The Environmental Impact of Gully Erosion and Its Implications for Soil Loss in Northern Adamawa state, Nigeria

Abstract

Gully erosion has become a significant environmental issue, dramatically contributing to soil degradation and adversely affecting soil fertility, water quality, and ecosystem health worldwide. This study investigates the extent and impact of gully erosion in Northern Adamawa State, Nigeria, focusing on five local government areas comprising Madagali, Michika, Mubi North, Mubi South and Maiha Local Government where 163 gully sites were identified. Using a 30- meter measuring tape, the dimensions of each gully were recorded, resulting in a total gully length of 12,349.4 meters. The Field Office Technical Guide (FOTG) methodology was applied to calculate the volume of displaced soil, which was found to be 73,133.15 cubic meters. Furthermore, the study estimated an annual soil loss of approximately 58,471.05 tonnes. These results highlight the severe implications of gully erosion, such as significant soil fertility loss, decreased agricultural productivity, damage to infrastructure, and negative socio-economic impacts. The study underscores the urgent need for comprehensive soil conservation and land management strategies, including reforestation, terracing, and community engagement, to mitigate these adverse effects and restore environmental stability.