Effect of exclosure on dryland woody species restoration in northeastern Amhara,Ethiopia  

作　　者：Mubarek Eshetie Tsegaye Gobezie Seid Muhie Dawd 

机构地区：[1]Sekota Dryland Agricultural Research Center,P.O.Box 62,Sekota,Ethiopia [2]Department of Forestry,College of Agriculture,Wollo University,P.O.Box 1145,Dessie,Ethiopia

出　　处：《Journal of Forestry Research》2021年第5期1953-1961,共9页林业研究（英文版）

基　　金：supported financially by the the Sekota Dry Land Agricultural Research Center/Amhara Region Agricultural Research Institute(ARARI)。

摘　　要：In Ethiopia,among many restoration efforts to reverse deforestation and land degradation,area exclosure is one of the most common practices to restore secondary forests with assisted natural regeneration.The present study in the S ekota district,northeastern Amhara region,Ethiopia evaluated the influence of areas exclosures on woody species diversity,population structure and regeneration status.A total of 36 and 27 quadrats,each 20 m×20 m,were used to collect data in exclosures and non-exclosures,respectively.Within quadrats,four 5 m×5 m and 2 m×2 m quadrats at the corners were used to sample saplings and seedlings,respectively.In exclosures,35 woody species representing21 families and 29 genera were recorded;19 woody species representing 13 families and 13 genera were recorded in the non-exclosure.Acacia etbaica was the most dominant species in the two land-uses.The Shannon diversity index was1.77±0.46 in exclosures and 1.39±0.46 in non-exclosures.Shannon and Simpson diversity indices showed a significant difference between the two land-uses(p<0.01).The regeneration status of all wood species in exclosures was good,only fair in non-exclosures.Area exclosures have thus played a great role in the restoration of degraded lands by improving vegetation diversity and regeneration status.The least dominant woody species should be maintained through active restoration.Continuous follow-up,maintenance of soil water conservation structure to improve soil fertility will further help enhance the woody species diversity and abundance.

关 键 词：RESTORATION DIVERSITY Regeneration status EXCLOSURE 

分 类 号：Q948[生物学—植物学]