Assessment of Urban Land Cover structure Change in Hanoi City from 2005 to 2025 Using Multi-Temporal Remote Sensing Data
DOI:
https://doi.org/10.67484/GeoGIS.83.1205.2026Keywords:
urban land cover structure; multi-temporal remote sensing; urbanization; spatial analysis; Hanoi City.Abstract
Urban land cover change is one of the key indicators reflecting spatial development processes and the degree of urbanization in large cities. During the period from 2005 to 2025, Hanoi experienced rapid urban expansion, resulting in significant changes in the structure of surface land cover. This paper presents an assessment of urban land cover transformation in Hanoi through the integration of multi-temporal remote sensing data and spatial analysis techniques. Satellite imagery acquired for the study years of 2005, 2015, and 2025 was collected and processed to generate urban land cover maps consisting of four major classes: built-up land, bare land, vegetation cover, and water bodies. Based on land cover classification results and time-series change analysis, the study quantified the extent of transitions among land cover types and evaluated the spatial patterns of urban development.The results indicate that the proportion of built-up land increased continuously throughout the study period and expanded predominantly from central urban districts toward suburban areas, whereas the areas of bare land, water bodies, and part of the vegetation cover showed a declining trend. The land cover transformation process exhibited characteristics of increasing construction density combined with outward urban expansion along infrastructure development corridors and newly developed urban zones. The findings demonstrate the effectiveness of using multi-temporal remote sensing data for monitoring urban land cover dynamics and provide a scientific basis for land management, spatial planning, and sustainable urban development strategies in Hanoi.
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