A REMOTE SENSING APPROACH OF LAND AND WATER CONTENT CHANGE BETWEEN 2014 AND 2024 TO THE PORSUK DAM AND ITS NEAR SURROUNDINGS

Yıl 2025, Cilt: 14 Sayı: 1, 1 - 13, 29.01.2025

Kübra Günbey , Harun Böcük

https://doi.org/10.18036/estubtdc.1509648

Öz

Observation, monitoring, and characterization of land changes in natural ecosystems that are under the influence of many natural or anthropogenic environmental factors are very important in terms of taking effective and sustainable management decisions and protecting them. Today, remote sensing methods facilitate continuous and controlled spatial change monitoring studies, especially in large areas, with the many different methods and techniques they provide, and thus offer cost and time effective solutions. In this study, it was aimed to determine the changes in land and water potential of the Porsuk dam lake and its near surroundings, located between Eskişehir and Kütahya provinces, using remote sensing methods over a 10-year period. In this context, Landsat satellite data for the years 2014 and 2024 and the days with the least cloudiness were obtained, and normalized difference vegetation index (NDVI) and normalized difference water index (NDWI) calculations were made on these data using the ArcGis/ArcMap program. Later, the obtained results were compared and changes in land and water potential were determined. According to the results of NDVI analysis, it was determined that the presence of forests (4.78%) and areas with herbaceous vegetation (5.56%) increased in the 10-year period, whereas soil (-2.70%), tree/shrub (-1.26%) areas and the water body decreased (-5.87%). According to the results of NDWI analysis, it was determined that dry (2.02%) and moderately dry (10.81%) areas increased, while water body (-8.87%) and humid areas (-11.71%) decreased. The results were also supported by surface temperature analysis. Since the results obtained from the study include data on temporal and spatial changes, it is thought that they will contribute to future planning, management and decision-making processes and studies to be carried out in this field.

Anahtar Kelimeler

Land change, Ecology, NDVI, NDWI, Time series.

Kaynakça

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