SOIL SALINITY PERSPECTIVES, APPROACHES AND STRATEGIES

One of the main environmental problems which affect extensive areas in the world is soil salinity. Soil salinization is a problem associated with irrigation in arid and semi- arid environments; even more so when reclaimed water is applied. Traditional data collection methods are neither enough for considering this important environmental problem nor accurate for soil studies. Remote sensing data could overcome most of these problems. Although satellite images are commonly used for these studies, however there are still needs to find the best calibration between the data and real situations in each specified area. Soil survey delineation at a scale of 1:25000 and mapping of salinity phases at a regional scale could serve as the basis for improved decision making, or highlight areas for further investigation. Soil salinity survey at a regional scale remains a challenge. Therefore, study was to promote geospatial technology as a main source of mapping soil salinity at different scales and the factors, approaches involved in establish salinity hindering crop productivity.