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University of Khartoum (2008)

Inventory of Tree Cover in Sharg El Neel locality, Khartoum State

Ahmed Jubara Dawe, Afaf

Titre : Inventory of Tree Cover in Sharg El Neel locality, Khartoum State

Auteur : Ahmed Jubara Dawe, Afaf

Université de soutenance : University of Khartoum

Grade : Master of Science (MS) 2008

Inventory of Tree Cover in Sharg El Neel Locality, Khartoum State This study was under-taken to evaluate the Afforestation activities in Khartoum State which has been seriously affected by desertification. East Nile Locality was selected as the study area and several parts were surveyed : Ailafoon, Elhaj Yousif, Umdawanban, Kutrang and Keriab. Sampling was done in the three chosen categories namely forest, residential and farms. In each sample, trees and/ or shrubs were identified and enumerated ; ten trees were randomly selected for each of the dominant tree species for determining crown projection as a measure of tree cover. The main variables presented were : Tree species, Tree density, Crown projection and Frequency. In the residential sites, square sample plots with an area of approximately 0.1 ha were used. Altogether 150 sample plots were laid down at the following locations : Ailafoon, Elhaj Yousif, Umdawanban, Kutrang and Keriab villages. The study showed the following species as most frequent : Acacia tortilis subspp tortilis, Accia tortilis sub-species radiana, Acacia ehrenbergiana, Azadirachta indica, Albizia lebbeck and Phoenix dactylifera. Acacia tortilis subspecies tortilis were more common in forest sites, while Azadirachta indica was more common in the residential areas. Overall, 53 tree and shrub species were encountered. The number of species in the residential areas was far greeter than in the forest areas, because they included a lot of horticulture and ornamental species. Density of trees ranged between 54 and 427 per ha in forest sites ie 189± 3 which is very low. IV In forest sites, the highest species density was shown by Acacia tortilis subsp tortilis. In residential areas, the highest density was shown by Albizia lebbeck followed by Azadirachta indica. It is concluded that afforestation activities are very meager in East Nile locality. Real plantations were established in two private farms representing only 2% of the farm area. More afforestation/reforestation is needed to counter- act the deficiency in forest cover.


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