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<p>This study explores the effects of urbanization on the sustainability of river networks in Serbia by applying integrated GIS and Remote Sensing techniques for the period 2002–2022, with projections to 2050. By integrating Digital Elevation Models (DEMs), land use data, and demographic information, the research evaluates spatial and temporal changes in river network density, morphology, and overall hydrological stability across 29 administrative districts.The findings demonstrate a clear inverse relationship between urbanization intensity and river network density, with reductions reaching up to 20% in major urban centers such as Belgrade, Novi Sad, and Niš. Key transformations include the decline of perennial tributaries, increased fragmentation of river systems, and the transition from natural dendritic structures to simplified drainage patterns. Spatial analyses further show that the most significant impacts occur within a 2&#xa0;km buffer of urban-industrial zones, highlighting the influence of land sealing and infrastructure expansion. Future projections indicate continued growth of urban corridors along the Danube-Tisa-Sava and Great Morava valleys, which may intensify pressures on flood regulation capacity, groundwater recharge, and ecological connectivity. The study underlines the importance of integrated urban–water management strategies and presents a transferable GIS-based framework for assessing urban impacts on river systems in rapidly developing environments.</p>

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GIS-Based Assessment of Urbanization Impacts on River Network Sustainability

  • 期刊论文

  • 发表日期：

    2026年4月1日

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  • Aleksandar Valjarević

摘要

This study explores the effects of urbanization on the sustainability of river networks in Serbia by applying integrated GIS and Remote Sensing techniques for the period 2002–2022, with projections to 2050. By integrating Digital Elevation Models (DEMs), land use data, and demographic information, the research evaluates spatial and temporal changes in river network density, morphology, and overall hydrological stability across 29 administrative districts.The findings demonstrate a clear inverse relationship between urbanization intensity and river network density, with reductions reaching up to 20% in major urban centers such as Belgrade, Novi Sad, and Niš. Key transformations include the decline of perennial tributaries, increased fragmentation of river systems, and the transition from natural dendritic structures to simplified drainage patterns. Spatial analyses further show that the most significant impacts occur within a 2 km buffer of urban-industrial zones, highlighting the influence of land sealing and infrastructure expansion. Future projections indicate continued growth of urban corridors along the Danube-Tisa-Sava and Great Morava valleys, which may intensify pressures on flood regulation capacity, groundwater recharge, and ecological connectivity. The study underlines the importance of integrated urban–water management strategies and presents a transferable GIS-based framework for assessing urban impacts on river systems in rapidly developing environments.