الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
(In the last few decades, The area southeast of Lake Manzala has gained great interest from the Egyptian Government as a prime target for future development especially for agriculture. So, the government has constructed ElSalam canal that is planned to reclaim about 210,000 Feddans for agricultural development and new urban communities. Lake Manzala is one of the coastal lake systems of the northern Nile Delta. It is surrounded with great areas of wetlands cover the southeastern areas. In addition to, Wetlands considered as essential source of fishing and salt mining activities, it plays an important role natural vegetation of some plants, house to varieties of some wildlife species, nursery habitat for fish and geochemical cycling. Human activities including the fish farming, salt mining, agriculture and discharge of the sewage water into the lake have serious environmental problems for the lake and other natural resources of the study area. Sophisticated digital image processing techniques as enhancements and classifications were applied to help the identification of the different land cover features in the study area. In the present research, multitemporal data sets of TM satellite images, topographic maps and tabular data supported by field observation have been studied by the GIS functions and operations to evaluate, monitor and model the land use / land cover changes and environmental conditions. The area of interest has suffered rapidly changes especially since 1980. The area of inundated lands in 1986 data increased about twice it?s of 1952. These phenomena created from the dominant wide spread fish farming practices. While ElSalam Canal was constructed, the Manzala Lake area has shrunk, so, the water body lied in the study area decreased about 100 sq. km since 1952 till 1986. About 80% of South Husseinia Valley Site II (38,890 Feddans) are of Typic Salorthids soil subgroup that almost flat, dry lands having a salic horizon. The marked impacts of the human activities discussed through an advanced GIS model that built and analyzed the 1000 meters buffer zone around the major drains. The area in agricultural lands and fish farms increased from 1952 to 1986, where the main water source form the wastewater of drains. In addition to the worse impacts of drain water on the lake, it degraded the soil, groundwater and threatens the human. The decisionmakers should take into consideration the environmental balance while set plans for development of such this area. The natural resource of the study area should be conserved and proper managed