The study examined the effect of urbanization on green areas in Calabar metropolis. The aim of the study was to
see how changes in land use due to urbanization have affected the green area in Calabar. Data for the study
was obtained from aerial photographs and was considered within the period of2004 to 2012. Remote sensing
and geographic information systems (Arc view GIS 9.3 software) technology was used in change detection
analysis. The study revealed there was anincrease in the amount of urban developed space from80.96 sq. km in
2004 to 111.26 in 2009 and125.125 in 2012. Therefore, a total of 44.165 sq.kmof urban green space have been
lost to built-up areas (urbanization). Based on these, caution should be applied in this increased and sudden
urban expansion, as urban green areas play very significant roles in the maintenance and sustenance of
ecological balance on the environment and urban ecosystems