Urban Expension Analysis of New Cities in North Africa, using Remote Sensing and GIS betewen 2004 – 2024. Case Study of Sidi Abdellah, Algeria

This research has discussed the patterns of urban expansion in the new city of Sidi Abdellah, Algiers capital from 2004 to 2024. The time-series analysis was conducted by measuring changes in built-up areas defined with the help of multi-source remote sensing data, such as the GLC_FCS30D dataset, and Sentinel-2B satellite images. The classification of the urban development for the three dates, which includes 2004, 2014, 2024, is performed with a subsequent accuracy assessment and validation of the results obtained. Consequent changes are traced, analyzed and the results demonstrate the features of urban transformation that can be seen as rapid and patterned. This fast change patterned underlines the importance of urban expansion that should be well-designed and effectively implemented. The proposed model of urban expansion focuses on minimizing environmental impacts and preventing environmental degradation, while reserve the urban areas and their expansion. This work provides insights into the patterns of urban expansion in the new city of Sidi Abdellah, Algiers capital, the outcomes of the research can be usable by policymakers, planners and other stakeholders who are engaged in environmental issues.