Abstract
Abstract. The security instability in the Central African Republic (CAR) forces the civilian population to flee the provinces to seek refuge in Bangui city, or in other countries. Human activity, which is very beneficial in the context of urbanization, is the main driving force of change in the city of Bangui, but also has a negative effect on the geoenvironment. Multispectral images data Landsat TM5, Landsat 7 ETM+ and Landsat-8 OLI of the years 1986, 2003 and 2020 was used to investigate Land use land cover (LULC) change of the city of Bangui. Maximum Likelihood (ML) classification algorithm was used to produce the map land use/land cover change detection in the study area. In Bangui city, four major classes have been identified, including vegetation, built-up, bare soil / rock and water. The analyses of the classified maps showed that Bangui city has been changed between 1986 and 2020, exceedingly area increased for built up (145.81%), vegetation (5.59%) and water (3.46%), it has however decreased for bare soil/ rock (40.60%). The overall accuracies and overall Kappa statistics achieved were 92.5%, 82.5% and 87.5%, and 0.90, 0.87 and 0.83 for 1986, 1999 and 2018 images, respectively.
Highlights
Land use/land cover change detection is considered to be the most effective remote sensing tool of the past to study the different phenomena related to the development of urbanization or the change of a region (Lambin, 1997)
Several authors have used the different methods of remote sensing and GIS to evaluate the evolution of urbanization, the change of an area or the impact of Land use land cover on the geoenvironmental (Duncan 1993; Chen 2002; Twumasii and Merem 2005; Zhao et al, 2005; Xu, 2007; AfiFy 2011; Devan et al, 2012; Xindong et al 2014; Hegazy and Kaloop, 2015; Sinha et al, 2016; İslam et al, 2017;; Sérgio and Mace, 2019; Ma et al, 2019; Jazouli et al, 2019)
The research based on Land use land cover in ecosystem changed was studied by several authors such as (Lambin et al, 2003; Balthazar et al, 2015; Paudyal et al, 2019) The Central African Republic (CAR) is a country located in the center of Africa
Summary
Land use/land cover change detection is considered to be the most effective remote sensing tool of the past to study the different phenomena related to the development of urbanization or the change of a region (Lambin, 1997). The research based on Land use land cover in ecosystem changed was studied by several authors such as (Lambin et al, 2003; Balthazar et al, 2015; Paudyal et al, 2019) The Central African Republic (CAR) is a country located in the center of Africa. This landlocked country has 16 provinces, the largest city is Bangui, capital of Central African Republic.The security instability that reigns in the country is considered as the cause of several mutinies and war. Because it should be noted that so far no scientific article has been made in this area on the CAR in general and the City of Bangui in particular, the need for this study
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