Monitoring Meteorological Drought Vulnerability Using Satellite Images of Mazandaran Province

Document Type : Extract article from research project

Authors

1 Associate Professor, Department of Geography and GIS, Faculty of Human Sciences, Golestan University, Gorgan, Iran

2 Associate Professor, Department of Geogrphy and GIS, Faculty of Human Sciences, Golestan University, Gorgan, Iran

3 Graduated in Geography and Environmental Hazards, Golestan University, Gorgan, Iran

Abstract
Background and Objective: Today decision-makers in dealing with drought consider the integrated management approach of crisis management and risk management simultaneously. So far, Mazandaran province has suffered a lot of damage from drought risk. Therefore, determining the level of vulnerability and type of meteorological drought risk situation in the study area, especially in the last two decades, is the main issue of this study.
Methodology: Methodology in order to determine the meteorological drought situation, the Standard Precipitation Index was used in this study. First, the monthlt rainfall statistics for 17 selected meteorological stations in the region were collected and tested for accuracy, precision and feasibility during the common period of 2000-2020. For each of the station in question the percentage of meteorological drought occurrence was determined on an annual time scale. Then the drought Hazard Index (DHI) was extracted by assigning weights and degrees for each of the different intensities. Also the vulnerability of meteorlogical drought was calculated using physical and socio-economic indicators and then the drought- vulnerable zones were determined. Finally based on the two factors of drought hazard index and vulnerability index, the risk of drought damage was calculated and then the zones at risk of meteorological drought were determined.
Results and Findings: Findings and conclusion the results of the research on drought conditions showed that the most severe droughts occurred in the region in 2000, 2008, 2012, 2014, 2016 and 2017. Based on the drought risk index, the results showed that northern part of the region and its central part with an area equivalent to 24% in the SPI index, 22% in the VCI index (vegetation condition index) and 28% in the VHI index (vegetation health index) and 20%   in TCI index (surface temperature index) the area of Mazadran province are very susceptible to the risk of meteorological drought. 35 percent of the province's area, located in the north of the province, has very high drought vulnerability. The results of this study indicate that the risk and vulnerabilities caused by meteorological drought seriously threaten Mazandaran province. Meteorological drought risk maps can be used as a suitable warning tool in the risk reduction action plan for all policmakers, managers and stakeholders of the studied region. This issue is of particular importance in planning agricultural activities and the optimal use of water resources, especially in this province where the livelihoods of agricultural operators depend on both rainfed and irrigated agriculture.

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Volume 6, Issue 4 - Serial Number 22
Winter 2025
Pages 387-418

  • Receive Date 01 July 2025
  • Revise Date 27 July 2025
  • Accept Date 15 September 2025
  • First Publish Date 16 September 2025
  • Publish Date 20 February 2026