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\hypersetup{pdftitle={Assessment and Mapping of Desertification at Khor Abu Habil Area Based on Remote Sensing GIS Techniques},pdfauthor={Mohamed Eltom Elhaja, Mustafa Mohammed El Hag, Ismail Ahmed Fadl Elkerim},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Assessment and Mapping of Desertification, Khor Abu Habil , Remote Sensing GIS Techniques},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
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\Large{\textbf{Assessment and Mapping of Desertification at Khor Abu Habil Area Based on Remote Sensing GIS Techniques\footnote{\textbf{Contact Address:} Mohamed Eltom Elhaja, University of Khartoum, Soil and Environment Sciences, Khartoum, Sudan, \mbox{e-mail}: \email{elhaja75@yahoo.com}}\\[0.8ex]}}
\normalsize{\textsc{Mohamed Eltom Elhaja$^{1}$, Mustafa Mohammed El Hag$^{2}$, Ismail Ahmed Fadl Elkerim$^{3}$}}
\end{center}
\begin{itemize*}
\item[]{\small{\textit{$^{1}$University of Khartoum, Soil and Environment Sciences, Sudan}}}
\item[]{\small{\textit{$^{2}$National Research Center, Sudan, Soil, }}}
\item[]{\small{\textit{$^{3}$Faculty of Natural Resources and Environmental Studies (FNATRES) University of Kordofan, Gamma Street, Elobeid, Sudan, Soil and Water Sciences, }}}
\end{itemize*}
\index[author]{Elhaja, Mohamed Eltom}
\index[author]{El Hag, Mustafa Mohammed}
\index[author]{Fadl Elkerim, Ismail Ahmed}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
It is well accepted that the present concern about desertification has been a result of the social, political and environmental impact of the repeated droughts that have occurred in the Sahil part of the Africa. This impact has generated the World"=wide interest in desertification. Sudan is one of the Afro-Sahelian countries that are seriously affected by Desertification. Within Sudan, Kordofan is one of the states that suffer most. This present study was undertaken to examine the status and rate of desertification In Khor Abu Habil area, in the central part of Kordofan using remote sensing and GIS techniques for the period 1986--2008.  For this purpose three satellite imageries (TM 1986, ETM+ 2000 and ETM+ 2008) were used in addition to field survey for ground control point collection. The pre"=processing and classification methods were done for the imageries. The Evaluation and the interpreted data were performed based on the FAO/ UNEP Provisional Methodology for Assessment and Mapping of Desertification, (1984). The result revealed that the study area is mainly dominated by two desertification processes: vegetation degradation and wind erosion. Also the result showed that the Qoz (dune) and sandy plains areas are suffering from severe to very severe desertification, while the clay plains and alluvial soils area are having slight to moderate desertification. The rate of desertification is moderate to slight in most of the study area. The percentage of the affected area ranges from \mbox{100\,\%} in Qoz areas to \mbox{8\,\%} in the clay plains area. The study concluded that the over exploitation of the Qoz lands and sandy plains area, led to denuded the lands from its natural vegetation, combined with the erodible of sandy soils texture, Which was reflected in a high desertification hazard in the study area.}

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\noindent \textbf{Keywords:} Assessment and Mapping of Desertification, Khor Abu Habil , Remote Sensing GIS Techniques
\index[key]{Assessment and Mapping of Desertification}
\index[key]{Khor Abu Habil }
\index[key]{Remote Sensing GIS Techniques}
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