Environmental Sensitivity Index Mapping: A Case Study of PPMC Pipeline along Ugbomro Community and Environ, Delta State, Nigeria

Christopher Onosemuode, Okhae S.E., Gbemisola Okeowo, (doi: 10.23953/cloud.ijarsg.395)

Abstract


Environmental Sensitivity Index (ESI) mapping provide a concise summary of coastal/inland resources that are at risk if an oil spill occurs nearby. Environmental sensitivity index (ESI) maps can be used for oil spill contingency planning, environment management planning and emergency response. To this end, the study attempts to establish the inland habitats and their sensitivity to oil spill along the 4.95km of the pipeline passing through Ugbomro community and as it relates to its environs. Ikonos image of the area obtained from Google Earth, were digitized manually and the land use/land cover map of the areas were derived using ArcGIS 10.1. The ESI classification and ranking was done for the inland habitat by considering the importance of indigenous flora/fauna species to rural livelihood, oil ecosystem interaction, and ease of clean up. The result suggests that built up area, water body and wetland having ESI ranking to be Very High and ESI classification of 5A, 5B and 5C respectively. Farmland ESI ranks High with ESI classification of 4, Semi natural vegetation has ESI ranking of Medium with ESI classification of 2 and bare surfaces had ESI ranking to be Low and ESI classified as 1. An emergency response zone and priority booming were proposed along the pipeline route as a means of curtailing the spread of oils to sensitive resources.


Keywords


ESI; Emergency; Oil spill; Pipeline; Risk; Zone

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