The article discusses the experience of compiling large-scale vegetation maps, the advantages of using aerial photography data from a radio-controlled unmanned aerial vehicle (UAV) and the technology of geo-information systems in combination with ground-based traditional geobotanical mapping methods. The use of remote sensing data is one of the ways to quickly obtain data for vegetation mapping. Currently this method is actively used and developed. However, satellite data has several disadvantages. The use of UAV is a promising direction for timely and cost-effective environmental monitoring. Using the aerial photo obtained in this way, it is possible, on the one hand, to trace the dynamics of vegetation during one season, and on the other, to identify and map both different plant communities and populations of individual species that do not coincide in the phenological phase of development with each other. The aim of the study was to reflect the heterogeneity of vegetation cover on a detailed geobotanical map in a simple way, which will act as the basis for further research. The map constructed by the described method is the most objective reflection of the state of the vegetation cover.
The paper presents the results of a study of icings that form in winter in the southern, Russian part of the Lake Baikal basin. Baikal in the watersheds of small rivers of the Selenga middle mountains. Based on the analysis of meteorological data, multi-temporal space images and materials of field expeditionary studies, the general features of the dynamics of ice floes under conditions of changing climatic cycles are established. The total area of icing, most of which accumulates in the floodplain parts of the valleys of small rivers and along the channels of streams (spring icing), today within the study area is 365 km2. In recent years, the maximum intensity of ice formation was recorded for the period from 1997 to 2001, the minimum falls on 2015-2017. In low-water climatic cycles, the areas and volumes of icings are reduced by 4-6 times in relation to the sizes they reach in the years of manifestation of maxima. Currently, with the onset of a highwater climate cycle, there is a steady increase
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