Perennial forage crops play a crucial role in sustaining agricultural ecosystems, particularly in barren lands where conventional crop cultivation may face challenges due to harsh conditions. These crops offer a sustainable solution for transforming unproductive land into a valuable resource, enhancing both agricultural and livestock production. The potential applications of perennial forage crops are diverse, contributing significantly to various aspects of agriculture production. They play a vital role in improving soil health by boosting nitrogen levels, especially when comprising perennial forage legumes. Additionally, they contribute to enhancing the soil microbiome, suppressing weeds, acting as barriers against soil erosion, and mitigating the presence of toxic compounds in the soil. Perennial forage crops also contribute to climate resilience through carbon sequestration, promote biodiversity management, and have socioeconomic implications. Despite their numerous benefits, the innovative techniques of genome analysis can be leveraged further to develop perennial forages with desirable traits. This approach aims to optimize the conditions of underutilized lands to their maximum potential. This chapter primarily focuses on the role of perennial forage crops in the restoration of barren lands from the perspectives of biodiversity and ecosystem enhancement.