Experience in Mapping the Foci of Steppe Fires (Research Methodology and Practical Aspects)
DOI:
https://doi.org/10.17308/geo/1609-0683/2023/3/13-24Keywords:
fire focus, steppe fire, fire-hazardous situation, Burtinskaya Steppe SiteAbstract
The purpose is to improve the methodology of pyrological research based on the experience of mapping fi res foci and interpreting the results obtained. Materials and methods. Satellite images of Landsat (1984-2021) and MODIS (2000-2021), as well as archives of geospatial data based on them, served as the source materials for the identification of fi re foci. Results and discussion. Based on the author's approaches, a cartographic database was formed, including information about 435 fi res foci in the key area for the period 1984-2021. It was determined that the majority (66%) of fi res are confined to dirt roads, river valleys, arable land, which made it possible to assume the causes of their occurrence. It was revealed that the period of fi re activation (1998-2009) was distinguished by the greater remoteness of the foci from the boundaries of the Orenburg Nature Reserve against the background of a decrease in the load on agricultural land. Cartographic mapping of the number of intersections of the mineralized strip by fi res allows to identify the most problematic segments and indicates an increase in the effectiveness of fi re-fighting measures. Conclusions. An algorithm has been developed for assessing fi re-hazardous situations based on the identification of fi re foci and the analysis of spatial and temporal features of their distribution, which can be recommended for the analysis of pyrogenic threats and identification of the causes of their occurrence.
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