Role of remote sensing data in geoenvironmental mapping: (Case studies from Syria)

Abstract

Remote Sensing techniques play a pioneer role in this field, where space images have special characteristics and properties which are not found in the traditional methods, since wide and valuable information can be acquired about the geoenvironmental systems which adequately reflect the recent situation of the natural environment, and the impact of human activity effect. In comparison between old and recent remote sensing data, it is possible to study and determine the direction and intensity of the negative and positive processes which are related to both natural or human made factors and their impact on the environment, as well as the characteristics and extent of environment damage and pollution. We have carried out by these techniques. Geoenvironmental survey of the southern area of Syria on 1/100000 scale, with 10000squere km2 Preparing geoenvironmental maps that reflect the natural components of ecosystems and the impact of human activity, in addition to the effect of the geological factors and those of geochemical pollutants. Also it was preparing maps of geoenvironmental assessment of the study area. We had digital processing for Russian and land sat TM images which we used, by using IRDAS software, especially those related to natural anomalies determination. The work is completed through field actions, which are represented by the checking the result of space images interpretation, collecting more than 4000 samples of soil, plants, ground and surface water, bottom sediments, rocks, for analysis. The results reflected in geochemical pollution maps.