GEOMORPHOLOGICAL UNITS AND LANDCOVER MAP OF WADI EL-NATRUN AREA USING REMOTE SENSING AND GIS TECHNIQUES, WESTERN DESERT, EGYPT | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 8, Volume 23, Issue 2, July 2009, Page 81-93 PDF (576.29 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2009.197063 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| M. M. Ismail; M.K. Abdel Gaffar; M.A. Azzam | ||||
| Soils, Water & Environment Research Institute, ARC, Giza, Egypt | ||||
| Abstract | ||||
| Wadi EL-Natrun area is one of the promising areas in the Western Desert for reclamation and utilization due to its location and the presence of ground water in a suitable quality for irrigation. It is located in the northeast corner of the Western Desert between longitudes 30o 00\ and 30o 30\ East and latitudes 30o 15' and 30o 30' North. Wadi El-Natrun is a morphotectonic depression, having the lowest portion at its center (-23 m ASL) with gradual increase elevation towards the outer margins of the depression. The geomorphological characteristics of Wadi El-Natrun depression and their surrounding lands were studied using the remote sensing (RS) and geographic information system (GIS) techniques. Landsat ETM+ image (2006), Triangulated Irregular Network (TIN map), Digital Elevation Model (DEM map), geological map and data verification by in situ observation were used for delineating the main geomorphologic units. The study area (acreage 135890 hectares) could be divided into four main regions; namely hills (foot slope and table land), Wadi terraces, Wadi depression (Aeolian deposits, alluvium deposits hectares and lakes & sabkhas) and alluvial plain. Each of these regions showed distinct geomorphological features. Landcover classes were typically mapped from digital remotely sensed data through the process of supervised digital image classification. The study area was classified into five main classes with specific spectral signature for each class as follows: cultivated land (27040 hectares), bare soil and high land (98048 hectares), sand sheet (5164 hectares), urban (4838 hectares) and lakes & sabkhas (938 hectares). Descriptions of these landcover classes are presented | ||||
| Keywords | ||||
| Wadi El-Natrun; geomorphological units; landcover map Remote sensing (RS) and geographic information system (GIS) | ||||
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