Abstract
The advantages of a quantitative assessment of the spatial and temporal variability of the boundaries and volumes of ravines using modern means and methods of aerial photography from an unmanned aerial vehicle (UAV) are substantiated, in contrast to traditional survey methods (linear method of benchmarks, tacheometric, aerial and space photography, laser scanning). The erosion zoning and mapping of linear and gully formations on the territory of the Kuitunka, Tarbagataika, and Kunaleika river basins (Selenga middle mountains) are carried out. The reanalysis data were used to assess extreme meteorological events leading to the acceleration of erosion processes. Paleontological material confirms the long duration of erosive-accumulative processes in the Nizhnyaya Bulanka depression. High-accuracy multi-temporal orthophotomaps and digital elevation models of Bulanka gully using unmanned aerial vehicles were produced. The method of quantitative estimation of gully formation rates is offered, which allows estimating with high accuracy the change of area and volume characteristics of erosive forms.
Highlights
Water erosion is one of the main factors of soil degradation and decrease of the arable land capability
This paper presents the results of the complex study of the erosive forms of relief, including their dynamics and current state, with the use of the newest surveying equipment
At the first stage of research, in order to detect the dynamics of erosion processes at the key gully in the Nizhnyaya Bulanka depression, the multi-temporal tacheometric survey was performed on
Summary
Water erosion is one of the main factors of soil degradation and decrease of the arable land capability. It leads to the formation of long gullies, the loss of soil layers, and the removal of significant areas of agricultural land from crop rotation [1,2,3,4]. The study of erosion processes and erosive relief is a very popular topic of research. This is due to the urgency of this issue, creating a breadth of directions and opportunities for a variety of studies. In connection with the development of science and technology in recent years, there are more publications on methods of study of erosion forms of relief, which are constantly being improved [5,6,7]
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