PAPER TITLE :CHANGE DETECTION ANALYSIS OF LAND USE LAND COVER CHANGES OF SHASHA FOREST RESERVE, OSUN STATE, NIGERIA USING GEOSPATIAL TECHNOLOGY.

APPLIED TROPICAL AGRICULTURE | VOLUME 25 NUMBER 1 2020

Paper Details

  • Author(s) : Abiola-Olagunju, O. Mako, A. A. and Akinsoyinu, A.
  • Abstract:

 While land cover embraces the quantity and type of surface vegetation, water and earth materials, land use can be in form of grazing, agriculture, urban/rural development, logging, and mining among others. These activities mostly result in deforestation, particularly when there is over-exploitation. This paper analyzed the effect of land cover change on vegetation indices in Shasha Forest Reserve, Nigeria between 1984 and 2002 in order to detect the changes that had taken place within the period. The trend was studied using Landsat imageries acquired in 1984, 1991 and 2002; these were subjected to image processing using the same classification scheme in Idrisi 17.1 and ArcGIS 10.1 environment. A comprehensive map of the Forest Reserve was generated to show the array of changes in land cover and vegetation indices, quantity of change between 1991 and 2002. Differences in the values obtained from the three sets of imageries were converted to percentages. It was observed that there were five land cover classes. Over the study period, the Normalized Difference Vegetation Index (NDVI) reduced from +0.36 to +0.14 in 1984 to +0.14 to -0.22 in 2002, implying reduction in greenness of the forest reserve over the years. This study further affirmed the contribution of remote sensing and GIS in the monitoring and proper utilization of forest reserves for sustainable development and forest resources management.

Keywords: Land use, Vegetation index, GIS, Sustainable development, Shasha Forest Reserve, Nigeria.