Abstract
This study investigates the role of invasive plant species in exacerbating soil erosion and the resulting effects on livelihoods in Mubi North and Mubi South Local Government Areas (LGAs), Adamawa State, Nigeria. Using a mixed-methods that integrates field surveys, soil sampling, GIS analysis, and household questionnaires, we identified key invasive species (Parthenium hysterophorus, Chromolaena odorata, Lantana camara, Calotropis procera) and their distribution in erosion-prone areas. Results showed a strong association between invasive species dominance and severe soil erosion, particularly in Vimtim, Muchalla, Gella, and Digil. These biotic invasions degraded soil structure and displaced erosion-resistant native vegetation, leading to reduced agricultural productivity and increased livelihood vulnerability. The study calls for integrated invasive species management, participatory land rehabilitation, and policy-driven conservation strategies.