University of Khartoum

Effect of Fencing on Plant Community in Nyala Area

Effect of Fencing on Plant Community in Nyala Area

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Title: Effect of Fencing on Plant Community in Nyala Area
Author: Adam, Asma Ibrahim Idam
Abstract: This study was carried out to determine the effect of protection on plant community in the study area, and to measure plant density, frequency, composition, ground cover and yield in both protected and unprotected sites. The study took place in Nyala Airport during the rainy seasons of 2004 and 2005. Nine plots of (50m×50m) were located randomly inside the fenced area and nine similar plots were taken in the unfenced area. Plant species were counted inside each plot (by taking the mean of three small quadrats (0.25 m²) which were located randomly inside each plot). Plant density, composition, frequency, ground cover and yield, were measured. It was found that there was a significant difference between the protected and unprotected sites with respect to plant density, ground cover and yield. The mean plant density,cover, and yield were much higher within the protected area than the unprotected one and they were ;( 300.mR54;²), (67%), and (1878 kg/ha) respectively within the protected area and (104.mR54;²), (28%) and (387kg/ha) respectively in the open site. On the other hand the results obtained showed that there was no significant difference between protected and unprotected area with respect to plant frequency, composition and soil properties. It was concluded that overgrazing was the main factor that negatively affected plant density, ground cover and yield in the unprotected area in addition to human misuse. There were common dominant species in both protected and unprotected sites and they were; Brachiaria xantholeuca(Abu jigra), Sporobolus marginatus(Ab malih), and Schoenefeldia gracilis(Danab al naga). Mean density of dominant species was (45%) of the total density in the protected area and (46%) in the unprotected area. Recommendations were oriented towards better use of rangeland, conservation and protection of native vegetation
URI: http://khartoumspace.uofk.edu/handle/123456789/13528
Date: 2015-06-17


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