Drought Risk Evaluation in Iran by Using Geospatial Technologies
نویسندگان
چکیده
A drought risk map has been developed at the national scale by using remote-sensing satellite data over Iran combining output layers resulting from three main components of a risk-evaluation procedure including Hazard Quantification (HQ), Vulnerability Assessment (VA) and Identification Elements Risk (IER) in GIS environment. In this respect, Drought Severity (DS) was calculated monthly Normalized Difference Vegetation Index (NDVI) (over 31 years 1986–2016). landcover classification slope map, population density maps, irrigated farm percentages provincial were utilized within evaluation (DRE) process. The final reveals that northwest country, with climate similar to central European weather conditions, is exposed maximum risk. contrast, areas an arid climate, mainly located middle Iran, exhibits minimum against drought. Based on southern part Caspian Sea shows very low due moderate subtropical region. outputs research will provide advice warnings help decision makers reduce consequences after prioritizing administrative scale.
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ژورنال
عنوان ژورنال: Remote Sensing
سال: 2022
ISSN: ['2315-4632', '2315-4675']
DOI: https://doi.org/10.3390/rs14133096