International audienceThe authors deal with the best way to tackle the problem of mutations that affect Saharan spaces (environmental, economics) and their consequences on different scales. The final objective of this paper is to propose theoretical and more operational elements about the observation of those mutations (modeling, indicators) regarding heterogeneity and specificities of these territories. An observation structure of those territories (by territory we consider geographical space and actors) could permit to increase knowledge and support dialogue between Land settlement actors and researchers. Those reflections become integrated in Algerian government's will to develop "the best synergies for the development", by increasing "good governance" and participation (National Scheme of Land Planning)
