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A usability of remote sensing for evaluation of economic impact of drought
FRANKOVÁ, Lenka
Drought is a natural phenomenon which has got an important influence on human economic activity and other areas of human life. This work, based on literary sources, summarizes current available information about the issue of drought. The work is primarily focused on agricultural problems with drought in the Czech republic but summarizes even the ohter problems of drought, for example sociological impacts. There is also a perspective given to the generally used methods for studying and evaluation of drought. Considering the relation of drought to water stress of plants and vegetative covering the problems are also summarized. Besides the evaluation of drought and related problems, the work deals with the question of the possibility of usage of technology for remonte sensing the Earth in evaluation of drought and water stress of vegetative covering which may be the indicator of the drought. There are discussed possibilities of usage optical and thermal methods. The problem of drought is duscussed in broad context of ecological function of the landscape. Potencial human influence on drought is duscussed.
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Analysis of current condition, revision and testing of new procedures during the formation of structural elements TSES selected cadastral areas Novohradsko.
SÍČOVÁ, Petra
Territorial system of ecological stability is artificial, interlinked set of natural and altered similar to natural ecosystems that sustain the natural balance. In selected area Novohradsko was approved plan TSES already a decade ago. This study revises the area according to the standard method that is based on biological evaluation. During updating natural segment of area are being tested and used the new procedures, which include the functional aspects of the landscape. Specifically, they are based on physico-chemical evaluation. Data from the mapping of the defined area were processed and analyzed using GIS tools. The method of the functional aspects of landscapes can usefully complement the standard methodology with the objective identification of optimal functional and dysfunctional areas, which are an alternative to the segments of the skeleton of ecological stability.
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Evaluation changes in The White Carpathians PLA with taking advantage of materials of remote sensing
Nováková, Eva ; Pechanec, V.
The objects of our work is been on th basis of photograph, field research and other materials the evaluation of the change in the studied area. The basic background data are the thee aerial photos and the vector polygonal layer. The results of the visual analysis were logged in ArcView GIS, where the four vector layers representing the land cover development. According to the proportional representation of the land cover deals with the area which is not much affected by human. The most frequently occurred are the permanent herbages and the forest stands, which have the area of about 80%.
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Sodar measurements used in an interpretation of dial data
Střižík, Michal ; Bezpalcová, Klára ; Engst, P. ; Jaňour, Zbyněk ; Keder, J. ; Šeděnková, Hana ; Zelinger, Zdeněk
Remote sensing techniques are nowadays widely used next to classical in-situ measurements for studying properties of atmospheric boundary layer (ABL). Doppler SODAR (Sound Detection and Ranging) was introduced to skilled public for the first time around 1975 and today is used in routine investigations of thermal structure, turbulence and vertical mass movement in ABL. It is also used for estimation of mixing layer height and for continuous monitoring of wind speed and direction. Application of REMTECH Doppler SODAR PA2 system as a support tool for studying pollutant dispersion in ABL is demonstrated on model studies performed in urban and suburban areas with use of combined mobile detection system DIAL LIDAR 510M / SODAR PA2.
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Remote-sensed monitoring of norway spruce forest ecosystems
Malenovský, Z. ; Cudlín, Pavel ; Moravec, Ivo
This contribution informes about methods and preliminary results of the project following objectives:Investigate possibilities of the recognition of individual types and periods of multiple stress response behaviour and spectral properties of Norway spruce (Picea abies (L.) K a r s t.) at the shoot and crown levels through spectrometric measurements of needles, shoots and branches, supported by the foliar pigments and cellular compound laboratory analyses, and through analysis of canopies from remote-sensed hyperspectral imagery.Propose a method for estimation and interpretation of multiple stress response history and crown-status assessment of Norway spruce forest stands by the remote sensing approach, via analysis of hyperspectral images.
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