inable forest management. This study was carried out to evaluate woody species diversity and their regeneration status of Adey Amba enclosed forest in the North Western highlands of Ethiopia. Both primary and secondary data were collected for the study. A systematic sampling method was used as a design to collect vegetation data from a total of 36 quadrants (20 m x 20 m) at an interval of 100 m laid along four transect lines. Within each quadrant, vegetation data such as seedlings and saplings were directly counted and all woody tree species with DBH ~ 2.5 cm and heights> 5 m were measured. Shannon-Wiener and Simpson's diversity index were applied to quantify species diversity, richness and evenness. The regeneration status of woody plant species of the enclosure was also compared within the adjacent open site to assess changes of the enclosure in species diversity. In addition a socio-economic survey was conducted by interview using structured questionnaires and focal group discussion. The local community has benefited from the enclosure in the form of forage for livestock and farmland protection from erosion. This has developed positive attitude by the local community towards enclosure development. The collected data were analyzed by descriptive statistics. The result showed that a total of 56 woody plant species were recorded that were grouped in 27 families. Among these the family Fabaceae was found dominant with 12 species followed by Euphorbiaceae (5 species). The density of tree species .,_id the enclosure decreases with incr~asing height and DBH classes. Therefore, the .,..,enclo~ure is characterized by high density of trees in the lower class than in the higher indicating th~ dominance of small and medium sized individuals. Woody species densities for mature individuals were 442 stems /ha, 4,657 stems /ha for saplings 10,374 stems I ha for seedlings. The basal area of the forest was 21.213 m2 /ha. The regeneration status of woody species of the enclosure was evaluated based on the number 'of seedlings and sapling per hectare and population structure. Generally, there were more seedlings than saplings which could indicate both the intervention of humans and browsing animals and their early stage of development. Based on the results of the current study, some woody species lacked both seedlings and sapling . ..... Wondie Mebrat (BED) at Jigjig University \ By ABSTRACT in the enclosure. The population structure and their regeneration behavior in the enclosure revealed that there is a need for conservation priority for woody plant species with poor regeneration status. The study area therefore, needs immediate intervention and management for effective regeneration and rehabilitation of the degraded forest