Ojo, Aderemi Samuel (2021) IMPACT OF CLIMATE CHANGE ON LAND-USE AND LAND-COVER OF YEWA SOUTH LOCAL GOVERNMENT AREA, NIGERIA. ["eprint_fieldopt_thesis_type_phd" not defined] thesis, Covenant University Ota..
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Abstract
Agricultural products, which include farming and forestry, and raising livestock, are the main occupation of Yewa South Local Government of Ogun State in Nigeria which is the case in this study area. Climate change has been a significant threat to the study area. The burning of bush has given rise to an increase in greenhouse gas pollution in the atmosphere. The intensive use of land through dynamic human activities and climate changes has also affected the study area's agricultural product. It is necessary to understand the dynamic and climatic changes of the study area. It is on this basis, that this study was carried out to determining the effect of climate change on land use/land cover of the study area. The specific objective is to model the impact of the relationship between climate change and land use/land cover change (LULC) and predict for future planning of land use/land cover change of the study area. This study used multi-temporal data sets between 2000 and 2019 from LANDSAT-7 ETM+ and LANDSAT-8 OLI/TIRS, and climatic variables obtained from Ogun-Osun River Basin Development Authority. The general design and methods used in the study include image acquisition, image classification, and preparation of the thematic map. A supervised Parallelepiped classification scheme was used to classify the images into five different classes of LULC types. The classes are vegetation, wetland, waterbody, agricultural land and built-up. The study developed a multivariate regression model that established the relationship between climate data and (LULCC) that helped predict future planning of LULC of the study area. The LULC classification results revealed that the agricultural land use type was extensively used in the study area, with the percentage ranging from 33.82% (222.17km2) in 2000 to 66 56% (436.84km2) in 2011. The high value of yearly rainfall throughout the study period led to an increase in water resources' agricultural consumption. The growth rate of the built-up area between 2000 and 2019 snowballed, rising from 3.85% in 2000 to 10.33%, with actual areal expansion increasing from 25.28 km2. to 67.83 km2. The rapid increase in the population during the year of study also attributed to the expansion of farmland, where many farmers obtained land for large-scale agriculture, suggesting that farmland is the most predominant LULC category in the study area. The technique to predict LULC distribution for 2040 was successful, and the results were compared with the LULC from 2000 to 2019. The study also established that there are distinct changes in climate variability between the years 2000 and 2019, leading to changes in the land use/land cover of the study area. The statistical analysis result indicated that the climatic parameters have an accuracy of 84.12 % Prediction for land use/land cover classification. The projected LULC for 2040 revealed potential expansion in agriculture and growth in population. It is envisaged that the study will help improve the social-economic activities without further disintegrating the environment for planning, administration, and exploitation of lands in the Yewa South Local Government area of Ogun State, Nigeria.
| Item Type: | Thesis (["eprint_fieldopt_thesis_type_phd" not defined]) |
|---|---|
| Uncontrolled Keywords: | Land use, Land cover, Multivariate, Climate, Change detection |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment |
| Depositing User: | Mrs Patricia Nwokealisi |
| Date Deposited: | 07 Feb 2022 13:34 |
| Last Modified: | 07 Feb 2022 13:34 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/15607 |
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