الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
1. Background
Soils are limited resource and could be renewable and cover most lands of the earth, (Blum, 2006). Cultivated land represents about 40 to 50 % of the earth (Scherr, 1999 and Davis and Masten, 2003), 20% of which are severely degraded (Scherr, 1999; Adams and Eswaran, 2000 and Davis and Masten, 2003). Over 95% of its arable area are irrigated lands. Only about 3% of Egypt arable land in, the Nile delta and the Nile valley, are suitable for intensive agriculture (Zeydan, 2005). The Nile Delta and the Nile Valley are the main contributors to food production, trading activities and national economy. The Nile Delta constits 63% of Egypt arable land (Abu Al-Izz, 1971 and Shehata, 2014) .
El-Gharbia governorate located in the center of the Nile Delta region of Egypt ,this governorate has human population nearly five million , representing 6% of the total population of Egypt. According to the Minister of Agriculture and land Reclamation (MALR,2006) , Gharbia was responsible of 17% of total broiler production in Egypt and has one of the highest densities of poultry in the country.
The ultimate aim of GIS is to provide vital information for the decision making process (Foote and Lynch, 1996). Both RS and GIS were used in many studies in Egypt for mapping land