The report reviews the regional level data on the economic costs of soil erosion related to land degradation. It also analyzes the limitations and challenges of using such data and the discrepancies emerging from various methodologies. It also delves into the methodological approach utilized for regional level estimates and the cost-benefit analysis of taking action against soil erosion-induced nutrient losses on arable lands used for cereal production, which is one aspect of land degradation. This is done by using an econometric modeling approach that estimates the costs of inaction, costs of action and the net benefits of action against erosion-induced soil nutrient depletion using national level economic and biophysical data. It focuses on the regional estimates for Africa and a cost-benefit analysis of soil nutrient inflows versus soil nutrient outflows, or what is considered the overall soil nutrient balance.
