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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2026, V. 23, No. 1, pp. 365-372

Monitoring seasonal and interannual changes in the area of open sands and deflated pastures in southeastern European Russia from 2019 to 2025 using Sentinel-2 data

S.S. Shinkarenko 1 , S.A. Bartalev 1 , A.B. Biarslanov 2 , A.V. Kashnitskii 1 , E.A. Loupian 1 , V.S. Poltarin 1 
1 Space Research Institute RAS, Moscow, Russia
2 Daghestan Federal Research Centre RAS, Makhachkala, Russia
Accepted: 03.02.2026
DOI: 10.21046/2070-7401-2026-23-1-365-372
This brief communication presents the results of mapping open sands and deflated pastures in the Russian part of the Caspian Lowland (Astrakhan Region, Stavropol Krai, and the Republics of Dagestan, Kalmykia, and Chechnya) for the period 2019–2025 using Sentinel-2 data. The study employed three-month composite images with cloud cover influence removed, enabling the analysis of not only interannual but also seasonal changes in the area of deflated pastures. The largest area of open sands and deflated territories was recorded in 2020–2021, when it reached 1.5 million hectares (approximately 15 % of the study area). After 2021, a steady recovery of vegetation cover in deflation hotspots was observed, attributed to reduced livestock numbers and improved moisture conditions. By 2025, their area reached a minimum for the entire study period, at approximately 120,000 hectares. Field studies conducted between 2021 and 2025 indicate the recovery of vegetation on deflated pastures, primarily through annual plants and ephemeroids. Consequently, a high risk of intensified deflation processes remains under unfavorable hydrothermal conditions and increased grazing pressure.
Keywords: remote sensing, Sentinel-2, deflation, desertification, Kalmykia, Caspian region, Black Lands
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