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      Woody species diversity, population structure, and regeneration status in the Gra-Kahsu natural vegetation, southern Tigray of Ethiopia

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      a , , b , c

      Heliyon

      Elsevier

      Ecology, Environmental science

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          Abstract

          The study was conducted at Gra-Kahsu protected natural vegetation (PNV) and communal grazing land (CGL), in order to evaluate the conservation impact level. The diversity of plant species, population structure of woody species, and regeneration status were analysed from 62 quadrats, each with 20 m × 20 m for trees and 5 m × 5 m for shrubs, using systematic sampling methods. A total of 64 vascular plant species belonging to 52 genera and 37 families from PNV and 43 plant species belonging to 34 genera and 25 families from CGL was identified. Shannon diversity index values of PNV and CGL were 2.29 and 1.84, respectively. The mean basal area of PNV and CGL were 8.29 and 5.32 m 2/ha, respectively. Three community types from PNV and two from CGL were identified. The population structure of woody species based on diameter and height class distribution showed reflected reversed J-shape for PNV however, bell-shaped, and interrupted inverted J-shape for CGL. The regeneration status of PNV and CGL were considered as good (sapling > seedling > matures) and fair (mature > sapling > seedling), respectively. Therefore, the floristic analysis of these two adjacent land use systems located in similar landscape showed distinctive variation in floristic composition, diversity, and regeneration status, which could be taken as the best practice of restoration and rehabilitation programs like, area exclosure.

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          Most cited references 35

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          The role of enclosures in the recovery of woody vegetation in degraded dryland hillsides of central and northern Ethiopia

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            New Perspectives on Sustainable Grazing Management in Arid Zones of Sub-Saharan Africa

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              Restoration of Ecosystem Carbon Stocks Following Exclosure Establishment in Communal Grazing Lands in Tigray, Ethiopia

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                Author and article information

                Contributors
                Journal
                Heliyon
                Heliyon
                Heliyon
                Elsevier
                2405-8440
                07 January 2019
                January 2019
                07 January 2019
                : 5
                : 1
                Affiliations
                [a ]Tigray Agricultural Research Institute, Alamata Agriculture Research Centre, Alamata, Ethiopia
                [b ]School of Biological Sciences and Biotechnology, Collage of Natural and Computational Sciences, Haramaya University, Ethiopia
                [c ]Collage of Agriculture and Environmental Sciences, Haramaya University, Ethiopia
                Author notes
                []Corresponding author. atsbhatesfay@ 123456gmail.com
                Article
                S2405-8440(18)35320-9 e01120
                10.1016/j.heliyon.2019.e01120
                6325083
                © 2019 Published by Elsevier Ltd.

                This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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                ecology, environmental science

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