干旱区生态环境知识资源中心

The map of desertification sensitivity is established by MEDALUS approach developed for the Mediterranean region on the basis on desertification sensitivity index, itself developed from several relevant factors known to influence the degradation processes (climate, vegetation, soil, human activities). The preparation of each layer is obtained from the geometric mean of the weighted parameters chosen to characterize and quantify this factor. Cartographic and alphanumeric data are captured and structured in a database, managed and analysed by a Geographic Information System. The output data have enabled the development of maps with small scale describing quality indexes. The maps about quality as well as the map of desertification sensitivity were analysed.