, M. ; Špinlerová, Z. ; Tippner, A. ; Vavříček, D.
The study summarizes principal natural and social hazards related to planned clearance of dwarf pine covers in the Hrubý Jeseník Mts. and proposes preparation procedure of its future projects leading to their minimalization. The main hazardous factors include change of hydrological condidions, rill and sheet erosion, introskeletal erosion, snow movements, changes of soil rentention ability, increased motion of visitors, changes of timberline and spruce growth and biomass quantity of dwarf pine covers. The report is completed with calculation of damage amounts caused to forest owners due to dwarf pine clearance from forest grounds and some additional economic aspects of this activity.
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