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GEOSPATIAL ANALYSIS OF LAND COVER DYNAMICS AND RIVERINE CHANGES IN CHAR ASHARIADAHA, RAJSHAHI, BANGLADESH (1988–2023)
By: Md. Imran Hossain, Nafia Muntakim, Shanita Tahnin, Tomalika Biswas and Dr. Md. Redwanur Rahman
Key Words: Land Cover Change, Floodplain Dynamics, NDWI, Remote Sensing, Sediment Redistribution
Vol11-No1-p067-80, December 2024.
AbstractThis study provides a geospatial analysis of land cover dynamics and river transformation in Char (riverine island) Ashariadaha, Rajshahi, Bangladesh, over a 35-year period (1988–2023). Utilizing multi-temporal Landsat imagery, supervised classification, and the Normalized Difference Water Index (NDWI), the research quantifies transitions across four land cover types: vegetation, bare soil, sand area, and water body of river. Key findings reveal substantial vegetation expansion (+10.65km²) and bare soil reduction (-7.85km²), indicating ecological stabilization and sediment redistribution. The NDWI analysis highlights dynamic river transformations, with 9.54km² of erosion and 6.00km² of accretion, underscoring active sedimentation processes. Change detection analysis further demonstrates significant transitions, such as bare soil to vegetation (7.86 km²), emphasizing natural recovery mechanisms.
The study integrates advanced remote sensing techniques to investigate floodplain dynamics in a sediment-rich environment, providing insights into hydrological alterations, biodiversity implications, and land use transitions. The findings contribute to global floodplain research by offering a replicable methodology for monitoring dynamic landscapes using cost-effective satellite data. Actionable insights include the need for floodplain management strategies, reforestation in accreted areas, and sustainable land use practices. This research highlights the critical role of geospatial analysis in understanding and managing complex riverine systems.
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Md. Imran Hossain, Nafia Muntakim, Shanita Tahnin, Tomalika Biswas and Dr. Md. Redwanur Rahman
GEOSPATIAL ANALYSIS OF LAND COVER DYNAMICS AND RIVERINE CHANGES IN CHAR ASHARIADAHA, RAJSHAHI, BANGLADESH (1988–2023)
Vol11-No1-p067-80, December 2024.
https://jenvosci.com/ies-publish/geospatial-analysis-of-land-cover-dynamics-and-riverine-changes-in-char-ashariadaha-rajshahi-bangladesh-1988-2023/Copyright © 2024
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