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- W2184793059 abstract "CT Several interventions have been tried to tackle environmental degradation in Tigray, Northern Ethiopia. One of which is the establishment of closed areas. Establishing closed areas is a method, by which an area is protected from human and livestock interference. This methodology of environmental improvement appears to be successful, but no substantive investigation has been attempted to quantify the improvement. This study tries to analyze the improvement of the vegetation in the degraded sites of a Juniper-Olea afromontane forest. This was achieved by comparing the vegetation of different aged closed areas, of 25 years, 5 years, a grazing land, and an ancient forest that has not been disturbed for at least 500 years. To achieve the intended objective, samples of 0.16 ha were taken from the above four sites. In these samples the number of trees, shrubs, grasses and herbs was counted, and their species was identified. From the information collected the species composition, abundance, dominance and frequency of trees was computed based on Lamprecht (1990). Moreover, species similarity indices were calculated using Weidelt’s 1968 method. Finally species area curves were drawn for trees, saplings and shrubs, seedlings, and herbs and grasses following Lamprecht (1990). Based on these, the natural progress of development can be determined. It appears that the ancient forest is now in a degraded state. Both closed areas and the grazing land have very different species compositions as compared to the forest. Moreover, all land use types show very few tree seedlings, indicating a future problem in the development of the closed areas into a forest. The lack of seedlings in the ancient forest is also an indication that the forest has problems in regeneration. It is clear that intensive forestry and silvicultural activities are needed to managing and improving the productivity of the closed areas in such a way, that the conservation of biodiversity, environmental sustainability, and the demands of the local people can be met." @default.
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- W2184793059 date "2002-01-01" @default.
- W2184793059 modified "2023-09-27" @default.
- W2184793059 title "Comparison of Vegetation Development of Closed Areas and ancient Forest in Tigray, Ethiopia." @default.
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