Soil Texture and Vegetation Cover Assessment in Three Sites in the Eastern Nile Locality, Khartoum State, Sudan

Sumeia Yousif Adam, Eltayeb Elhag Ali Ahmed

Abstract


The study was undertaken in the semi-desert area east of the Nile in Khartoum State with the objective of determining soil texture and assessing vegetation cover in three sites: Algaili, Alsileit and Eilafoon. Each site was further divided into three locations according to the land topography observed in the area: wadis descending from the Butana area carrying rainwater towards the Nile, low ground and high ground with rocky outcrops. Vegetation measurements and soil analysis were carried out on samples from quadrates randomly distributed along a transect traversing each location. Vegetation cover measurements included: % cover and types of plants, while soil analysis included determination of texture and moisture content. Results showed that the highest clay and silt contents (34.9% and 16.4% respectively) were found in Alsileit area which had more wadis and water courses compared to the other two areas. The highest mean sand content was found in Algaili and Eilafoon areas (65.6% and 66.2% respectively) compared to Alsileit. Soil moisture content was very low in the study area ranging between 2.6% and 4.3% recorded at Algaili and Eilafoon areas, respectively. The study area was, generally, poor in vegetation cover, which ranged between 7.4% and 27.6% recorded for Algaili and Eilafoon areas, respectively. In general, most of the available vegetation was concentrated in wadis and water courses with few scattered trees and herbaceous plants in other elevations. The most dominant type of vegetation was trees of which Acacia species were the most abundant. Of the herbaceous plants, Panicum turgidum was dominant in the driest parts and may prove useful in combating desertification.

Keywords


Soil texture;soil moisture;vegetation cover

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