Climate change issues are contemporary global phenomena which affect the largest part of the world in different ways. This paper explores how local communities living in sensitive ecological areas, particularly in river valleys, respond to and adapt to climate change. By employing a qualitative research approach, findings have indicated that heavy rainfall and prolonged droughts coupled with population increase have led to land use changes and loss of biodiversity in the river valley.

 Most of the cities and urban centres of developing nations, Tanzania inclusive are faced with increased urbanization coupled with informal land development in non-designated areas including marginal and hazardous lands. This paper reports the findings of a study undertaken to assess the processes of land development and the associated impacts in Msasani Bonde la Mpunga, a, flood prone area in the City of Dar es Salaam.

La région Tanger-Tetouan-Al Hoceima située au nord-ouest du Maroc a connu, dans des dernières décennies, différents travaux d’aménagement de territoire qui ont eu, certainement, un impact sur le paysage et l’écosystème de la région. La région a accueilli des infrastructures de grandes tailles telles que le port Tanger Med installé au bord du détroit Gibraltar, la ligne de train à grande vitesse reliant Tanger à Casablanca, réseaux routiers, barrages…etc. L’objectif de cet article est de cartographier les changements du paysage de la région via l’analyse diachronique de l’occupation du sol.