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Woody Species Composition Structure Diversity Regeneration and Carbon Stock Fores Habru District Northern Ethiopia Implications of Managing Forsets for Biodiversity Conservation and Cilmate Change Mitigation

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dc.contributor.advisor Argaw Mekuria (PhD)
dc.contributor.author Teshager Zelalem
dc.date.accessioned 2018-07-11T06:02:31Z
dc.date.available 2018-07-11T06:02:31Z
dc.date.issued 2017-03
dc.identifier.uri http://etd.aau.edu.et/handle/123456789/7762
dc.description.abstract Climate change, caused by global warming, is the most pressing environmental problem of the world today and it is a phenomenon partly resulting from abundance of carbon dioxide in the atmosphere. The problem of increasing atmospheric carbon dioxide can be addressed in a number of ways. One of such actions is forestry development and forest management undertakings that can contribute to mitigation.This study was conducted in Weiramba Forest, with the objectives of estimating of the carbon stock and its variation along the environmental gradients, determining the composition, structure, regeneration status and diversity of the vegetation found in the area. A systematic sampling method was used to conduct the vegetation sampling. In order to collect vegetation data a total of 40 quadrats, each with the size of 10 m x 20 m at an interval of 100 m, were laid along the established transects at 200 m apart. For the assessment of seedling and sapling, two sub-quadrats each with the size of 2 m x 5 m were established at opposite sides of the main quadrat. For litter and soil sample collection, five sub-quadrats each with the size of 1 m x 1 m were established at four corners and center of every quadrat. Plant Species Diversity analysis was carried out by using Shannon Weiner index and Carbon stock was estimated by using allometric equations.The magnitude of the species diversity and carbon stock relationship was analysed by using Pearson’s correlation. Results revealed that the total mean carbon stock density of Weiramba Forest was 323.85 t/ha, of which 152.33 t/ha, 41.13 t/ha, 1.3 t/ha, 63.39 t/ha, 65.72 t/ha was contained in the above ground biomass, below ground biomass, litter biomass, soil (0-20 cm depth) and (21-40 cm depth), respectively. Altitudinal gradient, slope and aspect were the three environmental factors that affect the different carbon pools of the forest. A total of 32 species representing 28 genera and 20 families were recorded in the forest. The Shannon Weiner diversity index and evenness were resulted to be 2.30 and 0.66, respectively. The plant species diversity and carbon stock relationship was small or weak positive. The population structure revealed in diameter and height class frequency distribution was to be Bellshape with very high decrease towards the lower and higher diameter and height classes. The total basal area of the forest was 32.10 m2/ha. The population structure of woody plants and the regeneration status in the forest revealed that there is a need for conservation priority for species with poor regeneration status. From the point of view of managing forests for climate change mitigation and biodiversity conservation, the result suggested that the forest should be conserved and protected in a sustainable way for further carbon sinks and biodiversity conservation. Key words: Wiramba Forest, Environmental variables, Carbon stock, Diversity, Forest structure en_US
dc.language.iso en en_US
dc.publisher Addis Ababa University en_US
dc.subject Wiramba Forest en_US
dc.subject Environmental Variables en_US
dc.subject Carbon Stock en_US
dc.subject Diversity en_US
dc.subject Forest Structure en_US
dc.title Woody Species Composition Structure Diversity Regeneration and Carbon Stock Fores Habru District Northern Ethiopia Implications of Managing Forsets for Biodiversity Conservation and Cilmate Change Mitigation en_US
dc.type Thesis en_US


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