This research focuses on the mapping of spatial and temporal effects of flare on vegetation cover. The data (11 Landsat 5 TM, 49 Landsat 7 ETM+, 27 Landsat 8 OLI-TIRS, and 15 Landsat 9 OLI-TIRS) dated from 10/10/1984 to 17/12/2023 with < 3 % cloud cover was used to study 11 flaring sites in the Niger Delta. Data processing and analysis were carried out using MATLAB codes. Normalized Difference Vegetation Index (NDVI) for Landsat 5 and 7 bands (1-4) and Landsat 8 and 9 bands (2-5) was determined from the atmospherically corrected multispectral bands. The results show that the temporal in NDVI is specific to each site, and that the effect of the flares on the vegetation cover does not majorly depend on the size of facility. Eleme I (-2.71 × 10-5-2.32 × 10-5) and II (-1.740 × 10-4-2.074 × 10-5) presented significant results for a small portion of the area. Umurolu (-1.679 × 10-5-5.868 × 10-5) and Bonny (-3.089 × 10-5-2.423 × 10-5) show significant results for a wider area which could be because of the number of flare stacks within them 4 and 5 respectively. All small and medium facilities show statistically significant results which could be attributed to the rate and volume of gas burning from them. Therefore, it can be concluded that Landsat data can be used to map the spatial and temporal impacts of flare on vegetation cover in the Niger Delta.
The Author is grateful to the USGS for the provision of Landsat data. Many thanks to Jill Schwarz for MATLAB coding and guidance.
Primary Language | English |
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Subjects | Environmental Assessment and Monitoring |
Journal Section | Articles |
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Publication Date | |
Submission Date | October 15, 2024 |
Acceptance Date | March 5, 2025 |
Published in Issue | Year 2025 Volume: 20 Issue: 1 |
“Journal of International Environmental Application and Science”