Detecting changes in vegetation cover in the city of Hail between 1990 AD and 2020 AD using remote sensing and geographic information systems.

Thayed, Maha

doi:10.21608/aafu.2025.323194.1668

Detecting changes in vegetation cover in the city of Hail between 1990 AD and 2020 AD using remote sensing and geographic information systems.

Document Type : Original Article

Author

Maha Thayed

University of hail

10.21608/aafu.2025.323194.1668

Abstract

The research aims to observe vegetation habitats and track trend of their changes spatially in Hail city using Soil Adjusted Vegetation Index (SAVI), and linking this the change in Land Surface Water Index (LSWI). To achieve this aim, the study relied ondescriptive analytical and causal-comparative approach to compare images results Landsat (5, 8) for years 1990, 2000, 2010, 2020.the results of study show fluctuate in upper and lower limits of the Soil Adjusted Vegetation Indexvalues, as the highest value appeared in 2000 at about 0.85, and the lowest at about 0.79 in 2010.When relying on a threshold of 0.1 for the Soil Adjusted Vegetation Index, the area of vegetation cover in Hail city in 1990 was about 13.12 km2, or 1.84% of total area of city, and about 16.5 km2, or 2.3% of total area of city in 2000, and about 12.87 km2, or 1.8% Of total area of city in 2010, about 17.96 km2, or 2.51% of total area of the city in 2020.

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