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ARPN Journal of Science and Technology >> Volume 7, Issue 1, January 2017

ARPN Journal of Science and Technology


Evaluating the Impact of Refugees on Natural Forests at Semi-Arid Lands, using Remote Sensing- Um Rakuba Camp-Gedaref State

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Author Ismail Mohamed Fangama
ISSN 2225-7217
On Pages 397-403
Volume No. 4
Issue No. 7
Issue Date August 01, 2014
Publishing Date August 01, 2014
Keywords Cover, density, reception, refugees, satellite



Abstract

Geraref State is an important area for Ethiopian and Eritrean refugees, because of proximity and availability of security, food and different natural resources. The influx of refugees was high during the previous forty years. Approximately the number of refugees at Um Rakuba camp reached 49000 persons from different tribes. The camp located in Elglabat province, Gedaref State. It lies on Latitude 13 29 N and longitude 35 40 E. The objective of the study is to assess the impact of refugees on natural forest in the area where their activities are concentrated. Different methods were used such as point-centered quartered method (PCQ). This method was used for measuring the density of trees per hectare in the demarcated area. Also satellite imagery covering the area of 30 October 1987 was used and carefully studied. The image was introduced to computer for processing, enhancing, analysis and classification. The results give good comparison between the changes of natural forest that has been placed over the years in forms of percentage and area in ha. The results show that the rate of change in degradation of natural forests is very cleared after the settlement of refugees at Um Rakuba. The results show that the density of trees is 46 trees/ha. This means that the number of trees in the total area demarcated for research is equal to 46x 4041ha=185886trees.If this number of trees divided by720 trees/ha (Tom, 2004) gives the equivalent of 258.2ha from the total area occupied by trees which is equal 6.4% of the total area in 2006. In 1987 the area occupied by trees was577.8 ha which is equal 14.3% of the total area. The results explained that, there is grading deterioration in the natural forest around Um Rakuba camp.


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