Agroforestry Contribution to Native Woody Species Conservation, Carbon Sequestration, and Livelihood Benefits in Ethiopia: A Systematic Review

Abstract

The conservation of endangered native species and climate change are currently the two most pressing environmental problems on the planet. Therefore, the general objective of the review was to synthesize evidence of the contributions of agroforestry systems to the conservation of native species, carbon sequestration, and livelihood benefits in Ethiopia. A total of 104 publications from 2000 to 2024 publication years were used to provide available evidence and research gaps on agroforestry contribution to native species conservation (n=21), carbon sequestration (n=33), and livelihood benefits (n=35) in Ethiopia. Furthermore, 38 papers from other parts of the world were used to support ideas and relevant evidence linked to the title. The review’s findings confirm that agroforestry can serve as in-situ conservation for endangered native species including Cordia africana Lam., Hagenia abyssinica (Bruce) J.F. Gmel., Acacia abyssinica Hochst. ex Benth, Croton macrostachyus Hochst. ex Delile, Ficus sur Forssk and Faidherbia albida (Delile) A. Chev. The review systematic review indicated that agroforestry systems store an average of 40.04 ± 10.4 Mg C ha −1 in biomass and 68.9 ± 9.9 Mg C ha−1 in soil in Ethiopia. Hence, the above-ground carbon was highest for coffee-based agroforestry (17.12 ± 6.3 Mg ha−1) followed by homegarden (16.6 ± 3.2 3 Mg ha−1) and woodlot (7.1 ± 1.09 Mg ha−1). Fuelwood, food, fodder, income, timber, fruits, and poles for construction were the main benefits of livelihood; which have been reported in 37, 30, 26, 25, 23, and 20,18 published articles, respectively. Empirical studies show that an agroforestry system, which can significantly reduce the vulnerabilities of households and store a large amount of carbon dioxide in the atmosphere, is an important strategy for climate adaptation and mitigation. Moreover, further scientific research on agroforestry on the sustainability of agroforestry is needed from responsible bodies in Ethiopia.

Keywords

• agroforestry
• biodiversity conservation
• carbon sequestration
• native species
• sustainable livelihoods