Картографирование пространственной структуры геосистем центральной части Баргузинского хребта

Abstract

The article presents the results of the landscape study, with the analysis of landscapes and mapping of the area of the 151 km2 polygon. The polygon is located in theми Eastern Transbaikal, covering the part of the Urbican basin and its mountainous frame. For the analysis of the structure of geosystems and the estimation of disturbance, the basic geosystem approach is applied to modern geoinformation-cartographic and remote methods. Based on of V. B. Sochava’s theory of geosystems it is meant for use in processing and ordering a large body of information. The regional background and the main factors of the landscape differentiation of the study areas were analyzed. It is established that the main factors influencing the landscape diversity are the aspect and steepness of the slopes, the composition and structure of rocks, the absolute height, the amount of atmospheric precipitation, and pyrogenic impacts. The high-altitude, middle and lower parts of the Urbican basin differ from each other in terms of the development of geosystems in different high-altitude tiers, when the influence of the climatic factor and cryolithomorphic with slope-cryogenic processes increases with altitude. Geosystems at the level of homogeneous facies and their groupings are displayed on a large-scale map at a scale of 1:50,000. taking into account natural and pyrogenic characteristics. The assessment of changes in the structure since the work of the Barguzin expedition of 1914–1915 under the influence of fires was carried out, while the emphasis was placed on the change of the dark coniferous component in the vegetation cover.