Drought safety levels assessment in Uzbekistan part of the Khorezm oasis by geospatial methods
The issue of drought has emerged as a significant challenge in the Khorezm oasis over recent decades. Furthermore, the construction of the Kushtepa canal in Afghanistan is expected to exacerbate the impact of drought in the region. It is of the utmost importance to evaluate the resilience of the oa...
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| Format: | Article |
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Vilnius Gediminas Technical University
2025-06-01
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| Series: | Geodesy and Cartography |
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| Online Access: | https://journals.vilniustech.lt/index.php/GAC/article/view/23771 |
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| author | Muzaffar Matchanov Matías Mudarra Askar Nigmatov Rifat Boymurodov Ruslan Jumabayev Ali Hakimi Otabek Matchanov |
| author_facet | Muzaffar Matchanov Matías Mudarra Askar Nigmatov Rifat Boymurodov Ruslan Jumabayev Ali Hakimi Otabek Matchanov |
| author_sort | Muzaffar Matchanov |
| collection | DOAJ |
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The issue of drought has emerged as a significant challenge in the Khorezm oasis over recent decades. Furthermore, the construction of the Kushtepa canal in Afghanistan is expected to exacerbate the impact of drought in the region. It is of the utmost importance to evaluate the resilience of the oasis to drought in order to ensure effective planning and mitigation strategies. This study employed geospatial data, including the normalized difference of vegetation index (NDVI), land surface temperature (LST), normalized difference of moisture index (NDMI), soil brightness, groundwater table, digital elevation model (DEM), and distance to Amudarya river, derived from Landsat 5 TM, and Landsat 8 OLI/TIRS data (2000–2023). A weighted overlay analysis was employed to identify the most influential factors, which were found to be distance from the river, canal density, soil brightness, LST, and groundwater table. The findings indicate that 3746 km2 of the oasis is safe, while 4644.32 km2, 5563.77 km2, 5486.17 km2, 7832.64 km2 are classified as dangerous, mid dangerous, high dangerous, and extreme dangerous, respectively. It is recommended that agricultural use be prioritised in areas deemed safe, that construction be restricted, and that population migration from high-risk regions to safer areas be facilitated.
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| format | Article |
| id | doaj-art-82e94c51ee8648e99d290f4c1a765aa1 |
| institution | OA Journals |
| issn | 2029-6991 2029-7009 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Vilnius Gediminas Technical University |
| record_format | Article |
| series | Geodesy and Cartography |
| spelling | doaj-art-82e94c51ee8648e99d290f4c1a765aa12025-08-20T02:02:10ZengVilnius Gediminas Technical UniversityGeodesy and Cartography2029-69912029-70092025-06-0151210.3846/gac.2025.23771Drought safety levels assessment in Uzbekistan part of the Khorezm oasis by geospatial methodsMuzaffar Matchanov0Matías Mudarra1Askar Nigmatov2Rifat Boymurodov3https://orcid.org/0000-0002-7459-2710Ruslan Jumabayev4Ali Hakimi5https://orcid.org/0000-0001-7504-6044Otabek Matchanov6Geodesy, Cartography and Cadastre Department, Faculty of Technics, Urgench State University named after Abu Rayhan Biruni, Urgench, UzbekistanCentre of Hydrogeology of the University of Malaga (CEHIUMA), Malaga, SpainGeneral Professional Sciences Department, Academy of Labour and Social Relations, Tashkent, UzbekistanGeography Department, Faculty of Natural and Agricultural Science, Urgench State University named after Abu Rayhan Biruni, Urgench, UzbekistanGeodesy, Cartography and Cadastre Department, Faculty of Technics, Urgench State University named after Abu Rayhan Biruni, Urgench, UzbekistanDepartment of Physical Geography and Ecosystem Sciences, Lund University, Lund, SwedenGeodesy, Cartography and Cadastre Department, Faculty of Technics, Urgench State University named after Abu Rayhan Biruni, Urgench, Uzbekistan The issue of drought has emerged as a significant challenge in the Khorezm oasis over recent decades. Furthermore, the construction of the Kushtepa canal in Afghanistan is expected to exacerbate the impact of drought in the region. It is of the utmost importance to evaluate the resilience of the oasis to drought in order to ensure effective planning and mitigation strategies. This study employed geospatial data, including the normalized difference of vegetation index (NDVI), land surface temperature (LST), normalized difference of moisture index (NDMI), soil brightness, groundwater table, digital elevation model (DEM), and distance to Amudarya river, derived from Landsat 5 TM, and Landsat 8 OLI/TIRS data (2000–2023). A weighted overlay analysis was employed to identify the most influential factors, which were found to be distance from the river, canal density, soil brightness, LST, and groundwater table. The findings indicate that 3746 km2 of the oasis is safe, while 4644.32 km2, 5563.77 km2, 5486.17 km2, 7832.64 km2 are classified as dangerous, mid dangerous, high dangerous, and extreme dangerous, respectively. It is recommended that agricultural use be prioritised in areas deemed safe, that construction be restricted, and that population migration from high-risk regions to safer areas be facilitated. https://journals.vilniustech.lt/index.php/GAC/article/view/23771droughtLSTthe main canals’ densitygroundwater tabledistance from Amudaryadrought safety levels assessment map |
| spellingShingle | Muzaffar Matchanov Matías Mudarra Askar Nigmatov Rifat Boymurodov Ruslan Jumabayev Ali Hakimi Otabek Matchanov Drought safety levels assessment in Uzbekistan part of the Khorezm oasis by geospatial methods Geodesy and Cartography drought LST the main canals’ density groundwater table distance from Amudarya drought safety levels assessment map |
| title | Drought safety levels assessment in Uzbekistan part of the Khorezm oasis by geospatial methods |
| title_full | Drought safety levels assessment in Uzbekistan part of the Khorezm oasis by geospatial methods |
| title_fullStr | Drought safety levels assessment in Uzbekistan part of the Khorezm oasis by geospatial methods |
| title_full_unstemmed | Drought safety levels assessment in Uzbekistan part of the Khorezm oasis by geospatial methods |
| title_short | Drought safety levels assessment in Uzbekistan part of the Khorezm oasis by geospatial methods |
| title_sort | drought safety levels assessment in uzbekistan part of the khorezm oasis by geospatial methods |
| topic | drought LST the main canals’ density groundwater table distance from Amudarya drought safety levels assessment map |
| url | https://journals.vilniustech.lt/index.php/GAC/article/view/23771 |
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