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Ukah, Chinomso
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THE EFFECTS OF URBAN EXPANSION ON LIVELIHOOD ASSETS IN OYI LOCAL GOVERNMENT AREA OF ANAMBRA STATE Ikeanyionwu, Uchechukwu Jacinta; Okoye, Chinedu Oguejiofo; Ukah, Chinomso
SciencePlus Vol. 1 No. 1 (2025): SciencePlus
Publisher : Barkah Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.2025/sp.v1i1.257

Abstract

Rapid urbanization in Oyi LGA, driven by population growth due to proximity to Onitsha and the emergence of major markets, is causing significant socioeconomic and environmental challenges and has driven the purpose of this work. This study assessed the effects of urban expansion on people’s livelihood assets in the Oyi Local Government Area of Anambra State. The study's objectives were to assess how urban expansion has affected the different capitals of livelihood. The study employed a survey design and primary data was collected using a structured questionnaire. A total of 391 households were used for the study. Findings indicate that urban expansion has positively influenced human, financial, and physical capital, and significant negative impacts were observed on natural capital and social capital. The research highlights the need for balanced urban development strategies that enhance economic opportunities while mitigating environmental degradation and preserving social fabric. Hence the study recommended that the relevant authorities enforce environmental impact assessments, invest in community-based initiatives to strengthen social cohesion, and establish transparent, participatory urban planning processes.
Soil Erosion Risk Assessment Using Remote Sensing and GIS: An Integrated RUSLE-Frequency Approach Ukah, Chinomso; Adieme, Mmelichukwu Oluebube; Ojukwu, Prosper Chinonso; Ebere, Nwobu Deborah; Udeh, Jennifer Ifeoma
Scientific Journal of Engineering Research Vol. 2 No. 1 (2026): March
Publisher : PT. Teknologi Futuristik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64539/sjer.v2i1.2026.379

Abstract

Soil erosion is a major environmental challenge in tropical regions due to the interaction of intense rainfall, fragile soils, and unsustainable land use. This study assessed soil erosion risk in Agulu-Nanka, southeastern Nigeria, using an integrated GIS, remote sensing, Revised Universal Soil Loss Equation, and Frequency Ratio modeling approach to identify erosion hotspots and validate erosion susceptibility factors. It addresses the lack of localized, high-resolution soil erosion mapping and model validation using observed field erosion features in the study area despite existing regional erosion studies in Anambra State. Multi-source datasets were used to derive Revised Universal Soil Loss Equation factors and produce high-resolution erosion risk maps, which were validated using gully occurrence data. Results indicate extremely high rainfall erosivity (mean R = 110,562.09 MJ-MM/ha-hr-yr) and moderately to highly erodible soils (mean K = 1.39) as key erosion drivers. Steep slopes (LS > 4.00) more than doubled gully occurrence likelihood (FR = 2.21), while poorly vegetated and unmanaged areas recorded high susceptibility (FR > 2.0). Estimated soil loss reached 86.34 t/ha/yr, with high and very high-risk zones covering less than 4% of the area but posing significant threats to land productivity and infrastructure. The study confirms the multi-factorial nature of erosion in Agulu-Nanka and demonstrates the effectiveness of the RUSLE-FR framework for hotspot identification and evidence-based land use planning.
Co-Authors Adieme, Mmelichukwu Oluebube Ebere, Nwobu Deborah Ikeanyionwu, Uchechukwu Jacinta Ojukwu, Prosper Chinonso Okoye, Chinedu Oguejiofo Udeh, Jennifer Ifeoma