Advanced Journal of Environmental Science and Technology

Advanced Journal of Environmental Science and Technology ISSN 7675-1686 Vol. 1 (3), pp. 001-011, December, 2010. © International Scholars Journals

Full Length Research Paper

Application of remote sensing and GIS inland use/land cover mapping and change detection in a part of south western Nigeria

Daniel Ayalew Mengistu1 and Ayobami T. Salami2*

1Department of Geography, Bahir Dar University, Bahir Dar, Ethiopia.

2Space Applications and Environmental Science Laboratory, Institute of Ecology and Environmental Studies, Obafemi Awolowo University, Ile-Ife, Nigeria.

Accepted 24 September, 2010

Abstract

Mapping land use/land cover (LULC) and change detection using remote sensing and GIS techniques is an area of interest that has been attracting increasing attention. This paper is an attempt to assess the changes in land use/land cover in some parts of south-western Nigeria over a 16 year period. The study made use of LandSat imageries of 1986 and 2002. The images were classified using Maximum Likelihood classification method. The results show that disturbed/degraded forest constituted the most extensive type of land use/land cover in the study area. The increasing population and economic activities were noted to be putting pressure on the available land resources. This paper highlights the importance of remote sensing and GIS techniques in apprehending the situation in south-western Nigeria.

Key words: LULC, conversion, modification, forest reserve, change detection, classification scheme, encroach-ment.