Exploring Methodologies for Assessing Land Degradation: A Comprehensive Review with Insights from Namibia

Abstract

Land degradation represents a significant global environmental challenge, posing threats to ecosystem integrity, food security, and sustainable development. In this comprehensive review, we examine the methodologies employed for assessing land degradation, drawing insights from studies conducted in various regions, with a particular focus on Namibia. The study conducted a systematic literature search to gather information on land degradation assessment methods applied, 159 publications were reviewed. Utilizing the Mann-Kendall trend test, the study discerns notable trends in the publication landscape, providing valuable insights into the evolving research trajectories within this field. A prominent finding of this review is the dominance of remote sensing as the primary method utilized for assessing land degradation. In conclusion, this review underscores the imperative for future research endeavours to prioritize an in-depth exploration of land degradation processes, mechanisms, impacts as well as advocates for the adoption of innovative technologies and monitoring methods, the advancement of theoretical frameworks, and the promotion of multidisciplinary integrated system research. By embracing these recommendations, stakeholders can effectively address the multifaceted challenges posed by land degradation and advance towards sustainable land management practices.