Potentials and Characteristics of Landsat Imagery in Relation to Land Use /Cover in Okitipupa Metropolis, Ondo State, Nigeria

Abstract

Landsat satellite imagery plays a crucial role in providing information on land use/cover modifications on local, regional, and global scales, especially where aerial photographs are missing. Monitoring land-use changes from past to present tends to be time-consuming especially when dealing with ground-truth information. Determining the past and current land-use change on Earth's surface using Landsat imagery tends to be effective and efficient when high-resolution imagery is unavailable. This study employed the use of Landsat satellite imagery to assess the past and present land use/cover using supervised classification and Normalized Difference Vegetation Index (NDVI). The result of the supervised classification land use/cover showed that forest cover and woodland undergo rapid loss, while farmland, wetland, built-up, and waterbodies tend to experience gradual loss. The NDVI demonstrated that farmland and forest cover was the most affected land use/cover. Hence, land use/cover of the study area is affected by human activities, such as intensive farming, population size, and deforestation.

Assessment of Heavy Metal Contamination in Wetlands Soils Around an Industrial Area Using Combined GIS-Based Pollution Indices and Remote Sensing Techniques

“…The EVI and NDVI (ranging from 1 to –1) applied in this study depicts an indices capable to monitor the annual vegetation changes. In addition, the absorptive and reflective feature of the EVI and NDVI has helped to better reflect the different vegetative cover of the studied area through the electromagnetic spectrum-bands (A. O. Tobore et al, 2019).…”

“…In addition, the absorptive and reflective feature of the EVI and NDVI has helped to better reflect the different vegetative cover of the studied area through the electromagnetic spectrum-bands (A. O. Tobore et al, 2019). In addition, the absorption of the chlorophyll-red light and infrared radiation through the mesophyll of the vegetative cover makes it easy to assess the conditions of vegetation cover of the area (Halabisky et al, 2016).…”