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Horodynamic Mapping of Open Sands in the East of the Stavropol Region
- Authors: Doroshenko V.V.1
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Affiliations:
- Federal State Budget Scientific Institution “Federal Scientific Center of Agroecology, Complex Melioration and Protective Afforestation of the Russian Academy of Sciences” (FSC of Agroecology of the RAS)
- Issue: No 3 (2024)
- Pages: 94-102
- Section: ИСПОЛЬЗОВАНИЕ КОСМИЧЕСКОЙ ИНФОРМАЦИИ О ЗЕМЛЕ
- URL: https://bakhtiniada.ru/0205-9614/article/view/270605
- DOI: https://doi.org/10.31857/S0205961424030072
- EDN: https://elibrary.ru/FAJTEY
- ID: 270605
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Abstract
The desertification processes that are dynamically occurring in the north-east of the Stavropol Territory are closely interrelated with climatic conditions, which necessitates the rapid mapping of qualitative changes in the state of open sands in accordance with various scenarios. The mapping was carried out on the basis of the technique of chorodynamic (diachronic) mapping for two periods (July-August 2022 and June-July 2023), data on the monthly dynamics of open sand areas, precipitation and dust storms were used to select time slices. The mapping was carried out visually on the basis of multispectral satellite images of Landsat for each month. In 2022, 14 dust storms were registered, in 2023 none were registered, and days with critical wind speeds were accompanied by heavy precipitation, in connection with which a significant decrease in the visible areas of open sands was revealed as a result of overgrowth. Based on the available data, using overlay operations, schemes of qualitative transitions in the test area (part of the Levokumsky district) corresponding to qualitative transitions in the “dry” and “wet” scenarios were compiled. Despite the progressive overgrowth of the sands, stimulated by the absence of dust storms and abundant precipitation in 2023, starting from areas with the lowest sediment capacity, the restoration of the original plant communities without carrying out phytomeliorative measures is extremely unlikely due to high anthropogenic load and seed desertification, as a result of which low-value annual crops grow on open sands (weed solyanka, kumarchik, nightshade horned, etc.).
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About the authors
V. V. Doroshenko
Federal State Budget Scientific Institution “Federal Scientific Center of Agroecology, Complex Melioration and Protective Afforestation of the Russian Academy of Sciences” (FSC of Agroecology of the RAS)
Author for correspondence.
Email: doroshenko-vv@vfanc.ru
Russian Federation, Volgograd
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Supplementary files
Supplementary Files
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1.
JATS XML
2.
Fig. 1. Open sands and rock depressions on fragments of the satellite image (dated 10/21/2023).
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3.
Fig. 2. Diagram of the spatial position of the test area.
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4.
Fig. 3. The scheme of qualitative transitions of the state of open sands in July-August 2022 (“dry” climate scenario).
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5.
Fig. 4. The scheme of qualitative transitions of the state of open sands in June-July 2023 (“wet” climate scenario).
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6.
Fig. 5. Graph of the areas of categories (a) and their shares in the total area of the test site (b) (categories: I – “Sands – Sands", II – “Sands – Not sands", III – “Not sands – Sands", IV – “Not sands – Not sands").
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